Use tablet_task_info fields for tablet task timing

For tablet_virtual_task, set creation_time to tablet_task_info::request_time
and start_time to tablet_task_info::sched_time, matching the actual semantics
of when the request was created vs when it was scheduled for execution.

Co-authored-by: Deexie <56607372+Deexie@users.noreply.github.com>

.github/CODEOWNERS

@@ -57,7 +57,6 @@ repair/* @tgrabiec @asias
 
 # SCHEMA MANAGEMENT
 db/schema_tables* @tgrabiec
-db/legacy_schema_migrator* @tgrabiec
 service/migration* @tgrabiec
 schema* @tgrabiec
 

alternator/executor.cc

@@ -2223,12 +2223,12 @@ void validate_value(const rjson::value& v, const char* caller) {
 
 // The put_or_delete_item class builds the mutations needed by the PutItem and
 // DeleteItem operations - either as stand-alone commands or part of a list
-// of commands in BatchWriteItems.
+// of commands in BatchWriteItem.
 // put_or_delete_item splits each operation into two stages: Constructing the
 // object parses and validates the user input (throwing exceptions if there
 // are input errors). Later, build() generates the actual mutation, with a
 // specified timestamp. This split is needed because of the peculiar needs of
-// BatchWriteItems and LWT. BatchWriteItems needs all parsing to happen before
+// BatchWriteItem and LWT. BatchWriteItem needs all parsing to happen before
 // any writing happens (if one of the commands has an error, none of the
 // writes should be done). LWT makes it impossible for the parse step to
 // generate "mutation" objects, because the timestamp still isn't known.
@@ -2739,7 +2739,7 @@ future<executor::request_return_type> rmw_operation::execute(service::storage_pr
     auto read_command = needs_read_before_write ?
             previous_item_read_command(proxy, schema(), _ck, selection) :
             nullptr;
-    return proxy.cas(schema(), std::move(*cas_shard), shared_from_this(), read_command, to_partition_ranges(*schema(), _pk),
+    return proxy.cas(schema(), std::move(*cas_shard), *this, read_command, to_partition_ranges(*schema(), _pk),
             {timeout, std::move(permit), client_state, trace_state},
             db::consistency_level::LOCAL_SERIAL, db::consistency_level::LOCAL_QUORUM, timeout, timeout, true, std::move(cdc_opts)).then([this, read_command, &wcu_total] (bool is_applied) mutable {
         if (!is_applied) {
@@ -3026,17 +3026,20 @@ struct primary_key_equal {
 };
 
 // This is a cas_request subclass for applying given put_or_delete_items to
-// one partition using LWT as part as BatchWriteItems. This is a write-only
+// one partition using LWT as part as BatchWriteItem. This is a write-only
 // operation, not needing the previous value of the item (the mutation to be
 // done is known prior to starting the operation). Nevertheless, we want to
 // do this mutation via LWT to ensure that it is serialized with other LWT
 // mutations to the same partition.
+// 
+// The std::vector<put_or_delete_item> must remain alive until the
+// storage_proxy::cas() future is resolved.
 class put_or_delete_item_cas_request : public service::cas_request {
     schema_ptr schema;
-    std::vector<put_or_delete_item> _mutation_builders;
+    const std::vector<put_or_delete_item>& _mutation_builders;
 public:
-    put_or_delete_item_cas_request(schema_ptr s, std::vector<put_or_delete_item>&& b) :
-        schema(std::move(s)), _mutation_builders(std::move(b)) { }
+    put_or_delete_item_cas_request(schema_ptr s, const std::vector<put_or_delete_item>& b) :
+        schema(std::move(s)), _mutation_builders(b) { }
     virtual ~put_or_delete_item_cas_request() = default;
     virtual std::optional<mutation> apply(foreign_ptr<lw_shared_ptr<query::result>> qr, const query::partition_slice& slice, api::timestamp_type ts, cdc::per_request_options& cdc_opts) override {
         std::optional<mutation> ret;
@@ -3052,20 +3055,21 @@ public:
     }
 };
 
-static future<> cas_write(service::storage_proxy& proxy, schema_ptr schema, service::cas_shard cas_shard, dht::decorated_key dk, std::vector<put_or_delete_item>&& mutation_builders,
+static future<> cas_write(service::storage_proxy& proxy, schema_ptr schema, service::cas_shard cas_shard, const dht::decorated_key& dk, const std::vector<put_or_delete_item>& mutation_builders,
         service::client_state& client_state, tracing::trace_state_ptr trace_state, service_permit permit) {
     auto timeout = executor::default_timeout();
-    auto op = seastar::make_shared<put_or_delete_item_cas_request>(schema, std::move(mutation_builders));
+    auto op = std::make_unique<put_or_delete_item_cas_request>(schema, mutation_builders);
+    auto* op_ptr = op.get();
     auto cdc_opts = cdc::per_request_options{
         .alternator = true,
         .alternator_streams_increased_compatibility =
                 schema->cdc_options().enabled() && proxy.data_dictionary().get_config().alternator_streams_increased_compatibility(),
     };
-    return proxy.cas(schema, std::move(cas_shard), op, nullptr, to_partition_ranges(dk),
+    return proxy.cas(schema, std::move(cas_shard), *op_ptr, nullptr, to_partition_ranges(dk),
             {timeout, std::move(permit), client_state, trace_state},
             db::consistency_level::LOCAL_SERIAL, db::consistency_level::LOCAL_QUORUM,
-            timeout, timeout, true, std::move(cdc_opts)).discard_result();
-    // We discarded cas()'s future value ("is_applied") because BatchWriteItems
+            timeout, timeout, true, std::move(cdc_opts)).finally([op = std::move(op)]{}).discard_result();
+    // We discarded cas()'s future value ("is_applied") because BatchWriteItem
     // does not need to support conditional updates.
 }
 
@@ -3131,30 +3135,34 @@ static future<> do_batch_write(service::storage_proxy& proxy,
         // Multiple mutations may be destined for the same partition, adding
         // or deleting different items of one partition. Join them together
         // because we can do them in one cas() call.
-        std::unordered_map<schema_decorated_key, std::vector<put_or_delete_item>, schema_decorated_key_hash, schema_decorated_key_equal>
-            key_builders(1, schema_decorated_key_hash{}, schema_decorated_key_equal{});
+        using map_type = std::unordered_map<schema_decorated_key, 
+            std::vector<put_or_delete_item>, 
+            schema_decorated_key_hash, 
+            schema_decorated_key_equal>;
+        auto key_builders = std::make_unique<map_type>(1, schema_decorated_key_hash{}, schema_decorated_key_equal{});
         for (auto& b : mutation_builders) {
             auto dk = dht::decorate_key(*b.first, b.second.pk());
-            auto [it, added] = key_builders.try_emplace(schema_decorated_key{b.first, dk});
+            auto [it, added] = key_builders->try_emplace(schema_decorated_key{b.first, dk});
             it->second.push_back(std::move(b.second));
         }
-        return parallel_for_each(std::move(key_builders), [&proxy, &client_state, &stats, trace_state, ssg, permit = std::move(permit)] (auto& e) {
+        auto* key_builders_ptr = key_builders.get();
+        return parallel_for_each(*key_builders_ptr, [&proxy, &client_state, &stats, trace_state, ssg, permit = std::move(permit)] (const auto& e) {
             stats.write_using_lwt++;
             auto desired_shard = service::cas_shard(*e.first.schema, e.first.dk.token());
             if (desired_shard.this_shard()) {
-                return cas_write(proxy, e.first.schema, std::move(desired_shard), e.first.dk, std::move(e.second), client_state, trace_state, permit);
+                return cas_write(proxy, e.first.schema, std::move(desired_shard), e.first.dk, e.second, client_state, trace_state, permit);
             } else {
                 stats.shard_bounce_for_lwt++;
                 return proxy.container().invoke_on(desired_shard.shard(), ssg,
                             [cs = client_state.move_to_other_shard(),
-                             mb = e.second,
-                             dk = e.first.dk,
+                             &mb = e.second,
+                             &dk = e.first.dk,
                              ks = e.first.schema->ks_name(),
                              cf = e.first.schema->cf_name(),
                              gt =  tracing::global_trace_state_ptr(trace_state),
                              permit = std::move(permit)]
                             (service::storage_proxy& proxy) mutable {
-                    return do_with(cs.get(), [&proxy, mb = std::move(mb), dk = std::move(dk), ks = std::move(ks), cf = std::move(cf),
+                    return do_with(cs.get(), [&proxy, &mb, &dk, ks = std::move(ks), cf = std::move(cf),
                                               trace_state = tracing::trace_state_ptr(gt)]
                                               (service::client_state& client_state) mutable {
                         auto schema = proxy.data_dictionary().find_schema(ks, cf);
@@ -3168,11 +3176,11 @@ static future<> do_batch_write(service::storage_proxy& proxy,
                         //FIXME: Instead of passing empty_service_permit() to the background operation,
                         // the current permit's lifetime should be prolonged, so that it's destructed
                         // only after all background operations are finished as well.
-                        return cas_write(proxy, schema, std::move(cas_shard), dk, std::move(mb), client_state, std::move(trace_state), empty_service_permit());
+                        return cas_write(proxy, schema, std::move(cas_shard), dk, mb, client_state, std::move(trace_state), empty_service_permit());
                     });
                 }).finally([desired_shard = std::move(desired_shard)]{});
             }
-        });
+        }).finally([key_builders = std::move(key_builders)]{});
     }
 }
 

api/api-doc/task_manager.json

@@ -349,9 +349,13 @@
                "type":"long",
                "description":"The shard the task is running on"
             },
+            "creation_time":{
+               "type":"datetime",
+               "description":"The creation time of the task (when it was queued); extracted from the task_id UUID"
+            },
             "start_time":{
                "type":"datetime",
-               "description":"The start time of the task; unspecified (equal to epoch) when state == created"
+               "description":"The start time of the task (when execution began); unspecified (equal to epoch) when state == created"
             },
             "end_time":{
                "type":"datetime",
@@ -398,13 +402,17 @@
                "type":"boolean",
                "description":"Boolean flag indicating whether the task can be aborted"
             },
+            "creation_time":{
+               "type":"datetime",
+               "description":"The creation time of the task (when it was queued); extracted from the task_id UUID"
+            },
             "start_time":{
                "type":"datetime",
-               "description":"The start time of the task"
+               "description":"The start time of the task (when execution began); unspecified (equal to epoch) when state == created"
             },
             "end_time":{
                "type":"datetime",
-               "description":"The end time of the task (unspecified when the task is not completed)"
+               "description":"The end time of the task (when execution completed); unspecified (equal to epoch) when the task is not completed"
             },
             "error":{
                "type":"string",

api/task_manager.cc

@@ -55,6 +55,7 @@ tm::task_status make_status(tasks::task_status status, sharded<gms::gossiper>& g
     res.scope = status.scope;
     res.state = status.state;
     res.is_abortable = bool(status.is_abortable);
+    res.creation_time = get_time(status.creation_time);
     res.start_time = get_time(status.start_time);
     res.end_time = get_time(status.end_time);
     res.error = status.error;
@@ -83,6 +84,7 @@ tm::task_stats make_stats(tasks::task_stats stats) {
     res.table = stats.table;
     res.entity = stats.entity;
     res.shard = stats.shard;
+    res.creation_time = get_time(stats.creation_time);
     res.start_time = get_time(stats.start_time);
     res.end_time = get_time(stats.end_time);;
     return res;

auth/CMakeLists.txt

@@ -9,6 +9,7 @@ target_sources(scylla_auth
     allow_all_authorizer.cc
     authenticated_user.cc
     authenticator.cc
+    cache.cc
     certificate_authenticator.cc
     common.cc
     default_authorizer.cc

auth/allow_all_authenticator.cc

@@ -23,6 +23,7 @@ static const class_registrator<
         cql3::query_processor&,
         ::service::raft_group0_client&,
         ::service::migration_manager&,
+        cache&,
         utils::alien_worker&> registration("org.apache.cassandra.auth.AllowAllAuthenticator");
 
 }

auth/allow_all_authenticator.hh

@@ -12,6 +12,7 @@
 
 #include "auth/authenticated_user.hh"
 #include "auth/authenticator.hh"
+#include "auth/cache.hh"
 #include "auth/common.hh"
 #include "utils/alien_worker.hh"
 
@@ -29,7 +30,7 @@ extern const std::string_view allow_all_authenticator_name;
 
 class allow_all_authenticator final : public authenticator {
 public:
-    allow_all_authenticator(cql3::query_processor&, ::service::raft_group0_client&, ::service::migration_manager&, utils::alien_worker&) {
+    allow_all_authenticator(cql3::query_processor&, ::service::raft_group0_client&, ::service::migration_manager&, cache&, utils::alien_worker&) {
     }
 
     virtual future<> start() override {

auth/cache.cc

@@ -0,0 +1,180 @@
+/*
+ * Copyright (C) 2017-present ScyllaDB
+ */
+
+/*
+ * SPDX-License-Identifier: LicenseRef-ScyllaDB-Source-Available-1.0
+ */
+
+#include "auth/cache.hh"
+#include "auth/common.hh"
+#include "auth/roles-metadata.hh"
+#include "cql3/query_processor.hh"
+#include "cql3/untyped_result_set.hh"
+#include "db/consistency_level_type.hh"
+#include "db/system_keyspace.hh"
+#include "schema/schema.hh"
+#include <iterator>
+#include <seastar/coroutine/maybe_yield.hh>
+#include <seastar/core/format.hh>
+
+namespace auth {
+
+logging::logger logger("auth-cache");
+
+cache::cache(cql3::query_processor& qp) noexcept
+    : _current_version(0)
+    , _qp(qp) {
+}
+
+lw_shared_ptr<const cache::role_record> cache::get(const role_name_t& role) const noexcept {
+    auto it = _roles.find(role);
+    if (it == _roles.end()) {
+        return {};
+    }
+    return it->second;
+}
+
+future<lw_shared_ptr<cache::role_record>> cache::fetch_role(const role_name_t& role) const {
+    auto rec = make_lw_shared<role_record>();
+    rec->version = _current_version;
+
+    auto fetch = [this, &role](const sstring& q) {
+        return _qp.execute_internal(q, db::consistency_level::LOCAL_ONE,
+                internal_distributed_query_state(), {role},
+                cql3::query_processor::cache_internal::yes);
+    };
+    // roles
+    {
+        static const sstring q = format("SELECT * FROM {}.{} WHERE role = ?", db::system_keyspace::NAME, meta::roles_table::name);
+        auto rs = co_await fetch(q);
+        if (!rs->empty()) {
+            auto& r = rs->one();
+            rec->is_superuser = r.get_or<bool>("is_superuser", false);
+            rec->can_login = r.get_or<bool>("can_login", false);
+            rec->salted_hash = r.get_or<sstring>("salted_hash", "");
+            if (r.has("member_of")) {
+                auto mo = r.get_set<sstring>("member_of");
+                rec->member_of.insert(
+                        std::make_move_iterator(mo.begin()),
+                        std::make_move_iterator(mo.end()));
+            }
+        } else {
+            // role got deleted
+            co_return nullptr;
+        }
+    }
+    // members
+    {
+        static const sstring q = format("SELECT role, member FROM {}.{} WHERE role = ?", db::system_keyspace::NAME, ROLE_MEMBERS_CF);
+        auto rs = co_await fetch(q);
+        for (const auto& r : *rs) {
+            rec->members.insert(r.get_as<sstring>("member"));
+            co_await coroutine::maybe_yield();
+        }
+    }
+    // attributes
+    {
+        static const sstring q = format("SELECT role, name, value FROM {}.{} WHERE role = ?", db::system_keyspace::NAME, ROLE_ATTRIBUTES_CF);
+        auto rs = co_await fetch(q);
+        for (const auto& r : *rs) {
+            rec->attributes[r.get_as<sstring>("name")] =
+                    r.get_as<sstring>("value");
+            co_await coroutine::maybe_yield();
+        }
+    }
+    // permissions
+    {
+        static const sstring q = format("SELECT role, resource, permissions FROM {}.{} WHERE role = ?", db::system_keyspace::NAME, PERMISSIONS_CF);
+        auto rs = co_await fetch(q);
+        for (const auto& r : *rs) {
+            auto resource = r.get_as<sstring>("resource");
+            auto perms_strings = r.get_set<sstring>("permissions");
+            std::unordered_set<sstring> perms_set(perms_strings.begin(), perms_strings.end());
+            auto pset = permissions::from_strings(perms_set);
+            rec->permissions[std::move(resource)] = std::move(pset);
+            co_await coroutine::maybe_yield();
+        }
+    }
+    co_return rec;
+}
+
+future<> cache::prune_all() noexcept {
+    for (auto it = _roles.begin(); it != _roles.end(); ) {
+        if (it->second->version != _current_version) {
+            _roles.erase(it++);
+            co_await coroutine::maybe_yield();
+        } else {
+            ++it;
+        }
+    }
+    co_return;
+}
+
+future<> cache::load_all() {
+    if (legacy_mode(_qp)) {
+        co_return;
+    }
+    SCYLLA_ASSERT(this_shard_id() == 0);
+    ++_current_version;
+
+    logger.info("Loading all roles");
+    const uint32_t page_size = 128;
+    auto loader = [this](const cql3::untyped_result_set::row& r) -> future<stop_iteration> {
+        const auto name = r.get_as<sstring>("role");
+        auto role = co_await fetch_role(name);
+        if (role) {
+            _roles[name] = role;
+        }
+        co_return stop_iteration::no;
+    };
+    co_await _qp.query_internal(format("SELECT * FROM {}.{}",
+            db::system_keyspace::NAME, meta::roles_table::name),
+            db::consistency_level::LOCAL_ONE, {}, page_size, loader);
+
+    co_await prune_all();
+    for (const auto& [name, role] : _roles) {
+        co_await distribute_role(name, role);
+    }
+    co_await container().invoke_on_others([this](cache& c) -> future<> {
+        c._current_version = _current_version;
+        co_await c.prune_all();
+    });
+}
+
+future<> cache::load_roles(std::unordered_set<role_name_t> roles) {
+    if (legacy_mode(_qp)) {
+        co_return;
+    }
+    for (const auto& name : roles) {
+        logger.info("Loading role {}", name);
+        auto role = co_await fetch_role(name);
+         if (role) {
+            _roles[name] = role;
+        } else {
+            _roles.erase(name);
+        }
+        co_await distribute_role(name, role);
+    }
+}
+
+future<> cache::distribute_role(const role_name_t& name, lw_shared_ptr<role_record> role) {
+    auto role_ptr = role.get();
+    co_await container().invoke_on_others([&name, role_ptr](cache& c) {
+        if (!role_ptr) {
+            c._roles.erase(name);
+            return;
+        }
+        auto role_copy = make_lw_shared<role_record>(*role_ptr);
+        c._roles[name] = std::move(role_copy);
+    });
+}
+
+bool cache::includes_table(const table_id& id) noexcept {
+    return id == db::system_keyspace::roles()->id()
+            || id == db::system_keyspace::role_members()->id()
+            || id == db::system_keyspace::role_attributes()->id()
+            || id == db::system_keyspace::role_permissions()->id();
+}
+
+} // namespace auth

auth/cache.hh

@@ -0,0 +1,61 @@
+/*
+ * Copyright (C) 2025-present ScyllaDB
+ */
+
+/*
+ * SPDX-License-Identifier: LicenseRef-ScyllaDB-Source-Available-1.0
+ */
+
+#pragma once
+
+#include <unordered_set>
+#include <unordered_map>
+
+#include <seastar/core/sstring.hh>
+#include <seastar/core/future.hh>
+#include <seastar/core/sharded.hh>
+#include <seastar/core/shared_ptr.hh>
+
+#include <absl/container/flat_hash_map.h>
+
+#include "auth/permission.hh"
+#include "auth/common.hh"
+
+namespace cql3 { class query_processor; }
+
+namespace auth {
+
+class cache : public peering_sharded_service<cache> {
+public:
+    using role_name_t = sstring;
+    using version_tag_t = char;
+
+	struct role_record {
+        bool can_login = false;
+        bool is_superuser = false;
+        std::unordered_set<role_name_t> member_of;
+        std::unordered_set<role_name_t> members;
+        sstring salted_hash;
+        std::unordered_map<sstring, sstring> attributes;
+        std::unordered_map<sstring, permission_set> permissions;
+        version_tag_t version; // used for seamless cache reloads
+    };
+
+    explicit cache(cql3::query_processor& qp) noexcept;
+    lw_shared_ptr<const role_record> get(const role_name_t& role) const noexcept;
+    future<> load_all();
+    future<> load_roles(std::unordered_set<role_name_t> roles);
+    static bool includes_table(const table_id&) noexcept;
+
+private:
+    using roles_map = absl::flat_hash_map<role_name_t, lw_shared_ptr<role_record>>;
+    roles_map _roles;
+    version_tag_t _current_version;
+    cql3::query_processor& _qp;
+
+    future<lw_shared_ptr<role_record>> fetch_role(const role_name_t& role) const;
+    future<> prune_all() noexcept;
+    future<> distribute_role(const role_name_t& name, const lw_shared_ptr<role_record> role);
+};
+
+} // namespace auth

auth/certificate_authenticator.cc

@@ -8,6 +8,7 @@
  */
 
 #include "auth/certificate_authenticator.hh"
+#include "auth/cache.hh"
 
 #include <boost/regex.hpp>
 #include <fmt/ranges.h>
@@ -34,13 +35,14 @@ static const class_registrator<auth::authenticator
     , cql3::query_processor&
     , ::service::raft_group0_client&
     , ::service::migration_manager&
+    , auth::cache&
     , utils::alien_worker&> cert_auth_reg(CERT_AUTH_NAME);
 
 enum class auth::certificate_authenticator::query_source {
     subject, altname
 };
 
-auth::certificate_authenticator::certificate_authenticator(cql3::query_processor& qp, ::service::raft_group0_client&, ::service::migration_manager&, utils::alien_worker&)
+auth::certificate_authenticator::certificate_authenticator(cql3::query_processor& qp, ::service::raft_group0_client&, ::service::migration_manager&, auth::cache&, utils::alien_worker&)
     : _queries([&] {
         auto& conf = qp.db().get_config();
         auto queries = conf.auth_certificate_role_queries();

auth/certificate_authenticator.hh

@@ -26,13 +26,15 @@ class raft_group0_client;
 
 namespace auth {
 
+class cache;
+
 extern const std::string_view certificate_authenticator_name;
 
 class certificate_authenticator : public authenticator {
     enum class query_source;
     std::vector<std::pair<query_source, boost::regex>> _queries;
 public:
-    certificate_authenticator(cql3::query_processor&, ::service::raft_group0_client&, ::service::migration_manager&, utils::alien_worker&);
+    certificate_authenticator(cql3::query_processor&, ::service::raft_group0_client&, ::service::migration_manager&, cache&, utils::alien_worker&);
     ~certificate_authenticator();
 
     future<> start() override;

auth/common.hh

@@ -48,6 +48,10 @@ extern constinit const std::string_view AUTH_PACKAGE_NAME;
 
 } // namespace meta
 
+constexpr std::string_view PERMISSIONS_CF = "role_permissions";
+constexpr std::string_view ROLE_MEMBERS_CF = "role_members";
+constexpr std::string_view ROLE_ATTRIBUTES_CF = "role_attributes";
+
 // This is a helper to check whether auth-v2 is on.
 bool legacy_mode(cql3::query_processor& qp);
 

auth/default_authorizer.cc

@@ -37,7 +37,6 @@ std::string_view default_authorizer::qualified_java_name() const {
 static constexpr std::string_view ROLE_NAME = "role";
 static constexpr std::string_view RESOURCE_NAME = "resource";
 static constexpr std::string_view PERMISSIONS_NAME = "permissions";
-static constexpr std::string_view PERMISSIONS_CF = "role_permissions";
 
 static logging::logger alogger("default_authorizer");
 

auth/ldap_role_manager.cc

@@ -83,17 +83,18 @@ static const class_registrator<
     ldap_role_manager,
     cql3::query_processor&,
     ::service::raft_group0_client&,
-    ::service::migration_manager&> registration(ldap_role_manager_full_name);
+    ::service::migration_manager&,
+    cache&> registration(ldap_role_manager_full_name);
 
 ldap_role_manager::ldap_role_manager(
         std::string_view query_template, std::string_view target_attr, std::string_view bind_name, std::string_view bind_password,
-        cql3::query_processor& qp, ::service::raft_group0_client& rg0c, ::service::migration_manager& mm)
-        : _std_mgr(qp, rg0c, mm), _group0_client(rg0c), _query_template(query_template), _target_attr(target_attr), _bind_name(bind_name)
+        cql3::query_processor& qp, ::service::raft_group0_client& rg0c, ::service::migration_manager& mm, cache& cache)
+        : _std_mgr(qp, rg0c, mm, cache), _group0_client(rg0c), _query_template(query_template), _target_attr(target_attr), _bind_name(bind_name)
         , _bind_password(bind_password)
         , _connection_factory(bind(std::mem_fn(&ldap_role_manager::reconnect), std::ref(*this))) {
 }
 
-ldap_role_manager::ldap_role_manager(cql3::query_processor& qp, ::service::raft_group0_client& rg0c, ::service::migration_manager& mm)
+ldap_role_manager::ldap_role_manager(cql3::query_processor& qp, ::service::raft_group0_client& rg0c, ::service::migration_manager& mm, cache& cache)
     : ldap_role_manager(
             qp.db().get_config().ldap_url_template(),
             qp.db().get_config().ldap_attr_role(),
@@ -101,7 +102,8 @@ ldap_role_manager::ldap_role_manager(cql3::query_processor& qp, ::service::raft_
             qp.db().get_config().ldap_bind_passwd(),
             qp,
             rg0c,
-            mm) {
+            mm,
+            cache) {
 }
 
 std::string_view ldap_role_manager::qualified_java_name() const noexcept {

auth/ldap_role_manager.hh

@@ -14,6 +14,7 @@
 
 #include "ent/ldap/ldap_connection.hh"
 #include "standard_role_manager.hh"
+#include "auth/cache.hh"
 
 namespace auth {
 
@@ -43,12 +44,13 @@ class ldap_role_manager : public role_manager {
             std::string_view bind_password, ///< LDAP bind credentials.
             cql3::query_processor& qp, ///< Passed to standard_role_manager.
             ::service::raft_group0_client& rg0c, ///< Passed to standard_role_manager.
-            ::service::migration_manager& mm ///< Passed to standard_role_manager.
+            ::service::migration_manager& mm, ///< Passed to standard_role_manager.
+            cache& cache ///< Passed to standard_role_manager.
     );
 
     /// Retrieves LDAP configuration entries from qp and invokes the other constructor.  Required by
     /// class_registrator<role_manager>.
-    ldap_role_manager(cql3::query_processor& qp, ::service::raft_group0_client& rg0c, ::service::migration_manager& mm);
+    ldap_role_manager(cql3::query_processor& qp, ::service::raft_group0_client& rg0c, ::service::migration_manager& mm, cache& cache);
 
     /// Thrown when query-template parsing fails.
     struct url_error : public std::runtime_error {

auth/maintenance_socket_role_manager.cc

@@ -11,6 +11,7 @@
 #include <seastar/core/future.hh>
 #include <stdexcept>
 #include <string_view>
+#include "auth/cache.hh"
 #include "cql3/description.hh"
 #include "utils/class_registrator.hh"
 
@@ -23,7 +24,8 @@ static const class_registrator<
         maintenance_socket_role_manager,
         cql3::query_processor&,
         ::service::raft_group0_client&,
-        ::service::migration_manager&> registration(sstring{maintenance_socket_role_manager_name});
+        ::service::migration_manager&,
+        cache&> registration(sstring{maintenance_socket_role_manager_name});
 
 
 std::string_view maintenance_socket_role_manager::qualified_java_name() const noexcept {

auth/maintenance_socket_role_manager.hh

@@ -8,6 +8,7 @@
 
 #pragma once
 
+#include "auth/cache.hh"
 #include "auth/resource.hh"
 #include "auth/role_manager.hh"
 #include <seastar/core/future.hh>
@@ -29,7 +30,7 @@ extern const std::string_view maintenance_socket_role_manager_name;
 // system_auth keyspace, which may be not yet created when the maintenance socket starts listening.
 class maintenance_socket_role_manager final : public role_manager {
 public:
-    maintenance_socket_role_manager(cql3::query_processor&, ::service::raft_group0_client&, ::service::migration_manager&) {}
+    maintenance_socket_role_manager(cql3::query_processor&, ::service::raft_group0_client&, ::service::migration_manager&, cache&) {}
 
     virtual std::string_view qualified_java_name() const noexcept override;
 

auth/password_authenticator.cc

@@ -49,6 +49,7 @@ static const class_registrator<
         cql3::query_processor&,
         ::service::raft_group0_client&,
         ::service::migration_manager&,
+        cache&,
         utils::alien_worker&> password_auth_reg("org.apache.cassandra.auth.PasswordAuthenticator");
 
 static thread_local auto rng_for_salt = std::default_random_engine(std::random_device{}());
@@ -63,10 +64,11 @@ std::string password_authenticator::default_superuser(const db::config& cfg) {
 password_authenticator::~password_authenticator() {
 }
 
-password_authenticator::password_authenticator(cql3::query_processor& qp, ::service::raft_group0_client& g0, ::service::migration_manager& mm, utils::alien_worker& hashing_worker)
+password_authenticator::password_authenticator(cql3::query_processor& qp, ::service::raft_group0_client& g0, ::service::migration_manager& mm, cache& cache, utils::alien_worker& hashing_worker)
     : _qp(qp)
     , _group0_client(g0)
     , _migration_manager(mm)
+    , _cache(cache)
     , _stopped(make_ready_future<>()) 
     , _superuser(default_superuser(qp.db().get_config()))
     , _hashing_worker(hashing_worker)
@@ -315,11 +317,20 @@ future<authenticated_user> password_authenticator::authenticate(
     const sstring password = credentials.at(PASSWORD_KEY);
 
     try {
-        const std::optional<sstring> salted_hash = co_await get_password_hash(username);
-        if (!salted_hash) {
-            throw exceptions::authentication_exception("Username and/or password are incorrect");
+        std::optional<sstring> salted_hash;
+        if (legacy_mode(_qp)) {
+            salted_hash = co_await get_password_hash(username);
+            if (!salted_hash) {
+                throw exceptions::authentication_exception("Username and/or password are incorrect");
+            }
+        } else {
+            auto role = _cache.get(username);
+            if (!role || role->salted_hash.empty()) {
+                throw exceptions::authentication_exception("Username and/or password are incorrect");
+            }
+            salted_hash = role->salted_hash;
         }
-        const bool password_match = co_await _hashing_worker.submit<bool>([password = std::move(password), salted_hash = std::move(salted_hash)]{
+        const bool password_match = co_await _hashing_worker.submit<bool>([password = std::move(password), salted_hash] {
             return passwords::check(password, *salted_hash);
         });
         if (!password_match) {

auth/password_authenticator.hh

@@ -16,6 +16,7 @@
 #include "db/consistency_level_type.hh"
 #include "auth/authenticator.hh"
 #include "auth/passwords.hh"
+#include "auth/cache.hh"
 #include "service/raft/raft_group0_client.hh"
 #include "utils/alien_worker.hh"
 
@@ -41,6 +42,7 @@ class password_authenticator : public authenticator {
     cql3::query_processor& _qp;
     ::service::raft_group0_client& _group0_client;
     ::service::migration_manager& _migration_manager;
+    cache& _cache;
     future<> _stopped;
     abort_source _as;
     std::string _superuser; // default superuser name from the config (may or may not be present in roles table)
@@ -53,7 +55,7 @@ public:
     static db::consistency_level consistency_for_user(std::string_view role_name);
     static std::string default_superuser(const db::config&);
 
-    password_authenticator(cql3::query_processor&, ::service::raft_group0_client&, ::service::migration_manager&, utils::alien_worker&);
+    password_authenticator(cql3::query_processor&, ::service::raft_group0_client&, ::service::migration_manager&, cache&, utils::alien_worker&);
 
     ~password_authenticator();
 

auth/saslauthd_authenticator.cc

@@ -35,9 +35,10 @@ static const class_registrator<
         cql3::query_processor&,
         ::service::raft_group0_client&,
         ::service::migration_manager&,
+        cache&,
         utils::alien_worker&> saslauthd_auth_reg("com.scylladb.auth.SaslauthdAuthenticator");
 
-saslauthd_authenticator::saslauthd_authenticator(cql3::query_processor& qp, ::service::raft_group0_client&, ::service::migration_manager&, utils::alien_worker&)
+saslauthd_authenticator::saslauthd_authenticator(cql3::query_processor& qp, ::service::raft_group0_client&, ::service::migration_manager&, cache&, utils::alien_worker&)
     : _socket_path(qp.db().get_config().saslauthd_socket_path())
 {}
 

auth/saslauthd_authenticator.hh

@@ -11,6 +11,7 @@
 #pragma once
 
 #include "auth/authenticator.hh"
+#include "auth/cache.hh"
 #include "utils/alien_worker.hh"
 
 namespace cql3 {
@@ -29,7 +30,7 @@ namespace auth {
 class saslauthd_authenticator : public authenticator {
     sstring _socket_path; ///< Path to the domain socket on which saslauthd is listening.
 public:
-    saslauthd_authenticator(cql3::query_processor&, ::service::raft_group0_client&, ::service::migration_manager&, utils::alien_worker&);
+    saslauthd_authenticator(cql3::query_processor&, ::service::raft_group0_client&, ::service::migration_manager&, cache&,utils::alien_worker&);
 
     future<> start() override;
 

auth/service.cc

@@ -17,6 +17,7 @@
 #include <chrono>
 
 #include <seastar/core/future-util.hh>
+#include <seastar/core/shard_id.hh>
 #include <seastar/core/sharded.hh>
 #include <seastar/core/shared_ptr.hh>
 
@@ -157,6 +158,7 @@ static future<> validate_role_exists(const service& ser, std::string_view role_n
 
 service::service(
         utils::loading_cache_config c,
+        cache& cache,
         cql3::query_processor& qp,
         ::service::raft_group0_client& g0,
         ::service::migration_notifier& mn,
@@ -166,6 +168,7 @@ service::service(
         maintenance_socket_enabled used_by_maintenance_socket)
             : _loading_cache_config(std::move(c))
             , _permissions_cache(nullptr)
+            , _cache(cache)
             , _qp(qp)
             , _group0_client(g0)
             , _mnotifier(mn)
@@ -188,15 +191,17 @@ service::service(
         ::service::migration_manager& mm,
         const service_config& sc,
         maintenance_socket_enabled used_by_maintenance_socket,
+        cache& cache,
         utils::alien_worker& hashing_worker)
             : service(
                       std::move(c),
+                      cache,
                       qp,
                       g0,
                       mn,
                       create_object<authorizer>(sc.authorizer_java_name, qp, g0, mm),
-                      create_object<authenticator>(sc.authenticator_java_name, qp, g0, mm, hashing_worker),
-                      create_object<role_manager>(sc.role_manager_java_name, qp, g0, mm),
+                      create_object<authenticator>(sc.authenticator_java_name, qp, g0, mm, cache, hashing_worker),
+                      create_object<role_manager>(sc.role_manager_java_name, qp, g0, mm, cache),
                       used_by_maintenance_socket) {
 }
 
@@ -232,6 +237,9 @@ future<> service::start(::service::migration_manager& mm, db::system_keyspace& s
     auto auth_version = co_await sys_ks.get_auth_version();
     // version is set in query processor to be easily available in various places we call auth::legacy_mode check.
     _qp.auth_version = auth_version;
+    if (this_shard_id() == 0) {
+        co_await _cache.load_all();
+    }
     if (!_used_by_maintenance_socket) {
         // this legacy keyspace is only used by cqlsh
         // it's needed when executing `list roles` or `list users`

auth/service.hh

@@ -21,6 +21,7 @@
 #include "auth/authorizer.hh"
 #include "auth/permission.hh"
 #include "auth/permissions_cache.hh"
+#include "auth/cache.hh"
 #include "auth/role_manager.hh"
 #include "auth/common.hh"
 #include "cql3/description.hh"
@@ -77,6 +78,7 @@ public:
 class service final : public seastar::peering_sharded_service<service> {
     utils::loading_cache_config _loading_cache_config;
     std::unique_ptr<permissions_cache> _permissions_cache;
+    cache& _cache;
 
     cql3::query_processor& _qp;
 
@@ -107,6 +109,7 @@ class service final : public seastar::peering_sharded_service<service> {
 public:
     service(
             utils::loading_cache_config,
+            cache& cache,
             cql3::query_processor&,
             ::service::raft_group0_client&,
             ::service::migration_notifier&,
@@ -128,6 +131,7 @@ public:
             ::service::migration_manager&,
             const service_config&,
             maintenance_socket_enabled,
+            cache&,
             utils::alien_worker&);
 
     future<> start(::service::migration_manager&, db::system_keyspace&);

auth/standard_role_manager.cc

@@ -41,21 +41,6 @@
 
 namespace auth {
 
-namespace meta {
-
-namespace role_members_table {
-
-constexpr std::string_view name{"role_members" , 12};
-
-}
-
-namespace role_attributes_table {
-
-constexpr std::string_view name{"role_attributes", 15};
-
-}
-
-}
 
 static logging::logger log("standard_role_manager");
 
@@ -64,7 +49,8 @@ static const class_registrator<
         standard_role_manager,
         cql3::query_processor&,
         ::service::raft_group0_client&,
-        ::service::migration_manager&> registration("org.apache.cassandra.auth.CassandraRoleManager");
+        ::service::migration_manager&,
+        cache&> registration("org.apache.cassandra.auth.CassandraRoleManager");
 
 struct record final {
     sstring name;
@@ -121,10 +107,11 @@ static bool has_can_login(const cql3::untyped_result_set_row& row) {
     return row.has("can_login") && !(boolean_type->deserialize(row.get_blob_unfragmented("can_login")).is_null());
 }
 
-standard_role_manager::standard_role_manager(cql3::query_processor& qp, ::service::raft_group0_client& g0, ::service::migration_manager& mm)
+standard_role_manager::standard_role_manager(cql3::query_processor& qp, ::service::raft_group0_client& g0, ::service::migration_manager& mm, cache& cache)
     : _qp(qp)
     , _group0_client(g0)
     , _migration_manager(mm)
+    , _cache(cache)
     , _stopped(make_ready_future<>())
     , _superuser(password_authenticator::default_superuser(qp.db().get_config()))
 {}
@@ -136,7 +123,7 @@ std::string_view standard_role_manager::qualified_java_name() const noexcept {
 const resource_set& standard_role_manager::protected_resources() const {
     static const resource_set resources({
             make_data_resource(meta::legacy::AUTH_KS, meta::roles_table::name),
-            make_data_resource(meta::legacy::AUTH_KS, meta::role_members_table::name)});
+            make_data_resource(meta::legacy::AUTH_KS, ROLE_MEMBERS_CF)});
 
     return resources;
 }
@@ -160,7 +147,7 @@ future<> standard_role_manager::create_legacy_metadata_tables_if_missing() const
             "  PRIMARY KEY (role, member)"
             ")",
             meta::legacy::AUTH_KS,
-            meta::role_members_table::name);
+            ROLE_MEMBERS_CF);
     static const sstring create_role_attributes_query = seastar::format(
             "CREATE TABLE {}.{} ("
             "  role text,"
@@ -169,7 +156,7 @@ future<> standard_role_manager::create_legacy_metadata_tables_if_missing() const
             "  PRIMARY KEY(role, name)"
             ")",
             meta::legacy::AUTH_KS,
-            meta::role_attributes_table::name);
+            ROLE_ATTRIBUTES_CF);
     return when_all_succeed(
             create_legacy_metadata_table_if_missing(
                     meta::roles_table::name,
@@ -177,12 +164,12 @@ future<> standard_role_manager::create_legacy_metadata_tables_if_missing() const
                     create_roles_query,
                     _migration_manager),
             create_legacy_metadata_table_if_missing(
-                    meta::role_members_table::name,
+                    ROLE_MEMBERS_CF,
                     _qp,
                     create_role_members_query,
                     _migration_manager),
             create_legacy_metadata_table_if_missing(
-                    meta::role_attributes_table::name,
+                    ROLE_ATTRIBUTES_CF,
                     _qp,
                     create_role_attributes_query,
                     _migration_manager)).discard_result();
@@ -429,7 +416,7 @@ future<> standard_role_manager::drop(std::string_view role_name, ::service::grou
     const auto revoke_from_members = [this, role_name, &mc] () -> future<> {
         const sstring query = seastar::format("SELECT member FROM {}.{} WHERE role = ?",
                 get_auth_ks_name(_qp),
-                meta::role_members_table::name);
+                ROLE_MEMBERS_CF);
         const auto members = co_await _qp.execute_internal(
                 query,
                 consistency_for_role(role_name),
@@ -461,7 +448,7 @@ future<> standard_role_manager::drop(std::string_view role_name, ::service::grou
     const auto remove_attributes_of = [this, role_name, &mc] () -> future<> {
         const sstring query = seastar::format("DELETE FROM {}.{} WHERE role = ?",
                 get_auth_ks_name(_qp),
-                meta::role_attributes_table::name);
+                ROLE_ATTRIBUTES_CF);
         if (legacy_mode(_qp)) {
             co_await _qp.execute_internal(query, {sstring(role_name)},
                 cql3::query_processor::cache_internal::yes).discard_result();
@@ -517,7 +504,7 @@ standard_role_manager::legacy_modify_membership(
             case membership_change::add: {
                 const sstring insert_query = seastar::format("INSERT INTO {}.{} (role, member) VALUES (?, ?)",
                         get_auth_ks_name(_qp),
-                        meta::role_members_table::name);
+                        ROLE_MEMBERS_CF);
                 co_return co_await _qp.execute_internal(
                         insert_query,
                         consistency_for_role(role_name),
@@ -529,7 +516,7 @@ standard_role_manager::legacy_modify_membership(
             case membership_change::remove: {
                 const sstring delete_query = seastar::format("DELETE FROM {}.{} WHERE role = ? AND member = ?",
                         get_auth_ks_name(_qp),
-                        meta::role_members_table::name);
+                        ROLE_MEMBERS_CF);
                 co_return co_await _qp.execute_internal(
                         delete_query,
                         consistency_for_role(role_name),
@@ -567,12 +554,12 @@ standard_role_manager::modify_membership(
     case membership_change::add:
         modify_role_members = seastar::format("INSERT INTO {}.{} (role, member) VALUES (?, ?)",
                 get_auth_ks_name(_qp),
-                meta::role_members_table::name);
+                ROLE_MEMBERS_CF);
         break;
     case membership_change::remove:
         modify_role_members = seastar::format("DELETE FROM {}.{} WHERE role = ? AND member = ?",
                 get_auth_ks_name(_qp),
-                meta::role_members_table::name);
+                ROLE_MEMBERS_CF);
         break;
     default:
         on_internal_error(log, format("unknown membership_change value: {}", int(ch)));
@@ -666,7 +653,7 @@ future<role_set> standard_role_manager::query_granted(std::string_view grantee_n
 future<role_to_directly_granted_map> standard_role_manager::query_all_directly_granted(::service::query_state& qs) {
     const sstring query = seastar::format("SELECT * FROM {}.{}",
             get_auth_ks_name(_qp),
-            meta::role_members_table::name);
+            ROLE_MEMBERS_CF);
 
     const auto results = co_await _qp.execute_internal(
             query,
@@ -731,15 +718,21 @@ future<bool> standard_role_manager::is_superuser(std::string_view role_name) {
 }
 
 future<bool> standard_role_manager::can_login(std::string_view role_name) {
-    return require_record(_qp, role_name).then([](record r) {
-        return r.can_login;
-    });
+    if (legacy_mode(_qp)) {
+       const auto r = co_await require_record(_qp, role_name);
+       co_return r.can_login;
+    }
+    auto role = _cache.get(sstring(role_name));
+    if (!role) {
+        throw nonexistant_role(role_name);
+    }
+    co_return role->can_login;
 }
 
 future<std::optional<sstring>> standard_role_manager::get_attribute(std::string_view role_name, std::string_view attribute_name, ::service::query_state& qs) {
     const sstring query = seastar::format("SELECT name, value FROM {}.{} WHERE role = ? AND name = ?",
             get_auth_ks_name(_qp),
-            meta::role_attributes_table::name);
+            ROLE_ATTRIBUTES_CF);
     const auto result_set = co_await _qp.execute_internal(query, db::consistency_level::ONE, qs, {sstring(role_name), sstring(attribute_name)}, cql3::query_processor::cache_internal::yes);
     if (!result_set->empty()) {
         const cql3::untyped_result_set_row &row = result_set->one();
@@ -770,7 +763,7 @@ future<> standard_role_manager::set_attribute(std::string_view role_name, std::s
     }
     const sstring query = seastar::format("INSERT INTO {}.{} (role, name, value)  VALUES (?, ?, ?)",
             get_auth_ks_name(_qp),
-            meta::role_attributes_table::name);
+            ROLE_ATTRIBUTES_CF);
     if (legacy_mode(_qp)) {
         co_await _qp.execute_internal(query, {sstring(role_name), sstring(attribute_name), sstring(attribute_value)}, cql3::query_processor::cache_internal::yes).discard_result();
     } else {
@@ -785,7 +778,7 @@ future<> standard_role_manager::remove_attribute(std::string_view role_name, std
     }
     const sstring query = seastar::format("DELETE FROM {}.{} WHERE role = ? AND name = ?",
             get_auth_ks_name(_qp),
-            meta::role_attributes_table::name);
+            ROLE_ATTRIBUTES_CF);
     if (legacy_mode(_qp)) {
         co_await _qp.execute_internal(query, {sstring(role_name), sstring(attribute_name)}, cql3::query_processor::cache_internal::yes).discard_result();
     } else {

auth/standard_role_manager.hh

@@ -10,6 +10,7 @@
 
 #include "auth/common.hh"
 #include "auth/role_manager.hh"
+#include "auth/cache.hh"
 
 #include <string_view>
 
@@ -36,13 +37,14 @@ class standard_role_manager final : public role_manager {
     cql3::query_processor& _qp;
     ::service::raft_group0_client& _group0_client;
     ::service::migration_manager& _migration_manager;
+    cache& _cache;
     future<> _stopped;
     abort_source _as;
     std::string _superuser;
     shared_promise<> _superuser_created_promise;
 
 public:
-    standard_role_manager(cql3::query_processor&, ::service::raft_group0_client&, ::service::migration_manager&);
+    standard_role_manager(cql3::query_processor&, ::service::raft_group0_client&, ::service::migration_manager&, cache&);
 
     virtual std::string_view qualified_java_name() const noexcept override;
 

auth/transitional.cc

@@ -13,6 +13,7 @@
 #include "auth/authorizer.hh"
 #include "auth/default_authorizer.hh"
 #include "auth/password_authenticator.hh"
+#include "auth/cache.hh"
 #include "auth/permission.hh"
 #include "service/raft/raft_group0_client.hh"
 #include "utils/class_registrator.hh"
@@ -37,8 +38,8 @@ class transitional_authenticator : public authenticator {
 public:
     static const sstring PASSWORD_AUTHENTICATOR_NAME;
 
-    transitional_authenticator(cql3::query_processor& qp, ::service::raft_group0_client& g0, ::service::migration_manager& mm, utils::alien_worker& hashing_worker)
-            : transitional_authenticator(std::make_unique<password_authenticator>(qp, g0, mm, hashing_worker)) {
+    transitional_authenticator(cql3::query_processor& qp, ::service::raft_group0_client& g0, ::service::migration_manager& mm, cache& cache, utils::alien_worker& hashing_worker)
+            : transitional_authenticator(std::make_unique<password_authenticator>(qp, g0, mm, cache, hashing_worker)) {
     }
     transitional_authenticator(std::unique_ptr<authenticator> a)
             : _authenticator(std::move(a)) {
@@ -240,6 +241,7 @@ static const class_registrator<
         cql3::query_processor&,
         ::service::raft_group0_client&,
         ::service::migration_manager&,
+        auth::cache&,
         utils::alien_worker&> transitional_authenticator_reg(auth::PACKAGE_NAME + "TransitionalAuthenticator");
 
 static const class_registrator<

configure.py

@@ -445,6 +445,7 @@ ldap_tests = set([
 scylla_tests = set([
     'test/boost/combined_tests',
     'test/boost/UUID_test',
+    'test/boost/url_parse_test',
     'test/boost/advanced_rpc_compressor_test',
     'test/boost/allocation_strategy_test',
     'test/boost/alternator_unit_test',
@@ -1061,7 +1062,6 @@ scylla_core = (['message/messaging_service.cc',
                 'db/hints/resource_manager.cc',
                 'db/hints/sync_point.cc',
                 'db/large_data_handler.cc',
-                'db/legacy_schema_migrator.cc',
                 'db/marshal/type_parser.cc',
                 'db/per_partition_rate_limit_options.cc',
                 'db/rate_limiter.cc',
@@ -1195,6 +1195,7 @@ scylla_core = (['message/messaging_service.cc',
                 'auth/allow_all_authorizer.cc',
                 'auth/authenticated_user.cc',
                 'auth/authenticator.cc',
+                'auth/cache.cc',
                 'auth/common.cc',
                 'auth/default_authorizer.cc',
                 'auth/resource.cc',
@@ -1646,6 +1647,7 @@ deps['test/boost/bytes_ostream_test'] = [
 ]
 deps['test/boost/input_stream_test'] = ['test/boost/input_stream_test.cc']
 deps['test/boost/UUID_test'] = ['clocks-impl.cc', 'utils/UUID_gen.cc', 'test/boost/UUID_test.cc', 'utils/uuid.cc', 'utils/dynamic_bitset.cc', 'utils/hashers.cc', 'utils/on_internal_error.cc']
+deps['test/boost/url_parse_test'] = ['utils/http.cc', 'test/boost/url_parse_test.cc', ]
 deps['test/boost/murmur_hash_test'] = ['bytes.cc', 'utils/murmur_hash.cc', 'test/boost/murmur_hash_test.cc']
 deps['test/boost/allocation_strategy_test'] = ['test/boost/allocation_strategy_test.cc', 'utils/logalloc.cc', 'utils/dynamic_bitset.cc', 'utils/labels.cc']
 deps['test/boost/log_heap_test'] = ['test/boost/log_heap_test.cc']

cql3/Cql.g

@@ -575,6 +575,15 @@ usingTimeoutServiceLevelClauseObjective[std::unique_ptr<cql3::attributes::raw>&
     | serviceLevel sl_name=serviceLevelOrRoleName { attrs->service_level = std::move(sl_name); }
     ;
 
+usingTimeoutConcurrencyClause[std::unique_ptr<cql3::attributes::raw>& attrs]
+    : K_USING usingTimeoutConcurrencyClauseObjective[attrs] ( K_AND usingTimeoutConcurrencyClauseObjective[attrs] )*
+    ;
+
+usingTimeoutConcurrencyClauseObjective[std::unique_ptr<cql3::attributes::raw>& attrs]
+    : K_TIMEOUT to=term { attrs->timeout = std::move(to); }
+    | K_CONCURRENCY c=term { attrs->concurrency = std::move(c); }
+    ;
+
 /**
  * UPDATE <CF>
  * USING TIMESTAMP <long>
@@ -666,7 +675,7 @@ pruneMaterializedViewStatement returns [std::unique_ptr<raw::select_statement> e
         auto attrs = std::make_unique<cql3::attributes::raw>();
         expression wclause = conjunction{};
     }
-	: K_PRUNE K_MATERIALIZED K_VIEW cf=columnFamilyName (K_WHERE w=whereClause { wclause = std::move(w); } )? ( usingClause[attrs] )?
+	: K_PRUNE K_MATERIALIZED K_VIEW cf=columnFamilyName (K_WHERE w=whereClause { wclause = std::move(w); } )? ( usingTimeoutConcurrencyClause[attrs] )?
 	  {
 	        auto params = make_lw_shared<raw::select_statement::parameters>(std::move(orderings), is_distinct, allow_filtering, statement_subtype, bypass_cache);
 	        return std::make_unique<raw::select_statement>(std::move(cf), std::move(params),
@@ -2370,6 +2379,7 @@ K_LIKE:        L I K E;
 
 K_TIMEOUT:     T I M E O U T;
 K_PRUNE:       P R U N E;
+K_CONCURRENCY: C O N C U R R E N C Y;
 
 K_EXECUTE:     E X E C U T E;
 

cql3/attributes.cc

@@ -20,19 +20,21 @@
 namespace cql3 {
 
 std::unique_ptr<attributes> attributes::none() {
-    return std::unique_ptr<attributes>{new attributes{{}, {}, {}, {}}};
+    return std::unique_ptr<attributes>{new attributes{{}, {}, {}, {}, {}}};
 }
 
 attributes::attributes(std::optional<cql3::expr::expression>&& timestamp,
                        std::optional<cql3::expr::expression>&& time_to_live,
                        std::optional<cql3::expr::expression>&& timeout,
-                       std::optional<sstring> service_level)
+                       std::optional<sstring> service_level,
+                       std::optional<cql3::expr::expression>&& concurrency)
     : _timestamp_unset_guard(timestamp)
     , _timestamp{std::move(timestamp)}
     , _time_to_live_unset_guard(time_to_live)
     , _time_to_live{std::move(time_to_live)}
     , _timeout{std::move(timeout)}
     , _service_level(std::move(service_level))
+    , _concurrency{std::move(concurrency)}
 { }
 
 bool attributes::is_timestamp_set() const {
@@ -51,6 +53,10 @@ bool attributes::is_service_level_set() const {
     return bool(_service_level);
 }
 
+bool attributes::is_concurrency_set() const {
+    return bool(_concurrency);
+}
+
 int64_t attributes::get_timestamp(int64_t now, const query_options& options) {
     if (!_timestamp.has_value() || _timestamp_unset_guard.is_unset(options)) {
         return now;
@@ -123,6 +129,27 @@ qos::service_level_options attributes::get_service_level(qos::service_level_cont
     return sl_controller.get_service_level(sl_name).slo;
 }
 
+std::optional<int32_t> attributes::get_concurrency(const query_options& options) const {
+    if (!_concurrency.has_value()) {
+        return std::nullopt;
+    }
+
+    cql3::raw_value concurrency_raw = expr::evaluate(*_concurrency, options);
+    if (concurrency_raw.is_null()) {
+        throw exceptions::invalid_request_exception("Invalid null value of concurrency");
+    }
+    int32_t concurrency;
+    try {
+        concurrency = concurrency_raw.view().validate_and_deserialize<int32_t>(*int32_type);
+    } catch (marshal_exception& e) {
+        throw exceptions::invalid_request_exception("Invalid concurrency value");
+    }
+    if (concurrency <= 0) {
+        throw exceptions::invalid_request_exception("Concurrency must be a positive integer");
+    }
+    return concurrency;
+}
+
 void attributes::fill_prepare_context(prepare_context& ctx) {
     if (_timestamp.has_value()) {
         expr::fill_prepare_context(*_timestamp, ctx);
@@ -133,10 +160,13 @@ void attributes::fill_prepare_context(prepare_context& ctx) {
     if (_timeout.has_value()) {
         expr::fill_prepare_context(*_timeout, ctx);
     }
+    if (_concurrency.has_value()) {
+        expr::fill_prepare_context(*_concurrency, ctx);
+    }
 }
 
 std::unique_ptr<attributes> attributes::raw::prepare(data_dictionary::database db, const sstring& ks_name, const sstring& cf_name) const {
-    std::optional<expr::expression> ts, ttl, to;
+    std::optional<expr::expression> ts, ttl, to, conc;
 
     if (timestamp.has_value()) {
         ts = prepare_expression(*timestamp, db, ks_name, nullptr, timestamp_receiver(ks_name, cf_name));
@@ -153,7 +183,12 @@ std::unique_ptr<attributes> attributes::raw::prepare(data_dictionary::database d
         verify_no_aggregate_functions(*timeout, "USING clause");
     }
 
-    return std::unique_ptr<attributes>{new attributes{std::move(ts), std::move(ttl), std::move(to), std::move(service_level)}};
+    if (concurrency.has_value()) {
+        conc = prepare_expression(*concurrency, db, ks_name, nullptr, concurrency_receiver(ks_name, cf_name));
+        verify_no_aggregate_functions(*concurrency, "USING clause");
+    }
+
+    return std::unique_ptr<attributes>{new attributes{std::move(ts), std::move(ttl), std::move(to), std::move(service_level), std::move(conc)}};
 }
 
 lw_shared_ptr<column_specification> attributes::raw::timestamp_receiver(const sstring& ks_name, const sstring& cf_name) const {
@@ -168,4 +203,8 @@ lw_shared_ptr<column_specification> attributes::raw::timeout_receiver(const sstr
     return make_lw_shared<column_specification>(ks_name, cf_name, ::make_shared<column_identifier>("[timeout]", true), duration_type);
 }
 
+lw_shared_ptr<column_specification> attributes::raw::concurrency_receiver(const sstring& ks_name, const sstring& cf_name) const {
+    return make_lw_shared<column_specification>(ks_name, cf_name, ::make_shared<column_identifier>("[concurrency]", true), data_type_for<int32_t>());
+}
+
 }

cql3/attributes.hh

@@ -36,13 +36,15 @@ private:
     std::optional<cql3::expr::expression> _time_to_live;
     std::optional<cql3::expr::expression> _timeout;
     std::optional<sstring> _service_level;
+    std::optional<cql3::expr::expression> _concurrency;
 public:
     static std::unique_ptr<attributes> none();
 private:
     attributes(std::optional<cql3::expr::expression>&& timestamp,
                std::optional<cql3::expr::expression>&& time_to_live,
                std::optional<cql3::expr::expression>&& timeout,
-               std::optional<sstring> service_level);
+               std::optional<sstring> service_level,
+               std::optional<cql3::expr::expression>&& concurrency);
 public:
     bool is_timestamp_set() const;
 
@@ -52,6 +54,8 @@ public:
 
     bool is_service_level_set() const;
 
+    bool is_concurrency_set() const;
+
     int64_t get_timestamp(int64_t now, const query_options& options);
 
     std::optional<int32_t> get_time_to_live(const query_options& options);
@@ -60,6 +64,8 @@ public:
 
     qos::service_level_options get_service_level(qos::service_level_controller& sl_controller) const;
 
+    std::optional<int32_t> get_concurrency(const query_options& options) const;
+
     void fill_prepare_context(prepare_context& ctx);
 
     class raw final {
@@ -68,6 +74,7 @@ public:
         std::optional<cql3::expr::expression> time_to_live;
         std::optional<cql3::expr::expression> timeout;
         std::optional<sstring> service_level;
+        std::optional<cql3::expr::expression> concurrency;
 
         std::unique_ptr<attributes> prepare(data_dictionary::database db, const sstring& ks_name, const sstring& cf_name) const;
     private:
@@ -76,6 +83,8 @@ public:
         lw_shared_ptr<column_specification> time_to_live_receiver(const sstring& ks_name, const sstring& cf_name) const;
 
         lw_shared_ptr<column_specification> timeout_receiver(const sstring& ks_name, const sstring& cf_name) const;
+
+        lw_shared_ptr<column_specification> concurrency_receiver(const sstring& ks_name, const sstring& cf_name) const;
     };
 };
 

cql3/statements/alter_keyspace_statement.cc

@@ -165,8 +165,7 @@ cql3::statements::alter_keyspace_statement::prepare_schema_mutations(query_proce
 
             service::topology_mutation_builder builder(ts);
             service::topology_request_tracking_mutation_builder rtbuilder{global_request_id, qp.proxy().features().topology_requests_type_column};
-            rtbuilder.set("done", false)
-                     .set("start_time", db_clock::now());
+            rtbuilder.set("done", false);
             if (!qp.proxy().features().topology_global_request_queue) {
                 builder.set_global_topology_request(service::global_topology_request::keyspace_rf_change);
                 builder.set_global_topology_request_id(global_request_id);

cql3/statements/batch_statement.cc

@@ -331,7 +331,7 @@ future<shared_ptr<cql_transport::messages::result_message>> batch_statement::exe
     if (!cl_for_paxos) [[unlikely]] {
         return make_exception_future<shared_ptr<cql_transport::messages::result_message>>(std::move(cl_for_paxos).assume_error());
     }
-    seastar::shared_ptr<cas_request> request;
+    std::unique_ptr<cas_request> request;
     schema_ptr schema;
 
     db::timeout_clock::time_point now = db::timeout_clock::now();
@@ -354,9 +354,9 @@ future<shared_ptr<cql_transport::messages::result_message>> batch_statement::exe
         if (keys.empty()) {
             continue;
         }
-        if (request.get() == nullptr) {
+        if (!request) {
             schema = statement.s;
-            request = seastar::make_shared<cas_request>(schema, std::move(keys));
+            request = std::make_unique<cas_request>(schema, std::move(keys));
         } else if (keys.size() != 1 || keys.front().equal(request->key().front(), dht::ring_position_comparator(*schema)) == false) {
             throw exceptions::invalid_request_exception("BATCH with conditions cannot span multiple partitions");
         }
@@ -366,7 +366,7 @@ future<shared_ptr<cql_transport::messages::result_message>> batch_statement::exe
 
         request->add_row_update(statement, std::move(ranges), std::move(json_cache), statement_options);
     }
-    if (request.get() == nullptr) {
+    if (!request) {
         throw exceptions::invalid_request_exception(format("Unrestricted partition key in a conditional BATCH"));
     }
 
@@ -377,9 +377,10 @@ future<shared_ptr<cql_transport::messages::result_message>> batch_statement::exe
             );
     }
 
-    return qp.proxy().cas(schema, std::move(cas_shard), request, request->read_command(qp), request->key(),
+    auto* request_ptr = request.get();
+    return qp.proxy().cas(schema, std::move(cas_shard), *request_ptr, request->read_command(qp), request->key(),
             {read_timeout, qs.get_permit(), qs.get_client_state(), qs.get_trace_state()},
-            std::move(cl_for_paxos).assume_value(), cl_for_learn, batch_timeout, cas_timeout).then([this, request] (bool is_applied) {
+            std::move(cl_for_paxos).assume_value(), cl_for_learn, batch_timeout, cas_timeout).then([this, request = std::move(request)] (bool is_applied) {
         return request->build_cas_result_set(_metadata, _columns_of_cas_result_set, is_applied);
     });
 }

cql3/statements/create_index_statement.cc

@@ -279,11 +279,15 @@ std::vector<::shared_ptr<index_target>> create_index_statement::validate_while_e
         throw exceptions::invalid_request_exception(format("index names shouldn't be more than {:d} characters long (got \"{}\")", schema::NAME_LENGTH, _index_name.c_str()));
     }
 
-    try {
-        db::view::validate_view_keyspace(db, keyspace());
-    } catch (const std::exception& e) {
-        // The type of the thrown exception is not specified, so we need to wrap it here.
-        throw exceptions::invalid_request_exception(e.what());
+    // Regular secondary indexes require rf-rack-validity.
+    // Custom indexes need to validate this property themselves, if they need it.
+    if (!_properties || !_properties->custom_class) {
+        try {
+            db::view::validate_view_keyspace(db, keyspace());
+        } catch (const std::exception& e) {
+            // The type of the thrown exception is not specified, so we need to wrap it here.
+            throw exceptions::invalid_request_exception(e.what());
+        }
     }
 
     validate_for_local_index(*schema);

cql3/statements/modification_statement.cc

@@ -401,7 +401,8 @@ modification_statement::execute_with_condition(query_processor& qp, service::que
                     type.is_update() ? "update" : "deletion"));
     }
 
-    auto request = seastar::make_shared<cas_request>(s, std::move(keys));
+    auto request = std::make_unique<cas_request>(s, std::move(keys));
+    auto* request_ptr = request.get();
     // cas_request can be used for batches as well single statements; Here we have just a single
     // modification in the list of CAS commands, since we're handling single-statement execution.
     request->add_row_update(*this, std::move(ranges), std::move(json_cache), options);
@@ -427,9 +428,9 @@ modification_statement::execute_with_condition(query_processor& qp, service::que
         tablet_info = erm->check_locality(token);
     }
 
-    return qp.proxy().cas(s, std::move(cas_shard), request, request->read_command(qp), request->key(),
+    return qp.proxy().cas(s, std::move(cas_shard), *request_ptr, request->read_command(qp), request->key(),
             {read_timeout, qs.get_permit(), qs.get_client_state(), qs.get_trace_state()},
-            std::move(cl_for_paxos).assume_value(), cl_for_learn, statement_timeout, cas_timeout).then([this, request, tablet_replicas = std::move(tablet_info->tablet_replicas), token_range = tablet_info->token_range] (bool is_applied) {
+            std::move(cl_for_paxos).assume_value(), cl_for_learn, statement_timeout, cas_timeout).then([this, request = std::move(request), tablet_replicas = std::move(tablet_info->tablet_replicas), token_range = tablet_info->token_range] (bool is_applied) {
         auto result = request->build_cas_result_set(_metadata, _columns_of_cas_result_set, is_applied);
         result->add_tablet_info(tablet_replicas, token_range);
         return result;

cql3/statements/prune_materialized_view_statement.cc

@@ -21,7 +21,7 @@ namespace cql3 {
 namespace statements {
 
 static future<> delete_ghost_rows(dht::partition_range_vector partition_ranges, std::vector<query::clustering_range> clustering_bounds, view_ptr view,
-        service::storage_proxy& proxy, service::query_state& state, const query_options& options, cql_stats& stats, db::timeout_clock::duration timeout_duration) {
+        service::storage_proxy& proxy, service::query_state& state, const query_options& options, cql_stats& stats, db::timeout_clock::duration timeout_duration, size_t concurrency) {
     auto key_columns = std::ranges::to<std::vector<const column_definition*>>(
         view->all_columns()
         | std::views::filter([] (const column_definition& cdef) { return cdef.is_primary_key(); })
@@ -35,7 +35,7 @@ static future<> delete_ghost_rows(dht::partition_range_vector partition_ranges,
     tracing::trace(state.get_trace_state(), "Deleting ghost rows from partition ranges {}", partition_ranges);
 
     auto p = service::pager::query_pagers::ghost_row_deleting_pager(schema_ptr(view), selection, state,
-            options, std::move(command), std::move(partition_ranges), stats, proxy, timeout_duration);
+            options, std::move(command), std::move(partition_ranges), stats, proxy, timeout_duration, concurrency);
 
     int32_t page_size = std::max(options.get_page_size(), 1000);
     auto now = gc_clock::now();
@@ -62,7 +62,8 @@ future<::shared_ptr<cql_transport::messages::result_message>> prune_materialized
     auto timeout_duration = get_timeout(state.get_client_state(), options);
     dht::partition_range_vector key_ranges = _restrictions->get_partition_key_ranges(options);
     std::vector<query::clustering_range> clustering_bounds = _restrictions->get_clustering_bounds(options);
-    return delete_ghost_rows(std::move(key_ranges), std::move(clustering_bounds), view_ptr(_schema), qp.proxy(), state, options, _stats, timeout_duration).then([] {
+    size_t concurrency = _attrs->is_concurrency_set() ? _attrs->get_concurrency(options).value() : 1;
+    return delete_ghost_rows(std::move(key_ranges), std::move(clustering_bounds), view_ptr(_schema), qp.proxy(), state, options, _stats, timeout_duration, concurrency).then([] {
         return make_ready_future<::shared_ptr<cql_transport::messages::result_message>>(::make_shared<cql_transport::messages::result_message::void_message>());
     });
 }

db/CMakeLists.txt

@@ -10,7 +10,6 @@ target_sources(db
     schema_applier.cc
     schema_tables.cc
     cql_type_parser.cc
-    legacy_schema_migrator.cc
     commitlog/commitlog.cc
     commitlog/commitlog_replayer.cc
     commitlog/commitlog_entry.cc

db/config.cc

@@ -1172,6 +1172,17 @@ db::config::config(std::shared_ptr<db::extensions> exts)
         "* default_weight: (Default: 1 **)  How many requests are handled during each turn of the RoundRobin.\n"
         "* weights: (Default: Keyspace: 1)  Takes a list of keyspaces. It sets how many requests are handled during each turn of the RoundRobin, based on the request_scheduler_id.")
     /**
+    * @Group Vector search settings
+    * @GroupDescription Settings for configuring and tuning vector search functionality.
+    */
+    , vector_store_primary_uri(this, "vector_store_primary_uri", liveness::LiveUpdate, value_status::Used, "",
+        "A comma-separated list of primary vector store node URIs. These nodes are preferred for vector search operations.")
+    , vector_store_secondary_uri(this, "vector_store_secondary_uri", liveness::LiveUpdate, value_status::Used, "",
+        "A comma-separated list of secondary vector store node URIs. These nodes are used as a fallback when all primary nodes are unavailable, and are typically located in a different availability zone for high availability.")
+    , vector_store_encryption_options(this, "vector_store_encryption_options", value_status::Used, {},
+        "Options for encrypted connections to the vector store. These options are used for HTTPS URIs in `vector_store_primary_uri` and `vector_store_secondary_uri`. The available options are:\n"
+        "* truststore: (Default: <not set, use system truststore>) Location of the truststore containing the trusted certificate for authenticating remote servers.")
+    /**
     * @Group Security properties
     * @GroupDescription Server and client security settings.
     */
@@ -1459,13 +1470,6 @@ db::config::config(std::shared_ptr<db::extensions> exts)
     , alternator_max_expression_cache_entries_per_shard(this, "alternator_max_expression_cache_entries_per_shard", liveness::LiveUpdate, value_status::Used, 2000, "Maximum number of cached parsed request expressions, per shard.")
     , alternator_max_users_query_size_in_trace_output(this, "alternator_max_users_query_size_in_trace_output", liveness::LiveUpdate, value_status::Used, uint64_t(4096),
             "Maximum size of user's command in trace output (`alternator_op` entry). Larger traces will be truncated and have `<truncated>` message appended - which doesn't count to the maximum limit.")
-    , vector_store_primary_uri(
-              this, "vector_store_primary_uri", liveness::LiveUpdate, value_status::Used, "", "A comma-separated list of primary vector store node URIs. These nodes are preferred for vector search operations.")
-    , vector_store_secondary_uri(this, "vector_store_secondary_uri", liveness::LiveUpdate, value_status::Used, "",
-              "A comma-separated list of secondary vector store node URIs. These nodes are used as a fallback when all primary nodes are unavailable, and are typically located in a different availability zone for high availability.")
-    , vector_store_encryption_options(this, "vector_store_encryption_options", value_status::Used, {},
-        "Options for encrypted connections to the vector store. These options are used for HTTPS URIs in vector_store_primary_uri and vector_store_secondary_uri. The available options are:\n"
-        "* truststore: (Default: <not set. use system truststore>) Location of the truststore containing the trusted certificate for authenticating remote servers.")
     , abort_on_ebadf(this, "abort_on_ebadf", value_status::Used, true, "Abort the server on incorrect file descriptor access. Throws exception when disabled.")
     , sanitizer_report_backtrace(this, "sanitizer_report_backtrace", value_status::Used, false,
             "In debug mode, report log-structured allocator sanitizer violations with a backtrace. Slow.")

db/config.hh

@@ -344,6 +344,9 @@ public:
     named_value<sstring> request_scheduler;
     named_value<sstring> request_scheduler_id;
     named_value<string_map> request_scheduler_options;
+    named_value<sstring> vector_store_primary_uri;
+    named_value<sstring> vector_store_secondary_uri;
+    named_value<string_map> vector_store_encryption_options;
     named_value<sstring> authenticator;
     named_value<sstring> internode_authenticator;
     named_value<sstring> authorizer;
@@ -471,10 +474,6 @@ public:
     named_value<uint32_t> alternator_max_expression_cache_entries_per_shard;
     named_value<uint64_t> alternator_max_users_query_size_in_trace_output;
 
-    named_value<sstring> vector_store_primary_uri;
-    named_value<sstring> vector_store_secondary_uri;
-    named_value<string_map> vector_store_encryption_options;
-
     named_value<bool> abort_on_ebadf;
 
     named_value<bool> sanitizer_report_backtrace;

db/legacy_schema_migrator.cc

@@ -1,602 +0,0 @@
-/*
- * Modified by ScyllaDB
- * Copyright (C) 2017-present ScyllaDB
- */
-
-/*
- * SPDX-License-Identifier: (LicenseRef-ScyllaDB-Source-Available-1.0 and Apache-2.0)
- */
-
-// Since Scylla 2.0, we use system tables whose schemas were introduced in
-// Cassandra 3. If Scylla boots to find a data directory with system tables
-// with older schemas - produced by pre-2.0 Scylla or by pre-3.0 Cassandra,
-// we need to migrate these old tables to the new format.
-//
-// We provide here a function, db::legacy_schema_migrator::migrate(),
-// for a one-time migration from old to new system tables. The function
-// reads old system tables, write them back in the new format, and finally
-// delete the old system tables. Scylla's main should call this function and
-// wait for the returned future, before starting to serve the database.
-
-#include <boost/iterator/filter_iterator.hpp>
-#include <seastar/core/future-util.hh>
-#include <seastar/util/log.hh>
-#include <map>
-#include <unordered_set>
-#include <chrono>
-
-#include "replica/database.hh"
-#include "legacy_schema_migrator.hh"
-#include "system_keyspace.hh"
-#include "schema_tables.hh"
-#include "schema/schema_builder.hh"
-#include "service/storage_proxy.hh"
-#include "utils/rjson.hh"
-#include "cql3/query_processor.hh"
-#include "cql3/untyped_result_set.hh"
-#include "cql3/util.hh"
-#include "cql3/statements/property_definitions.hh"
-
-static seastar::logger mlogger("legacy_schema_migrator");
-
-namespace db {
-namespace legacy_schema_migrator {
-
-// local data carriers
-
-class migrator {
-public:
-    static const std::unordered_set<sstring> legacy_schema_tables;
-
-    migrator(sharded<service::storage_proxy>& sp, sharded<replica::database>& db, sharded<db::system_keyspace>& sys_ks, cql3::query_processor& qp)
-                    : _sp(sp), _db(db), _sys_ks(sys_ks), _qp(qp) {
-    }
-    migrator(migrator&&) = default;
-
-    typedef db_clock::time_point time_point;
-
-    // TODO: we don't support triggers.
-    // this is a placeholder.
-    struct trigger {
-        time_point timestamp;
-        sstring name;
-        std::unordered_map<sstring, sstring> options;
-    };
-
-    struct table {
-        time_point timestamp;
-        schema_ptr metadata;
-        std::vector<trigger> triggers;
-    };
-
-    struct type {
-        time_point timestamp;
-        user_type metadata;
-    };
-
-    struct function {
-        time_point timestamp;
-        sstring ks_name;
-        sstring fn_name;
-        std::vector<sstring> arg_names;
-        std::vector<sstring> arg_types;
-        sstring return_type;
-        bool called_on_null_input;
-        sstring language;
-        sstring body;
-    };
-
-    struct aggregate {
-        time_point timestamp;
-        sstring ks_name;
-        sstring fn_name;
-        std::vector<sstring> arg_names;
-        std::vector<sstring> arg_types;
-        sstring return_type;
-        sstring final_func;
-        sstring initcond;
-        sstring state_func;
-        sstring state_type;
-    };
-
-    struct keyspace {
-        time_point timestamp;
-        sstring name;
-        bool durable_writes;
-        std::map<sstring, sstring> replication_params;
-
-        std::vector<table> tables;
-        std::vector<type> types;
-        std::vector<function> functions;
-        std::vector<aggregate> aggregates;
-    };
-
-    class unsupported_feature : public std::runtime_error {
-    public:
-        using runtime_error::runtime_error;
-    };
-
-    static sstring fmt_query(const char* fmt, const char* table) {
-        return fmt::format(fmt::runtime(fmt), db::system_keyspace::NAME, table);
-    }
-
-    typedef ::shared_ptr<cql3::untyped_result_set> result_set_type;
-    typedef const cql3::untyped_result_set::row row_type;
-
-    future<> read_table(keyspace& dst, sstring cf_name, time_point timestamp) {
-        auto fmt = "SELECT * FROM {}.{} WHERE keyspace_name = ? AND columnfamily_name = ?";
-        auto tq = fmt_query(fmt, db::system_keyspace::legacy::COLUMNFAMILIES);
-        auto cq = fmt_query(fmt, db::system_keyspace::legacy::COLUMNS);
-        auto zq = fmt_query(fmt, db::system_keyspace::legacy::TRIGGERS);
-
-        typedef std::tuple<future<result_set_type>, future<result_set_type>, future<result_set_type>, future<db::schema_tables::legacy::schema_mutations>> result_tuple;
-
-        return when_all(_qp.execute_internal(tq, { dst.name, cf_name }, cql3::query_processor::cache_internal::yes),
-                        _qp.execute_internal(cq, { dst.name, cf_name }, cql3::query_processor::cache_internal::yes),
-                        _qp.execute_internal(zq, { dst.name, cf_name }, cql3::query_processor::cache_internal::yes),
-                        db::schema_tables::legacy::read_table_mutations(_sp, dst.name, cf_name, db::system_keyspace::legacy::column_families()))
-                    .then([&dst, cf_name, timestamp](result_tuple&& t) {
-
-            result_set_type tables = std::get<0>(t).get();
-            result_set_type columns = std::get<1>(t).get();
-            result_set_type triggers = std::get<2>(t).get();
-            db::schema_tables::legacy::schema_mutations sm = std::get<3>(t).get();
-
-            row_type& td = tables->one();
-
-            auto ks_name = td.get_as<sstring>("keyspace_name");
-            auto cf_name = td.get_as<sstring>("columnfamily_name");
-            auto id = table_id(td.get_or("cf_id", generate_legacy_id(ks_name, cf_name).uuid()));
-
-            schema_builder builder(dst.name, cf_name, id);
-
-            builder.with_version(sm.digest());
-
-            cf_type cf = sstring_to_cf_type(td.get_or("type", sstring("standard")));
-            if (cf == cf_type::super) {
-                fail(unimplemented::cause::SUPER);
-            }
-
-            auto comparator = td.get_as<sstring>("comparator");
-            bool is_compound = cell_comparator::check_compound(comparator);
-            builder.set_is_compound(is_compound);
-            cell_comparator::read_collections(builder, comparator);
-
-            bool filter_sparse = false;
-
-            data_type default_validator = {};
-            if (td.has("default_validator")) {
-                default_validator = db::schema_tables::parse_type(td.get_as<sstring>("default_validator"));
-                if (default_validator->is_counter()) {
-                    builder.set_is_counter(true);
-                }
-                builder.set_default_validation_class(default_validator);
-            }
-
-            /*
-             * Determine whether or not the table is *really* dense
-             * We cannot trust is_dense value of true (see CASSANDRA-11502, that fixed the issue for 2.2 only, and not retroactively),
-             * but we can trust is_dense value of false.
-             */
-            auto is_dense = td.get_opt<bool>("is_dense");
-            if (!is_dense || *is_dense) {
-                is_dense = [&] {
-                    /*
-                     * As said above, this method is only here because we need to deal with thrift upgrades.
-                     * Once a CF has been "upgraded", i.e. we've rebuilt and save its CQL3 metadata at least once,
-                     * then we'll have saved the "is_dense" value and will be good to go.
-                     *
-                     * But non-upgraded thrift CF (and pre-7744 CF) will have no value for "is_dense", so we need
-                     * to infer that information without relying on it in that case. And for the most part this is
-                     * easy, a CF that has at least one REGULAR definition is not dense. But the subtlety is that not
-                     * having a REGULAR definition may not mean dense because of CQL3 definitions that have only the
-                     * PRIMARY KEY defined.
-                     *
-                     * So we need to recognize those special case CQL3 table with only a primary key. If we have some
-                     * clustering columns, we're fine as said above. So the only problem is that we cannot decide for
-                     * sure if a CF without REGULAR columns nor CLUSTERING_COLUMN definition is meant to be dense, or if it
-                     * has been created in CQL3 by say:
-                     *    CREATE TABLE test (k int PRIMARY KEY)
-                     * in which case it should not be dense. However, we can limit our margin of error by assuming we are
-                     * in the latter case only if the comparator is exactly CompositeType(UTF8Type).
-                     */
-                    std::optional<column_id> max_cl_idx;
-                    const cql3::untyped_result_set::row * regular = nullptr;
-                    for (auto& row : *columns) {
-                        auto kind_str = row.get_as<sstring>("type");
-                        if (kind_str == "compact_value") {
-                            continue;
-                        }
-
-                        auto kind = db::schema_tables::deserialize_kind(kind_str);
-
-                        if (kind == column_kind::regular_column) {
-                            if (regular != nullptr) {
-                                return false;
-                            }
-                            regular = &row;
-                            continue;
-                        }
-                        if (kind == column_kind::clustering_key) {
-                            max_cl_idx = std::max(column_id(row.get_or("component_index", 0)), max_cl_idx.value_or(column_id()));
-                        }
-                    }
-
-                    auto is_cql3_only_pk_comparator = [](const sstring& comparator) {
-                        if (!cell_comparator::check_compound(comparator)) {
-                            return false;
-                        }
-                        // CMH. We don't have composites, nor a parser for it. This is a simple way of c
-                        // checking the same.
-                        auto comma = comparator.find(',');
-                        if (comma != sstring::npos) {
-                            return false;
-                        }
-                        auto off = comparator.find('(');
-                        auto end = comparator.find(')');
-
-                        return comparator.compare(off, end - off, utf8_type->name()) == 0;
-                    };
-
-                    if (max_cl_idx) {
-                        auto n = std::count(comparator.begin(), comparator.end(), ','); // num comp - 1
-                        return *max_cl_idx == n;
-                    }
-
-                    if (regular) {
-                        return false;
-                    }
-
-                    return !is_cql3_only_pk_comparator(comparator);
-
-                }();
-
-                // now, if switched to sparse, remove redundant compact_value column and the last clustering column,
-                // directly copying CASSANDRA-11502 logic. See CASSANDRA-11315.
-
-                filter_sparse = !*is_dense;
-            }
-            builder.set_is_dense(*is_dense);
-
-            auto is_cql = !*is_dense && is_compound;
-            auto is_static_compact = !*is_dense && !is_compound;
-
-            // org.apache.cassandra.schema.LegacySchemaMigrator#isEmptyCompactValueColumn
-            auto is_empty_compact_value = [](const cql3::untyped_result_set::row& column_row) {
-                auto kind_str = column_row.get_as<sstring>("type");
-                // Cassandra only checks for "compact_value", but Scylla generates "regular" instead (#2586)
-                return (kind_str == "compact_value" || kind_str == "regular")
-                       && column_row.get_as<sstring>("column_name").empty();
-            };
-
-            for (auto& row : *columns) {
-                auto kind_str = row.get_as<sstring>("type");
-                auto kind = db::schema_tables::deserialize_kind(kind_str);
-                auto component_index = kind > column_kind::clustering_key ? 0 : column_id(row.get_or("component_index", 0));
-                auto name = row.get_or<sstring>("column_name", sstring());
-                auto validator = db::schema_tables::parse_type(row.get_as<sstring>("validator"));
-
-                if (is_empty_compact_value(row)) {
-                    continue;
-                }
-
-                if (filter_sparse) {
-                    if (kind_str == "compact_value") {
-                        continue;
-                    }
-                    if (kind == column_kind::clustering_key) {
-                        if (cf == cf_type::super && component_index != 0) {
-                            continue;
-                        }
-                        if (cf != cf_type::super && !is_compound) {
-                            continue;
-                        }
-                    }
-                }
-
-                std::optional<index_metadata_kind> index_kind;
-                sstring index_name;
-                index_options_map options;
-                if (row.has("index_type")) {
-                    index_kind = schema_tables::deserialize_index_kind(row.get_as<sstring>("index_type"));
-                }
-                if (row.has("index_name")) {
-                    index_name = row.get_as<sstring>("index_name");
-                }
-                if (row.has("index_options")) {
-                    sstring index_options_str = row.get_as<sstring>("index_options");
-                    options = rjson::parse_to_map<index_options_map>(std::string_view(index_options_str));
-                    sstring type;
-                    auto i = options.find("index_keys");
-                    if (i != options.end()) {
-                        options.erase(i);
-                        type = "KEYS";
-                    }
-                    i = options.find("index_keys_and_values");
-                    if (i != options.end()) {
-                        options.erase(i);
-                        type = "KEYS_AND_VALUES";
-                    }
-                    if (type.empty()) {
-                        if (validator->is_collection() && validator->is_multi_cell()) {
-                            type = "FULL";
-                        } else {
-                            type = "VALUES";
-                        }
-                    }
-                    auto column = cql3::util::maybe_quote(name);
-                    options["target"] = validator->is_collection()
-                                    ? type + "(" + column + ")"
-                                    : column;
-                }
-                if (index_kind) {
-                    // Origin assumes index_name is always set, so let's do the same
-                    builder.with_index(index_metadata(index_name, options, *index_kind, index_metadata::is_local_index::no));
-                }
-
-                data_type column_name_type = [&] {
-                    if (is_static_compact && kind == column_kind::regular_column) {
-                        return db::schema_tables::parse_type(comparator);
-                    }
-                    return utf8_type;
-                }();
-                auto column_name = [&] {
-                    try {
-                        return column_name_type->from_string(name);
-                    } catch (marshal_exception&) {
-                        // #2597: Scylla < 2.0 writes names in serialized form, try to recover
-                        column_name_type->validate(to_bytes_view(name));
-                        return to_bytes(name);
-                    }
-                }();
-                builder.with_column_ordered(column_definition(std::move(column_name), std::move(validator), kind, component_index));
-            }
-
-            if (is_static_compact) {
-                builder.set_regular_column_name_type(db::schema_tables::parse_type(comparator));
-            }
-
-            if (td.has("gc_grace_seconds")) {
-                builder.set_gc_grace_seconds(td.get_as<int32_t>("gc_grace_seconds"));
-            }
-            if (td.has("min_compaction_threshold")) {
-                builder.set_min_compaction_threshold(td.get_as<int32_t>("min_compaction_threshold"));
-            }
-            if (td.has("max_compaction_threshold")) {
-                builder.set_max_compaction_threshold(td.get_as<int32_t>("max_compaction_threshold"));
-            }
-            if (td.has("comment")) {
-                builder.set_comment(td.get_as<sstring>("comment"));
-            }
-            if (td.has("memtable_flush_period_in_ms")) {
-                builder.set_memtable_flush_period(td.get_as<int32_t>("memtable_flush_period_in_ms"));
-            }
-            if (td.has("caching")) {
-                builder.set_caching_options(caching_options::from_sstring(td.get_as<sstring>("caching")));
-            }
-            if (td.has("default_time_to_live")) {
-                builder.set_default_time_to_live(gc_clock::duration(td.get_as<int32_t>("default_time_to_live")));
-            }
-            if (td.has("speculative_retry")) {
-                builder.set_speculative_retry(td.get_as<sstring>("speculative_retry"));
-            }
-            if (td.has("compaction_strategy_class")) {
-                auto strategy = td.get_as<sstring>("compaction_strategy_class");
-                try {
-                    builder.set_compaction_strategy(compaction::compaction_strategy::type(strategy));
-                } catch (const exceptions::configuration_exception& e) {
-                    // If compaction strategy class isn't supported, fallback to incremental.
-                    mlogger.warn("Falling back to incremental compaction strategy after the problem: {}", e.what());
-                    builder.set_compaction_strategy(compaction::compaction_strategy_type::incremental);
-                }
-            }
-            if (td.has("compaction_strategy_options")) {
-                sstring strategy_options_str = td.get_as<sstring>("compaction_strategy_options");
-                builder.set_compaction_strategy_options(rjson::parse_to_map<std::map<sstring, sstring>>(std::string_view(strategy_options_str)));
-            }
-            auto comp_param = td.get_as<sstring>("compression_parameters");
-            compression_parameters cp(rjson::parse_to_map<std::map<sstring, sstring>>(std::string_view(comp_param)));
-            builder.set_compressor_params(cp);
-
-            if (td.has("min_index_interval")) {
-                builder.set_min_index_interval(td.get_as<int32_t>("min_index_interval"));
-            } else if (td.has("index_interval")) { // compatibility
-                builder.set_min_index_interval(td.get_as<int32_t>("index_interval"));
-            }
-            if (td.has("max_index_interval")) {
-                builder.set_max_index_interval(td.get_as<int32_t>("max_index_interval"));
-            }
-            if (td.has("bloom_filter_fp_chance")) {
-                builder.set_bloom_filter_fp_chance(td.get_as<double>("bloom_filter_fp_chance"));
-            } else {
-                builder.set_bloom_filter_fp_chance(builder.get_bloom_filter_fp_chance());
-            }
-            if (td.has("dropped_columns")) {
-                auto map = td.get_map<sstring, int64_t>("dropped_columns");
-                for (auto&& e : map) {
-                    builder.without_column(e.first, api::timestamp_type(e.second));
-                };
-            }
-
-            // ignore version. we're transient
-            if (!triggers->empty()) {
-                throw unsupported_feature("triggers");
-            }
-
-            dst.tables.emplace_back(table{timestamp, builder.build() });
-        });
-    }
-
-    future<> read_tables(keyspace& dst) {
-        auto query = fmt_query("SELECT columnfamily_name, writeTime(type) AS timestamp FROM {}.{} WHERE keyspace_name = ?",
-                        db::system_keyspace::legacy::COLUMNFAMILIES);
-        return _qp.execute_internal(query, {dst.name}, cql3::query_processor::cache_internal::yes).then([this, &dst](result_set_type result) {
-            return parallel_for_each(*result, [this, &dst](row_type& row) {
-                return read_table(dst, row.get_as<sstring>("columnfamily_name"), row.get_as<time_point>("timestamp"));
-            }).finally([result] {});
-        });
-    }
-
-    future<time_point> read_type_timestamp(keyspace& dst, sstring type_name) {
-        // TODO: Unfortunately there is not a single REGULAR column in system.schema_usertypes, so annoyingly we cannot
-        // use the writeTime() CQL function, and must resort to a lower level.
-        // Origin digs up the actual cells of target partition and gets timestamp from there.
-        // We should do the same, but g-dam that's messy. Lets give back dung value for now.
-        return make_ready_future<time_point>(dst.timestamp);
-    }
-
-    future<> read_types(keyspace& dst) {
-        auto query = fmt_query("SELECT * FROM {}.{} WHERE keyspace_name = ?", db::system_keyspace::legacy::USERTYPES);
-        return _qp.execute_internal(query, {dst.name}, cql3::query_processor::cache_internal::yes).then([this, &dst](result_set_type result) {
-            return parallel_for_each(*result, [this, &dst](row_type& row) {
-                auto name = row.get_blob_unfragmented("type_name");
-                auto columns = row.get_list<bytes>("field_names");
-                auto types = row.get_list<sstring>("field_types");
-                std::vector<data_type> field_types;
-                for (auto&& value : types) {
-                    field_types.emplace_back(db::schema_tables::parse_type(value));
-                }
-                auto ut = user_type_impl::get_instance(dst.name, name, columns, field_types, false);
-                return read_type_timestamp(dst, value_cast<sstring>(utf8_type->deserialize(name))).then([ut = std::move(ut), &dst](time_point timestamp) {
-                    dst.types.emplace_back(type{timestamp, ut});
-                });
-            }).finally([result] {});
-        });
-    }
-
-    future<> read_functions(keyspace& dst) {
-        auto query = fmt_query("SELECT * FROM {}.{} WHERE keyspace_name = ?", db::system_keyspace::legacy::FUNCTIONS);
-        return _qp.execute_internal(query, {dst.name}, cql3::query_processor::cache_internal::yes).then([](result_set_type result) {
-            if (!result->empty()) {
-                throw unsupported_feature("functions");
-            }
-        });
-    }
-
-    future<> read_aggregates(keyspace& dst) {
-        auto query = fmt_query("SELECT * FROM {}.{} WHERE keyspace_name = ?", db::system_keyspace::legacy::AGGREGATES);
-        return _qp.execute_internal(query, {dst.name}, cql3::query_processor::cache_internal::yes).then([](result_set_type result) {
-            if (!result->empty()) {
-                throw unsupported_feature("aggregates");
-            }
-        });
-    }
-
-    future<keyspace> read_keyspace(sstring ks_name, bool durable_writes, sstring strategy_class, sstring strategy_options, time_point timestamp) {
-        auto map = rjson::parse_to_map<std::map<sstring, sstring>>(std::string_view(strategy_options));
-        map.emplace("class", std::move(strategy_class));
-        auto ks = ::make_lw_shared<keyspace>(keyspace{timestamp, std::move(ks_name), durable_writes, std::move(map) });
-
-        return read_tables(*ks).then([this, ks] {
-            //Collection<Type> types = readTypes(keyspaceName);
-            return read_types(*ks);
-        }).then([this, ks] {
-            return read_functions(*ks);
-        }).then([this, ks] {
-            return read_aggregates(*ks);
-        }).then([ks] {
-            return make_ready_future<keyspace>(std::move(*ks));
-        });
-    }
-
-    future<> read_all_keyspaces() {
-        static auto ks_filter = [](row_type& row) {
-            auto ks_name = row.get_as<sstring>("keyspace_name");
-            return ks_name != db::system_keyspace::NAME && ks_name != db::schema_tables::v3::NAME;
-        };
-
-        auto query = fmt_query("SELECT keyspace_name, durable_writes, strategy_options, strategy_class, writeTime(durable_writes) AS timestamp FROM {}.{}",
-                        db::system_keyspace::legacy::KEYSPACES);
-
-        return _qp.execute_internal(query, cql3::query_processor::cache_internal::yes).then([this](result_set_type result) {
-            auto i = boost::make_filter_iterator(ks_filter, result->begin(), result->end());
-            auto e = boost::make_filter_iterator(ks_filter, result->end(), result->end());
-            return parallel_for_each(i, e, [this](row_type& row) {
-                return read_keyspace(row.get_as<sstring>("keyspace_name")
-                                , row.get_as<bool>("durable_writes")
-                                , row.get_as<sstring>("strategy_class")
-                                , row.get_as<sstring>("strategy_options")
-                                , row.get_as<db_clock::time_point>("timestamp")
-                                ).then([this](keyspace ks) {
-                    _keyspaces.emplace_back(std::move(ks));
-                   });
-            }).finally([result] {});
-        });
-    }
-
-    future<> drop_legacy_tables() {
-        mlogger.info("Dropping legacy schema tables");
-        auto with_snapshot = !_keyspaces.empty();
-        for (const sstring& cfname : legacy_schema_tables) {
-            co_await replica::database::legacy_drop_table_on_all_shards(_db, _sys_ks, db::system_keyspace::NAME, cfname, with_snapshot);
-        }
-    }
-
-    future<> store_keyspaces_in_new_schema_tables() {
-        mlogger.info("Moving {} keyspaces from legacy schema tables to the new schema keyspace ({})",
-                        _keyspaces.size(), db::schema_tables::v3::NAME);
-
-        utils::chunked_vector<mutation> mutations;
-
-        for (auto& ks : _keyspaces) {
-            auto ksm = ::make_lw_shared<keyspace_metadata>(ks.name
-                            , ks.replication_params["class"] // TODO, make ksm like c3?
-                            , cql3::statements::property_definitions::to_extended_map(ks.replication_params)
-                            , std::nullopt
-                            , std::nullopt
-                            , ks.durable_writes);
-
-            // we want separate time stamps for tables/types, so cannot bulk them into the ksm.
-            for (auto&& m : db::schema_tables::make_create_keyspace_mutations(schema_features::full(), ksm, ks.timestamp.time_since_epoch().count(), false)) {
-                mutations.emplace_back(std::move(m));
-            }
-            for (auto& t : ks.tables) {
-                db::schema_tables::add_table_or_view_to_schema_mutation(t.metadata, t.timestamp.time_since_epoch().count(), true, mutations);
-            }
-            for (auto& t : ks.types) {
-                db::schema_tables::add_type_to_schema_mutation(t.metadata, t.timestamp.time_since_epoch().count(), mutations);
-            }
-        }
-        return _qp.proxy().mutate_locally(std::move(mutations), tracing::trace_state_ptr());
-    }
-
-    future<> flush_schemas() {
-        auto& db = _qp.db().real_database().container();
-        return replica::database::flush_tables_on_all_shards(db, db::schema_tables::all_table_infos(schema_features::full()));
-    }
-
-    future<> migrate() {
-        return read_all_keyspaces().then([this]() {
-            // write metadata to the new schema tables
-            return store_keyspaces_in_new_schema_tables()
-                                                .then(std::bind(&migrator::flush_schemas, this))
-                                                .then(std::bind(&migrator::drop_legacy_tables, this))
-                                                .then([] { mlogger.info("Completed migration of legacy schema tables"); });
-        });
-    }
-
-    sharded<service::storage_proxy>& _sp;
-    sharded<replica::database>& _db;
-    sharded<db::system_keyspace>& _sys_ks;
-    cql3::query_processor& _qp;
-    std::vector<keyspace> _keyspaces;
-};
-
-const std::unordered_set<sstring> migrator::legacy_schema_tables = {
-                db::system_keyspace::legacy::KEYSPACES,
-                db::system_keyspace::legacy::COLUMNFAMILIES,
-                db::system_keyspace::legacy::COLUMNS,
-                db::system_keyspace::legacy::TRIGGERS,
-                db::system_keyspace::legacy::USERTYPES,
-                db::system_keyspace::legacy::FUNCTIONS,
-                db::system_keyspace::legacy::AGGREGATES,
-};
-
-}
-}
-
-future<>
-db::legacy_schema_migrator::migrate(sharded<service::storage_proxy>& sp, sharded<replica::database>& db, sharded<db::system_keyspace>& sys_ks, cql3::query_processor& qp) {
-    return do_with(migrator(sp, db, sys_ks, qp), std::bind(&migrator::migrate, std::placeholders::_1));
-}
-

db/legacy_schema_migrator.hh

@@ -1,37 +0,0 @@
-/*
- * Modified by ScyllaDB
- * Copyright (C) 2017-present ScyllaDB
- */
-
-/*
- * SPDX-License-Identifier: (LicenseRef-ScyllaDB-Source-Available-1.0 and Apache-2.0)
- */
-
-#pragma once
-
-#include <seastar/core/future.hh>
-#include <seastar/core/sharded.hh>
-
-#include "seastarx.hh"
-
-namespace replica {
-class database;
-}
-
-namespace cql3 {
-class query_processor;
-}
-
-namespace service {
-class storage_proxy;
-}
-
-namespace db {
-class system_keyspace;
-
-namespace legacy_schema_migrator {
-
-future<> migrate(sharded<service::storage_proxy>&, sharded<replica::database>& db, sharded<db::system_keyspace>& sys_ks, cql3::query_processor&);
-
-}
-}

db/partition_snapshot_row_cursor.hh

@@ -542,6 +542,7 @@ public:
     // Returns the range tombstone for the key range adjacent to the cursor's position from the side of smaller keys.
     // Excludes the range for the row itself. That information is returned by range_tombstone_for_row().
     // It's possible that range_tombstone() is empty and range_tombstone_for_row() is not empty.
+    // Note that this is different from the meaning of rows_entry::range_tombstone(), which includes the row itself.
     tombstone range_tombstone() const { return _range_tombstone; }
 
     // Can be called when cursor is pointing at a row.

db/row_cache.cc

@@ -1287,6 +1287,15 @@ row_cache::row_cache(schema_ptr s, snapshot_source src, cache_tracker& tracker,
     , _partitions(dht::raw_token_less_comparator{})
     , _underlying(src())
     , _snapshot_source(std::move(src))
+    , _update_section(abstract_formatter([this] (fmt::context& ctx) {
+        fmt::format_to(ctx.out(), "cache.update {}.{}", _schema->ks_name(), _schema->cf_name());
+    }))
+    , _populate_section(abstract_formatter([this] (fmt::context& ctx) {
+        fmt::format_to(ctx.out(), "cache.populate {}.{}", _schema->ks_name(), _schema->cf_name());
+    }))
+    , _read_section(abstract_formatter([this] (fmt::context& ctx) {
+        fmt::format_to(ctx.out(), "cache.read {}.{}", _schema->ks_name(), _schema->cf_name());
+    }))
 {
   try {
     with_allocator(_tracker.allocator(), [this, cont] {

db/schema_tables.cc

@@ -404,10 +404,7 @@ const std::unordered_set<table_id>& schema_tables_holding_schema_mutations() {
                 computed_columns(),
                 dropped_columns(),
                 indexes(),
-                scylla_tables(),
-                db::system_keyspace::legacy::column_families(),
-                db::system_keyspace::legacy::columns(),
-                db::system_keyspace::legacy::triggers()}) {
+                scylla_tables()}) {
             SCYLLA_ASSERT(s->clustering_key_size() > 0);
             auto&& first_column_name = s->clustering_column_at(0).name_as_text();
             SCYLLA_ASSERT(first_column_name == "table_name"
@@ -2840,26 +2837,6 @@ void check_no_legacy_secondary_index_mv_schema(replica::database& db, const view
 }
 
 
-namespace legacy {
-
-table_schema_version schema_mutations::digest() const {
-    md5_hasher h;
-    const db::schema_features no_features;
-    db::schema_tables::feed_hash_for_schema_digest(h, _columnfamilies, no_features);
-    db::schema_tables::feed_hash_for_schema_digest(h, _columns, no_features);
-    return table_schema_version(utils::UUID_gen::get_name_UUID(h.finalize()));
-}
-
-future<schema_mutations> read_table_mutations(sharded<service::storage_proxy>& proxy,
-    sstring keyspace_name, sstring table_name, schema_ptr s)
-{
-    mutation cf_m = co_await read_schema_partition_for_table(proxy, s, keyspace_name, table_name);
-    mutation col_m = co_await read_schema_partition_for_table(proxy, db::system_keyspace::legacy::columns(), keyspace_name, table_name);
-    co_return schema_mutations{std::move(cf_m), std::move(col_m)};
-}
-
-} // namespace legacy
-
 static auto GET_COLUMN_MAPPING_QUERY = format("SELECT column_name, clustering_order, column_name_bytes, kind, position, type FROM system.{} WHERE cf_id = ? AND schema_version = ?",
     db::schema_tables::SCYLLA_TABLE_SCHEMA_HISTORY);
 

db/schema_tables.hh

@@ -155,24 +155,6 @@ schema_ptr scylla_table_schema_history();
 const std::unordered_set<table_id>& schema_tables_holding_schema_mutations();
 }
 
-namespace legacy {
-
-class schema_mutations {
-    mutation _columnfamilies;
-    mutation _columns;
-public:
-    schema_mutations(mutation columnfamilies, mutation columns)
-        : _columnfamilies(std::move(columnfamilies))
-        , _columns(std::move(columns))
-    { }
-    table_schema_version digest() const;
-};
-
-future<schema_mutations> read_table_mutations(sharded<service::storage_proxy>& proxy,
-    sstring keyspace_name, sstring table_name, schema_ptr s);
-
-}
-
 struct qualified_name {
     sstring keyspace_name;
     sstring table_name;

db/system_keyspace.cc

@@ -847,8 +847,6 @@ schema_ptr system_keyspace::corrupt_data() {
     return corrupt_data;
 }
 
-static constexpr auto schema_gc_grace = std::chrono::duration_cast<std::chrono::seconds>(days(7)).count();
-
 /*static*/ schema_ptr system_keyspace::scylla_local() {
     static thread_local auto scylla_local = [] {
         schema_builder builder(generate_legacy_id(NAME, SCYLLA_LOCAL), NAME, SCYLLA_LOCAL,
@@ -1360,289 +1358,6 @@ schema_ptr system_keyspace::role_permissions() {
     return schema;
 }
 
-schema_ptr system_keyspace::legacy::hints() {
-    static thread_local auto schema = [] {
-        schema_builder builder(generate_legacy_id(NAME, HINTS), NAME, HINTS,
-        // partition key
-        {{"target_id", uuid_type}},
-        // clustering key
-        {{"hint_id", timeuuid_type}, {"message_version", int32_type}},
-        // regular columns
-        {{"mutation", bytes_type}},
-        // static columns
-        {},
-        // regular column name type
-        utf8_type,
-        // comment
-        "*DEPRECATED* hints awaiting delivery"
-       );
-       builder.set_gc_grace_seconds(0);
-       builder.set_compaction_strategy(compaction::compaction_strategy_type::incremental);
-       builder.set_compaction_strategy_options({{"enabled", "false"}});
-       builder.with(schema_builder::compact_storage::yes);
-       builder.with_hash_version();
-       return builder.build();
-    }();
-    return schema;
-}
-
-schema_ptr system_keyspace::legacy::batchlog() {
-    static thread_local auto schema = [] {
-        schema_builder builder(generate_legacy_id(NAME, BATCHLOG), NAME, BATCHLOG,
-        // partition key
-        {{"id", uuid_type}},
-        // clustering key
-        {},
-        // regular columns
-        {{"data", bytes_type}, {"version", int32_type}, {"written_at", timestamp_type}},
-        // static columns
-        {},
-        // regular column name type
-        utf8_type,
-        // comment
-        "*DEPRECATED* batchlog entries"
-       );
-       builder.set_gc_grace_seconds(0);
-       builder.set_compaction_strategy(compaction::compaction_strategy_type::incremental);
-       builder.set_compaction_strategy_options({{"min_threshold", "2"}});
-       builder.with(schema_builder::compact_storage::no);
-       builder.with_hash_version();
-       return builder.build();
-    }();
-    return schema;
-}
-
-schema_ptr system_keyspace::legacy::keyspaces() {
-    static thread_local auto schema = [] {
-        schema_builder builder(generate_legacy_id(NAME, KEYSPACES), NAME, KEYSPACES,
-        // partition key
-        {{"keyspace_name", utf8_type}},
-        // clustering key
-        {},
-        // regular columns
-        {
-         {"durable_writes", boolean_type},
-         {"strategy_class", utf8_type},
-         {"strategy_options", utf8_type}
-        },
-        // static columns
-        {},
-        // regular column name type
-        utf8_type,
-        // comment
-        "*DEPRECATED* keyspace definitions"
-       );
-       builder.set_gc_grace_seconds(schema_gc_grace);
-       builder.with(schema_builder::compact_storage::yes);
-       builder.with_hash_version();
-       return builder.build();
-    }();
-    return schema;
-}
-
-schema_ptr system_keyspace::legacy::column_families() {
-    static thread_local auto schema = [] {
-        schema_builder builder(generate_legacy_id(NAME, COLUMNFAMILIES), NAME, COLUMNFAMILIES,
-        // partition key
-        {{"keyspace_name", utf8_type}},
-        // clustering key
-        {{"columnfamily_name", utf8_type}},
-        // regular columns
-        {
-         {"bloom_filter_fp_chance", double_type},
-         {"caching", utf8_type},
-         {"cf_id", uuid_type},
-         {"comment", utf8_type},
-         {"compaction_strategy_class", utf8_type},
-         {"compaction_strategy_options", utf8_type},
-         {"comparator", utf8_type},
-         {"compression_parameters", utf8_type},
-         {"default_time_to_live", int32_type},
-         {"default_validator", utf8_type},
-         {"dropped_columns",  map_type_impl::get_instance(utf8_type, long_type, true)},
-         {"gc_grace_seconds", int32_type},
-         {"is_dense", boolean_type},
-         {"key_validator", utf8_type},
-         {"max_compaction_threshold", int32_type},
-         {"max_index_interval", int32_type},
-         {"memtable_flush_period_in_ms", int32_type},
-         {"min_compaction_threshold", int32_type},
-         {"min_index_interval", int32_type},
-         {"speculative_retry", utf8_type},
-         {"subcomparator", utf8_type},
-         {"type", utf8_type},
-         // The following 4 columns are only present up until 2.1.8 tables
-         {"key_aliases", utf8_type},
-         {"value_alias", utf8_type},
-         {"column_aliases", utf8_type},
-         {"index_interval", int32_type},},
-        // static columns
-        {},
-        // regular column name type
-        utf8_type,
-        // comment
-        "*DEPRECATED* table definitions"
-       );
-       builder.set_gc_grace_seconds(schema_gc_grace);
-       builder.with(schema_builder::compact_storage::no);
-       builder.with_hash_version();
-       return builder.build();
-    }();
-    return schema;
-}
-
-schema_ptr system_keyspace::legacy::columns() {
-    static thread_local auto schema = [] {
-        schema_builder builder(generate_legacy_id(NAME, COLUMNS), NAME, COLUMNS,
-        // partition key
-        {{"keyspace_name", utf8_type}},
-        // clustering key
-        {{"columnfamily_name", utf8_type}, {"column_name", utf8_type}},
-        // regular columns
-        {
-            {"component_index", int32_type},
-            {"index_name", utf8_type},
-            {"index_options", utf8_type},
-            {"index_type", utf8_type},
-            {"type", utf8_type},
-            {"validator", utf8_type},
-        },
-        // static columns
-        {},
-        // regular column name type
-        utf8_type,
-        // comment
-        "column definitions"
-        );
-        builder.set_gc_grace_seconds(schema_gc_grace);
-        builder.with(schema_builder::compact_storage::no);
-        builder.with_hash_version();
-        return builder.build();
-    }();
-    return schema;
-}
-
-schema_ptr system_keyspace::legacy::triggers() {
-    static thread_local auto schema = [] {
-        schema_builder builder(generate_legacy_id(NAME, TRIGGERS), NAME, TRIGGERS,
-        // partition key
-        {{"keyspace_name", utf8_type}},
-        // clustering key
-        {{"columnfamily_name", utf8_type}, {"trigger_name", utf8_type}},
-        // regular columns
-        {
-            {"trigger_options",  map_type_impl::get_instance(utf8_type, utf8_type, true)},
-        },
-        // static columns
-        {},
-        // regular column name type
-        utf8_type,
-        // comment
-        "trigger definitions"
-        );
-        builder.set_gc_grace_seconds(schema_gc_grace);
-        builder.with(schema_builder::compact_storage::no);
-        builder.with_hash_version();
-        return builder.build();
-    }();
-    return schema;
-}
-
-schema_ptr system_keyspace::legacy::usertypes() {
-    static thread_local auto schema = [] {
-        schema_builder builder(generate_legacy_id(NAME, USERTYPES), NAME, USERTYPES,
-        // partition key
-        {{"keyspace_name", utf8_type}},
-        // clustering key
-        {{"type_name", utf8_type}},
-        // regular columns
-        {
-            {"field_names", list_type_impl::get_instance(utf8_type, true)},
-            {"field_types", list_type_impl::get_instance(utf8_type, true)},
-        },
-        // static columns
-        {},
-        // regular column name type
-        utf8_type,
-        // comment
-        "user defined type definitions"
-        );
-        builder.set_gc_grace_seconds(schema_gc_grace);
-        builder.with(schema_builder::compact_storage::no);
-        builder.with_hash_version();
-        return builder.build();
-    }();
-    return schema;
-}
-
-schema_ptr system_keyspace::legacy::functions() {
-    /**
-     * Note: we have our own "legacy" version of this table (in schema_tables),
-     * but it is (afaik) not used, and differs slightly from the origin one.
-     * This is based on the origin schema, since we're more likely to encounter
-     * installations of that to migrate, rather than our own (if we dont use the table).
-     */
-    static thread_local auto schema = [] {
-        schema_builder builder(generate_legacy_id(NAME, FUNCTIONS), NAME, FUNCTIONS,
-        // partition key
-        {{"keyspace_name", utf8_type}},
-        // clustering key
-        {{"function_name", utf8_type},{"signature", list_type_impl::get_instance(utf8_type, false)}},
-        // regular columns
-        {
-            {"argument_names", list_type_impl::get_instance(utf8_type, true)},
-            {"argument_types", list_type_impl::get_instance(utf8_type, true)},
-            {"body", utf8_type},
-            {"language", utf8_type},
-            {"return_type", utf8_type},
-            {"called_on_null_input", boolean_type},
-        },
-        // static columns
-        {},
-        // regular column name type
-        utf8_type,
-        // comment
-        "*DEPRECATED* user defined type definitions"
-        );
-        builder.set_gc_grace_seconds(schema_gc_grace);
-        builder.with(schema_builder::compact_storage::no);
-        builder.with_hash_version();
-        return builder.build();
-    }();
-    return schema;
-}
-
-schema_ptr system_keyspace::legacy::aggregates() {
-    static thread_local auto schema = [] {
-        schema_builder builder(generate_legacy_id(NAME, AGGREGATES), NAME, AGGREGATES,
-        // partition key
-        {{"keyspace_name", utf8_type}},
-        // clustering key
-        {{"aggregate_name", utf8_type},{"signature", list_type_impl::get_instance(utf8_type, false)}},
-        // regular columns
-        {
-            {"argument_types", list_type_impl::get_instance(utf8_type, true)},
-            {"final_func", utf8_type},
-            {"initcond", bytes_type},
-            {"return_type", utf8_type},
-            {"state_func", utf8_type},
-            {"state_type", utf8_type},
-        },
-        // static columns
-        {},
-        // regular column name type
-        utf8_type,
-        // comment
-        "*DEPRECATED* user defined aggregate definition"
-        );
-        builder.set_gc_grace_seconds(schema_gc_grace);
-        builder.with(schema_builder::compact_storage::no);
-        builder.with_hash_version();
-        return builder.build();
-    }();
-    return schema;
-}
-
 schema_ptr system_keyspace::dicts() {
     static thread_local auto schema = [] {
         auto id = generate_legacy_id(NAME, DICTS);
@@ -2615,13 +2330,6 @@ std::vector<schema_ptr> system_keyspace::all_tables(const db::config& cfg) {
     if (cfg.check_experimental(db::experimental_features_t::feature::KEYSPACE_STORAGE_OPTIONS)) {
         r.insert(r.end(), {sstables_registry()});
     }
-    // legacy schema
-    r.insert(r.end(), {
-                    // TODO: once we migrate hints/batchlog and add converter
-                    // legacy::hints(), legacy::batchlog(),
-                    legacy::keyspaces(), legacy::column_families(),
-                    legacy::columns(), legacy::triggers(), legacy::usertypes(),
-                    legacy::functions(), legacy::aggregates(), });
 
     return r;
 }

db/system_keyspace.hh

@@ -241,28 +241,6 @@ public:
         static schema_ptr cdc_local();
     };
 
-    struct legacy {
-        static constexpr auto HINTS = "hints";
-        static constexpr auto BATCHLOG = "batchlog";
-        static constexpr auto KEYSPACES = "schema_keyspaces";
-        static constexpr auto COLUMNFAMILIES = "schema_columnfamilies";
-        static constexpr auto COLUMNS = "schema_columns";
-        static constexpr auto TRIGGERS = "schema_triggers";
-        static constexpr auto USERTYPES = "schema_usertypes";
-        static constexpr auto FUNCTIONS = "schema_functions";
-        static constexpr auto AGGREGATES = "schema_aggregates";
-
-        static schema_ptr keyspaces();
-        static schema_ptr column_families();
-        static schema_ptr columns();
-        static schema_ptr triggers();
-        static schema_ptr usertypes();
-        static schema_ptr functions();
-        static schema_ptr aggregates();
-        static schema_ptr hints();
-        static schema_ptr batchlog();
-    };
-
     // Partition estimates for a given range of tokens.
     struct range_estimates {
         schema_ptr schema;

db/view/delete_ghost_rows_visitor.hh

@@ -9,6 +9,8 @@
 #include "query/query-result-reader.hh"
 #include "replica/database_fwd.hh"
 #include "db/timeout_clock.hh"
+#include <seastar/core/future.hh>
+#include <seastar/core/gate.hh>
 
 namespace service {
 class storage_proxy;
@@ -25,8 +27,14 @@ class delete_ghost_rows_visitor {
     replica::table& _view_table;
     schema_ptr _base_schema;
     std::optional<partition_key> _view_pk;
+    db::timeout_semaphore _concurrency_semaphore;
+    seastar::gate _gate;
+    std::exception_ptr& _ex;
+
 public:
-    delete_ghost_rows_visitor(service::storage_proxy& proxy, service::query_state& state, view_ptr view, db::timeout_clock::duration timeout_duration);
+    delete_ghost_rows_visitor(service::storage_proxy& proxy, service::query_state& state, view_ptr view, db::timeout_clock::duration timeout_duration, size_t concurrency, std::exception_ptr& ex);
+    delete_ghost_rows_visitor(delete_ghost_rows_visitor&&) = default;
+    ~delete_ghost_rows_visitor() noexcept;
 
     void add_value(const column_definition& def, query::result_row_view::iterator_type& i) {
     }
@@ -45,6 +53,9 @@ public:
     uint32_t accept_partition_end(const query::result_row_view& static_row) {
         return 0;
     }
+
+private:
+    future<> do_accept_new_row(partition_key pk,  clustering_key ck);
 };
 
 } //namespace db::view

db/view/view.cc

@@ -3597,7 +3597,7 @@ view_updating_consumer::view_updating_consumer(view_update_generator& gen, schem
     })
 { }
 
-delete_ghost_rows_visitor::delete_ghost_rows_visitor(service::storage_proxy& proxy, service::query_state& state, view_ptr view, db::timeout_clock::duration timeout_duration)
+delete_ghost_rows_visitor::delete_ghost_rows_visitor(service::storage_proxy& proxy, service::query_state& state, view_ptr view, db::timeout_clock::duration timeout_duration, size_t concurrency, std::exception_ptr& ex)
         : _proxy(proxy)
         , _state(state)
         , _timeout_duration(timeout_duration)
@@ -3605,8 +3605,20 @@ delete_ghost_rows_visitor::delete_ghost_rows_visitor(service::storage_proxy& pro
         , _view_table(_proxy.get_db().local().find_column_family(view))
         , _base_schema(_proxy.get_db().local().find_schema(_view->view_info()->base_id()))
         , _view_pk()
+        , _concurrency_semaphore(concurrency)
+        , _ex(ex)
 {}
 
+
+delete_ghost_rows_visitor::~delete_ghost_rows_visitor() noexcept {
+    try {
+        _gate.close().get();
+    } catch (...) {
+        // Closing the gate should never throw, but if it does anyway, capture the exception.
+        _ex = std::current_exception();
+    }
+}
+
 void delete_ghost_rows_visitor::accept_new_partition(const partition_key& key, uint32_t row_count) {
     SCYLLA_ASSERT(thread::running_in_thread());
     _view_pk = key;
@@ -3614,7 +3626,18 @@ void delete_ghost_rows_visitor::accept_new_partition(const partition_key& key, u
 
 // Assumes running in seastar::thread
 void delete_ghost_rows_visitor::accept_new_row(const clustering_key& ck, const query::result_row_view& static_row, const query::result_row_view& row) {
-    auto view_exploded_pk = _view_pk->explode();
+    auto units = get_units(_concurrency_semaphore, 1).get();
+    (void)seastar::try_with_gate(_gate, [this, pk = _view_pk.value(), units = std::move(units), ck] () mutable {
+        return do_accept_new_row(std::move(pk), std::move(ck)).then_wrapped([this, units = std::move(units)] (future<>&& f) mutable {
+            if (f.failed()) {
+                _ex = f.get_exception();
+            }
+        });
+    });
+}
+
+future<> delete_ghost_rows_visitor::do_accept_new_row(partition_key pk, clustering_key ck) {
+    auto view_exploded_pk = pk.explode();
     auto view_exploded_ck = ck.explode();
     std::vector<bytes> base_exploded_pk(_base_schema->partition_key_size());
     std::vector<bytes> base_exploded_ck(_base_schema->clustering_key_size());
@@ -3649,17 +3672,17 @@ void delete_ghost_rows_visitor::accept_new_row(const clustering_key& ck, const q
             _proxy.get_max_result_size(partition_slice), query::tombstone_limit(_proxy.get_tombstone_limit()));
     auto timeout = db::timeout_clock::now() + _timeout_duration;
     service::storage_proxy::coordinator_query_options opts{timeout, _state.get_permit(), _state.get_client_state(), _state.get_trace_state()};
-    auto base_qr = _proxy.query(_base_schema, command, std::move(partition_ranges), db::consistency_level::ALL, opts).get();
+    auto base_qr = co_await _proxy.query(_base_schema, command, std::move(partition_ranges), db::consistency_level::ALL, opts);
     query::result& result = *base_qr.query_result;
-    auto delete_ghost_row = [&]() {
-        mutation m(_view, *_view_pk);
+    auto delete_ghost_row = [&]() -> future<> {
+        mutation m(_view, pk);
         auto& row = m.partition().clustered_row(*_view, ck);
         row.apply(tombstone(api::new_timestamp(), gc_clock::now()));
         timeout = db::timeout_clock::now() + _timeout_duration;
-        _proxy.mutate({m}, db::consistency_level::ALL, timeout, _state.get_trace_state(), empty_service_permit(), db::allow_per_partition_rate_limit::no).get();
+        return _proxy.mutate({m}, db::consistency_level::ALL, timeout, _state.get_trace_state(), empty_service_permit(), db::allow_per_partition_rate_limit::no);
     };
     if (result.row_count().value_or(0) == 0) {
-        delete_ghost_row();
+        co_await delete_ghost_row();
     } else if (!view_key_cols_not_in_base_key.empty()) {
         if (result.row_count().value_or(0) != 1) {
             on_internal_error(vlogger, format("Got multiple base rows corresponding to a single view row when pruning {}.{}", _view->ks_name(), _view->cf_name()));
@@ -3669,7 +3692,7 @@ void delete_ghost_rows_visitor::accept_new_row(const clustering_key& ck, const q
         for (const auto& [col_def, col_val] : view_key_cols_not_in_base_key) {
             const data_value* base_val = base_row.get_data_value(col_def->name_as_text());
             if (!base_val || base_val->is_null() || col_val != base_val->serialize_nonnull()) {
-                delete_ghost_row();
+                co_await delete_ghost_row();
                 break;
             }
         }

dist/debian/debian/scylla-server.install

@@ -2,7 +2,6 @@ etc/default/scylla-server
 etc/default/scylla-housekeeping
 etc/scylla.d/*.conf
 etc/bash_completion.d/nodetool-completion
-opt/scylladb/share/p11-kit/modules/*
 opt/scylladb/share/doc/scylla/*
 opt/scylladb/share/doc/scylla/licenses/
 usr/lib/systemd/system/*.timer

dist/redhat/scylla.spec

@@ -122,7 +122,6 @@ ln -sfT /etc/scylla /var/lib/scylla/conf
 %config(noreplace) %{_sysconfdir}/sysconfig/scylla-housekeeping
 %attr(0755,root,root) %dir %{_sysconfdir}/scylla.d
 %config(noreplace) %{_sysconfdir}/scylla.d/*.conf
-/opt/scylladb/share/p11-kit/modules/*
 /opt/scylladb/share/doc/scylla/*
 %{_unitdir}/scylla-fstrim.service
 %{_unitdir}/scylla-housekeeping-daily.service

docs/_utils/redirects.yaml

@@ -1,6 +1,18 @@
 ### a dictionary of redirections
 #old path: new path
 
+# Move the diver information to another project
+
+/stable/using-scylla/drivers/index.html: https://docs.scylladb.com/stable/drivers/index.html
+/stable/using-scylla/drivers/dynamo-drivers/index.html: https://docs.scylladb.com/stable/drivers/dynamo-drivers.html
+/stable/using-scylla/drivers/cql-drivers/index.html: https://docs.scylladb.com/stable/drivers/cql-drivers.html
+/stable/using-scylla/drivers/cql-drivers/scylla-python-driver.html: https://docs.scylladb.com/stable/drivers/cql-drivers.html
+/stable/using-scylla/drivers/cql-drivers/scylla-java-driver.html: https://docs.scylladb.com/stable/drivers/cql-drivers.html
+/stable/using-scylla/drivers/cql-drivers/scylla-go-driver.html: https://docs.scylladb.com/stable/drivers/cql-drivers.html
+/stable/using-scylla/drivers/cql-drivers/scylla-gocqlx-driver.html: https://docs.scylladb.com/stable/drivers/cql-drivers.html
+/stable/using-scylla/drivers/cql-drivers/scylla-cpp-driver.html: https://docs.scylladb.com/stable/drivers/cql-drivers.html
+/stable/using-scylla/drivers/cql-drivers/scylla-rust-driver.html: https://docs.scylladb.com/stable/drivers/cql-drivers.html
+
 # Redirect 2025.1 upgrade guides that are not on master but were indexed by Google (404 reported)
 
 /master/upgrade/upgrade-guides/upgrade-guide-from-2024.x-to-2025.1/upgrade-guide-from-2024.x-to-2025.1.html: https://docs.scylladb.com/manual/stable/upgrade/index.html

docs/cql/cql-extensions.md

@@ -106,6 +106,15 @@ which is recommended in order to make the operation less heavyweight
 and allow for running multiple parallel pruning statements for non-overlapping
 token ranges.
 
+By default, the PRUNE MATERIALIZED VIEW statement is relatively slow, only
+performing one base read or write at a time. This can be changed with the
+USING CONCURRENCY clause. If the clause is used, the concurrency of reads
+and writes from the base table will be allowed to increase up to the specified
+value. For example, to run the PRUNE with 100 parallel reads/writes, you can use:
+```cql
+  PRUNE MATERIALIZED VIEW my_view WHERE v = 19 USING CONCURRENCY 100;
+```
+
 ## Synchronous materialized views
 
 Usually, when a table with materialized views is updated, the update to the

docs/dev/task_manager.md

@@ -45,6 +45,22 @@ immediately after it's finished.
 
 A flag which determines if a task can be aborted through API.
 
+# Task timing fields
+
+Tasks have three timing fields that track different stages of their lifecycle:
+
+- `creation_time` - When the task was created/queued. This is extracted from the task's
+  UUID (which is a timeuuid) and represents the moment the task request was submitted.
+- `start_time` - When the task actually began executing. For tasks that are queued, this
+  will be unspecified (equal to epoch) until execution starts. For node operations
+  like decommission, this is set when the request is picked up for execution by the
+  topology coordinator.
+- `end_time` - When the task completed (successfully or with an error). This is
+  unspecified (equal to epoch) until the task finishes.
+
+The difference between `creation_time` and `start_time` represents the time a task
+spent waiting in the queue before execution began.
+
 # Type vs scope vs kind
 
 `type` of a task describes what operation is covered by a task,

docs/getting-started/index.rst

@@ -37,7 +37,7 @@ Getting Started
   :id: "getting-started"
   :class: my-panel
 
-  * :doc:`ScyllaDB Drivers</using-scylla/drivers/index>`
+  * `ScyllaDB Drivers <https://docs.scylladb.com/stable/drivers/index.html>`_
   * `Get Started Lesson on ScyllaDB University <https://university.scylladb.com/courses/scylla-essentials-overview/lessons/quick-wins-install-and-run-scylla/>`_    
   * :doc:`CQL Reference </cql/index>`
   * :doc:`cqlsh - the CQL shell </cql/cqlsh/>`

docs/index.rst

@@ -35,7 +35,7 @@ Documentation Highlights
 * :doc:`Cluster Management Procedures </operating-scylla/procedures/cluster-management/index>`
 * :doc:`Upgrade ScyllaDB </upgrade/index>`
 * :doc:`CQL Reference </cql/index>`
-* :doc:`ScyllaDB Drivers </using-scylla/drivers/index>`
+* `ScyllaDB Drivers <https://docs.scylladb.com/stable/drivers/index.html>`_
 * :doc:`Features </features/index>`
 
 ScyllaDB Support

docs/operating-scylla/admin.rst

@@ -172,7 +172,7 @@ For example:
 * `ScyllaDB Java Driver <https://github.com/scylladb/java-driver/tree/3.7.1-scylla/manual/compression>`_
 * `Go Driver <https://godoc.org/github.com/gocql/gocql#Compressor>`_
 
-Refer to the :doc:`Drivers Page </using-scylla/drivers/index>` for more drivers.
+Refer to `ScyllaDB Drivers <https://docs.scylladb.com/stable/drivers/index.html>`_ for more drivers.
 
 .. _internode-compression:
 

docs/operating-scylla/nodetool-commands/setlogginglevel.rst

@@ -110,7 +110,6 @@ To display the log classes (output changes with each version so your display may
    keys
    keyspace_utils
    large_data
-   legacy_schema_migrator
    lister
    load_balancer
    load_broadcaster

docs/operating-scylla/nodetool-commands/tasks/list.rst

@@ -42,21 +42,21 @@ For single list:
 
 .. code-block:: shell
 
-    task_id                              type   kind scope    state sequence_number keyspace table entity shard start_time           end_time
-    5116ddb6-85b5-4c3e-94fb-72128f15d7b4 repair node keyspace done  3               abc                   0     2025-01-16T16:12:11Z 2025-01-16T16:12:13Z
+    task_id                              type   kind scope    state sequence_number keyspace table entity shard creation_time        start_time           end_time
+    5116ddb6-85b5-4c3e-94fb-72128f15d7b4 repair node keyspace done  3               abc                   0     2025-01-16T16:12:08Z 2025-01-16T16:12:11Z 2025-01-16T16:12:13Z
 
 With repetition:
 
 .. code-block:: shell
 
-    task_id                              type   kind scope    state   sequence_number keyspace table entity shard start_time           end_time
-    d8926ee7-0faf-47b7-bfeb-82477e0c7b33 repair node keyspace running 5               abc                   0     2025-01-16T16:12:57Z
-    1e028cb8-31a3-45ed-8728-af7a1ab586f6 repair node keyspace done    4               abc                   0     2025-01-16T16:12:45Z 2025-01-16T16:12:47Z
+    task_id                              type   kind scope    state   sequence_number keyspace table entity shard creation_time        start_time           end_time
+    d8926ee7-0faf-47b7-bfeb-82477e0c7b33 repair node keyspace running 5               abc                   0     2025-01-16T16:12:54Z 2025-01-16T16:12:57Z
+    1e028cb8-31a3-45ed-8728-af7a1ab586f6 repair node keyspace done    4               abc                   0     2025-01-16T16:12:42Z 2025-01-16T16:12:45Z 2025-01-16T16:12:47Z
 
-    task_id                              type   kind scope    state   sequence_number keyspace table entity shard start_time           end_time
-    1e535f9b-97fa-4788-a956-8f3216a6ea8d repair node keyspace created 6               abc                   0
-    d8926ee7-0faf-47b7-bfeb-82477e0c7b33 repair node keyspace running 5               abc                   0     2025-01-16T16:12:57Z
-    1e028cb8-31a3-45ed-8728-af7a1ab586f6 repair node keyspace done    4               abc                   0     2025-01-16T16:12:45Z 2025-01-16T16:12:47Z
+    task_id                              type   kind scope    state   sequence_number keyspace table entity shard creation_time        start_time           end_time
+    1e535f9b-97fa-4788-a956-8f3216a6ea8d repair node keyspace created 6               abc                   0     2025-01-16T16:13:02Z
+    d8926ee7-0faf-47b7-bfeb-82477e0c7b33 repair node keyspace running 5               abc                   0     2025-01-16T16:12:54Z 2025-01-16T16:12:57Z
+    1e028cb8-31a3-45ed-8728-af7a1ab586f6 repair node keyspace done    4               abc                   0     2025-01-16T16:12:42Z 2025-01-16T16:12:45Z 2025-01-16T16:12:47Z
 
 See also
 --------

docs/operating-scylla/nodetool-commands/tasks/status.rst

@@ -25,6 +25,7 @@ Example output
    scope: keyspace
    state: running
    is_abortable: true
+   creation_time: 2024-07-29T15:48:50Z
    start_time: 2024-07-29T15:48:55Z
    end_time:
    error:

docs/operating-scylla/nodetool-commands/tasks/tree.rst

@@ -26,22 +26,22 @@ For single task:
 
 .. code-block:: shell
 
-   id                                   type   kind scope    state is_abortable start_time           end_time             error parent_id                            sequence_number shard keyspace table entity progress_units total completed children_ids
-   be5559ea-bc5a-428c-b8ce-d14eac7a1765 repair node keyspace done  true         2024-07-29T16:06:46Z 2024-07-29T16:06:46Z       none                                 1               0     abc                   ranges         4     4         [{task_id: 542e38cb-9ad4-40aa-9010-de2630004e55, node: 127.0.0.1 }, {task_id: 8974ebcc-1e87-4040-88fe-f2438261f7fb, node: 127.0.0.1 }]
-   542e38cb-9ad4-40aa-9010-de2630004e55 repair node shard    done  false        2024-07-29T16:06:46Z 2024-07-29T16:06:46Z       be5559ea-bc5a-428c-b8ce-d14eac7a1765 1               0     abc                   ranges         2     2         []
-   8974ebcc-1e87-4040-88fe-f2438261f7fb repair node shard    done  false        2024-07-29T16:06:46Z 2024-07-29T16:06:46Z       be5559ea-bc5a-428c-b8ce-d14eac7a1765 1               1     abc                   ranges         2     2         []
+   id                                   type   kind scope    state is_abortable creation_time        start_time           end_time             error parent_id                            sequence_number shard keyspace table entity progress_units total completed children_ids
+   be5559ea-bc5a-428c-b8ce-d14eac7a1765 repair node keyspace done  true         2024-07-29T16:06:43Z 2024-07-29T16:06:46Z 2024-07-29T16:06:46Z       none                                 1               0     abc                   ranges         4     4         [{task_id: 542e38cb-9ad4-40aa-9010-de2630004e55, node: 127.0.0.1 }, {task_id: 8974ebcc-1e87-4040-88fe-f2438261f7fb, node: 127.0.0.1 }]
+   542e38cb-9ad4-40aa-9010-de2630004e55 repair node shard    done  false        2024-07-29T16:06:43Z 2024-07-29T16:06:46Z 2024-07-29T16:06:46Z       be5559ea-bc5a-428c-b8ce-d14eac7a1765 1               0     abc                   ranges         2     2         []
+   8974ebcc-1e87-4040-88fe-f2438261f7fb repair node shard    done  false        2024-07-29T16:06:43Z 2024-07-29T16:06:46Z 2024-07-29T16:06:46Z       be5559ea-bc5a-428c-b8ce-d14eac7a1765 1               1     abc                   ranges         2     2         []
 
 For all tasks:
 
 .. code-block:: shell
 
-   id                                   type                   kind    scope    state is_abortable start_time           end_time             error parent_id                            sequence_number shard keyspace table entity progress_units total completed children_ids
-   16eafb1e-8b2e-48e6-bd7a-432ca3d8b9fc repair                 node    keyspace done  true         2024-07-29T16:34:46Z 2024-07-29T16:34:46Z       none                                 1               0     abc                   ranges         4     4         [{task_id: e0aa1aa4-58ca-4bfb-b3e6-74e5f3a0f6ee, node: 127.0.0.1 }, {task_id: 49eb5797-b67e-46b0-9365-4460f7cf988a, node: 127.0.0.1 }]
-   e0aa1aa4-58ca-4bfb-b3e6-74e5f3a0f6ee repair                 node    shard    done  false        2024-07-29T16:34:46Z 2024-07-29T16:34:46Z       16eafb1e-8b2e-48e6-bd7a-432ca3d8b9fc 1               0     abc                   ranges         2     2         []
-   49eb5797-b67e-46b0-9365-4460f7cf988a repair                 node    shard    done  false        2024-07-29T16:34:46Z 2024-07-29T16:34:46Z       16eafb1e-8b2e-48e6-bd7a-432ca3d8b9fc 1               1     abc                   ranges         2     2         []
-   82d7b2a4-146e-4a72-ba93-c66d5b4e9867 offstrategy compaction node    keyspace done  true         2024-07-29T16:34:16Z 2024-07-29T16:34:16Z       none                                 954             0     abc                                  1     1         [{task_id: 9818277b-238d-4298-a56b-c0d2153bf140, node: 127.0.0.1 }, {task_id: c1eb0701-ad7a-45ff-956f-7b8d671fc5db, node: 127.0.0.1 }
-   9818277b-238d-4298-a56b-c0d2153bf140 offstrategy compaction node    shard    done  false        2024-07-29T16:34:16Z 2024-07-29T16:34:16Z       82d7b2a4-146e-4a72-ba93-c66d5b4e9867 954             0     abc                                  1     1         []
-   c1eb0701-ad7a-45ff-956f-7b8d671fc5db offstrategy compaction node    shard    done  false        2024-07-29T16:34:16Z 2024-07-29T16:34:16Z       82d7b2a4-146e-4a72-ba93-c66d5b4e9867 954             1     abc                                  1     1         []
+   id                                   type                   kind    scope    state is_abortable creation_time        start_time           end_time             error parent_id                            sequence_number shard keyspace table entity progress_units total completed children_ids
+   16eafb1e-8b2e-48e6-bd7a-432ca3d8b9fc repair                 node    keyspace done  true         2024-07-29T16:34:43Z 2024-07-29T16:34:46Z 2024-07-29T16:34:46Z       none                                 1               0     abc                   ranges         4     4         [{task_id: e0aa1aa4-58ca-4bfb-b3e6-74e5f3a0f6ee, node: 127.0.0.1 }, {task_id: 49eb5797-b67e-46b0-9365-4460f7cf988a, node: 127.0.0.1 }]
+   e0aa1aa4-58ca-4bfb-b3e6-74e5f3a0f6ee repair                 node    shard    done  false        2024-07-29T16:34:43Z 2024-07-29T16:34:46Z 2024-07-29T16:34:46Z       16eafb1e-8b2e-48e6-bd7a-432ca3d8b9fc 1               0     abc                   ranges         2     2         []
+   49eb5797-b67e-46b0-9365-4460f7cf988a repair                 node    shard    done  false        2024-07-29T16:34:43Z 2024-07-29T16:34:46Z 2024-07-29T16:34:46Z       16eafb1e-8b2e-48e6-bd7a-432ca3d8b9fc 1               1     abc                   ranges         2     2         []
+   82d7b2a4-146e-4a72-ba93-c66d5b4e9867 offstrategy compaction node    keyspace done  true         2024-07-29T16:34:13Z 2024-07-29T16:34:16Z 2024-07-29T16:34:16Z       none                                 954             0     abc                                  1     1         [{task_id: 9818277b-238d-4298-a56b-c0d2153bf140, node: 127.0.0.1 }, {task_id: c1eb0701-ad7a-45ff-956f-7b8d671fc5db, node: 127.0.0.1 }
+   9818277b-238d-4298-a56b-c0d2153bf140 offstrategy compaction node    shard    done  false        2024-07-29T16:34:13Z 2024-07-29T16:34:16Z 2024-07-29T16:34:16Z       82d7b2a4-146e-4a72-ba93-c66d5b4e9867 954             0     abc                                  1     1         []
+   c1eb0701-ad7a-45ff-956f-7b8d671fc5db offstrategy compaction node    shard    done  false        2024-07-29T16:34:13Z 2024-07-29T16:34:16Z 2024-07-29T16:34:16Z       82d7b2a4-146e-4a72-ba93-c66d5b4e9867 954             1     abc                                  1     1         []
 
 See also
 --------

docs/operating-scylla/procedures/tips/benchmark-tips.rst

@@ -206,7 +206,7 @@ This is 19% of the latency compared to no batching.
 Driver Guidelines
 -----------------
 
-Use the :doc:`ScyllaDB drivers </using-scylla/drivers/index>` that are available for Java, Python, Go, and C/C++.
+Use the `ScyllaDB drivers <https://docs.scylladb.com/stable/drivers/index.html>`_ that are available for Java, Python, Go, and C/C++.
 They provide much better performance than third-party drivers because they are shard aware &emdash; they can route requests to the right CPU core (shard).
 When the driver starts, it gets the topology of the cluster and therefore it knows exactly which CPU core should get a request.
 Our latest shard-aware drivers also improve the efficiency of our Change Data Capture (CDC) feature.

docs/operating-scylla/procedures/tips/production-readiness.rst

@@ -121,7 +121,7 @@ Driver Compression
 
 This refers to compressing traffic between the client and ScyllaDB.
 Verify your client driver is using compressed traffic when connected to ScyllaDB.
-As compression is driver settings dependent, please check your client driver manual or :doc:`ScyllaDB Drivers </using-scylla/drivers/index>`.
+As compression is driver settings dependent, please check your client driver manual. See `ScyllaDB Drivers <https://docs.scylladb.com/stable/drivers/index.html>`_.
 
 
 Connectivity
@@ -130,7 +130,7 @@ Connectivity
 Drivers Settings
 ================
 
-* Use shard aware drivers wherever possible. :doc:`ScyllaDB Drivers </using-scylla/drivers/index>` (not third-party drivers) are shard aware.
+* Use shard aware drivers wherever possible. `ScyllaDB Drivers <https://docs.scylladb.com/stable/drivers/index.html>`_ (not third-party drivers) are shard aware.
 * Configure connection pool - open more connections (>3 per shard) and/Or more clients. See `this blog <https://www.scylladb.com/2019/11/20/maximizing-performance-via-concurrency-while-minimizing-timeouts-in-distributed-databases/>`_.
 
 Management

docs/troubleshooting/timeouts.rst

@@ -25,8 +25,8 @@ Actions
 
 If your cluster is having timeouts during overload, check first if you are not making the overload situation worse through retries, and pay attention to the following:
 
-* Make sure the client retries only after the server has already timed out. Depending on the application this may mean increasing the client-side timeout or decreasing the server-side timeout. Client timeouts are configured by the driver, check your :doc:`driver documentation </using-scylla/drivers/index>` about parameters and defaults. For the server-side timeout, the ``/etc/scylla/scylla.yaml`` has request-specific timeout settings like ``read_request_timeout_in_ms`` and ``write_request_timeout_in_ms``
-* Make sure the client neither runs a speculative retry nor runs it very aggressively. Client-side speculative retry is configured by the driver, check your :doc:`driver documentation </using-scylla/drivers/index>` about parameters and defaults.
+* Make sure the client retries only after the server has already timed out. Depending on the application this may mean increasing the client-side timeout or decreasing the server-side timeout. Client timeouts are configured by the driver, check your `driver documentation <https://docs.scylladb.com/stable/drivers/index.html>`_ about parameters and defaults. For the server-side timeout, the ``/etc/scylla/scylla.yaml`` has request-specific timeout settings like ``read_request_timeout_in_ms`` and ``write_request_timeout_in_ms``
+* Make sure the client neither runs a speculative retry nor runs it very aggressively. Client-side speculative retry is configured by the driver, check your `driver documentation <https://docs.scylladb.com/stable/drivers/index.html>`_ about parameters and defaults.
 * Make sure the server neither runs speculative retry nor runs it based on percentiles (as those can fluctuate aggressively). Server-side speculative retries are a per-table setting that can be changed with the ALTER TABLE command. See the :ref:`documentation <speculative-retry-options>` for details.
 
 

docs/upgrade/about-upgrade.rst

@@ -9,9 +9,19 @@ To ensure a successful upgrade, follow
 the :doc:`documented upgrade procedures <upgrade-guides/index>` tested by
 ScyllaDB. This means that:
 
-* You should perform the upgrades consecutively - to each successive X.Y
-  version, **without skipping any major or minor version**, unless there is
-  a documented upgrade procedure to bypass a version.
+* You should follow the upgrade policy:
+
+   * Starting with version **2025.4**, upgrades can skip minor versions as long
+     as they remain within the same major version (for example, upgrading directly
+     from 2025.1 → 2025.4 is supported).
+   * For versions **prior to 2025.4**, upgrades must be performed consecutively—
+     each successive X.Y version must be installed in order, **without skipping
+     any major or minor version** (for example, upgrading directly from 2025.1 → 2025.3
+     is not supported).
+   * You cannot skip major versions. Upgrades must move from one major version to
+     the next using the documented major-version upgrade path.
+   * You should upgrade to a supported version of ScyllaDB.
+     See `ScyllaDB Version Support <https://docs.scylladb.com/stable/versioning/version-support.html>`_.
 * Before you upgrade to the next version, the whole cluster (each node) must
   be upgraded to the previous version.
 * You cannot perform an upgrade by replacing the nodes in the cluster with new

docs/using-scylla/drivers/cql-drivers/index.rst

@@ -1,141 +0,0 @@
-=====================
-ScyllaDB CQL Drivers
-=====================
-
-.. toctree::
-   :titlesonly:
-   :hidden:
-
-   scylla-python-driver
-   scylla-java-driver
-   scylla-go-driver
-   scylla-gocqlx-driver
-   scylla-cpp-driver
-   scylla-rust-driver
-
-ScyllaDB Drivers
------------------
-
-The following ScyllaDB drivers are available:
-
-* :doc:`Python Driver</using-scylla/drivers/cql-drivers/scylla-python-driver>`
-* :doc:`Java Driver </using-scylla/drivers/cql-drivers/scylla-java-driver>`
-* :doc:`Go Driver </using-scylla/drivers/cql-drivers/scylla-go-driver>`
-* :doc:`Go Extension </using-scylla/drivers/cql-drivers/scylla-gocqlx-driver>`
-* :doc:`C++ Driver </using-scylla/drivers/cql-drivers/scylla-cpp-driver>`
-* `CPP-over-Rust Driver <https://cpp-rust-driver.docs.scylladb.com/>`_
-* :doc:`Rust Driver </using-scylla/drivers/cql-drivers/scylla-rust-driver>`
-* `C# Driver <https://csharp-driver.docs.scylladb.com/>`_
-
-We recommend using ScyllaDB drivers. All ScyllaDB drivers are shard-aware and provide additional 
-benefits over third-party drivers.
-
-ScyllaDB supports the CQL binary protocol version 3, so any Apache Cassandra/CQL driver that implements 
-the same version works with ScyllaDB.
-
-CDC Integration with ScyllaDB Drivers
--------------------------------------------
-
-The following table specifies which ScyllaDB drivers include a library for
-:doc:`CDC </features/cdc/cdc-intro>`.
-
-.. list-table:: 
-   :widths: 40 60
-   :header-rows: 1
-
-   * - ScyllaDB Driver
-     - CDC Connector
-   * - :doc:`Python </using-scylla/drivers/cql-drivers/scylla-python-driver>`
-     - |x| 
-   * - :doc:`Java </using-scylla/drivers/cql-drivers/scylla-java-driver>`
-     - |v|
-   * - :doc:`Go </using-scylla/drivers/cql-drivers/scylla-go-driver>`
-     - |v|
-   * - :doc:`Go Extension </using-scylla/drivers/cql-drivers/scylla-gocqlx-driver>`
-     - |x| 
-   * - :doc:`C++ </using-scylla/drivers/cql-drivers/scylla-cpp-driver>`
-     - |x| 
-   * - `CPP-over-Rust Driver <https://cpp-rust-driver.docs.scylladb.com/>`_
-     - |x|
-   * - :doc:`Rust </using-scylla/drivers/cql-drivers/scylla-rust-driver>`
-     - |v|
-   * - `C# Driver <https://csharp-driver.docs.scylladb.com/>`_
-     - |x| 
-
-Support for Tablets
--------------------------
-
-The following table specifies which ScyllaDB drivers support
-:doc:`tablets </architecture/tablets>` and since which version.
-
-.. list-table:: 
-   :widths: 30 35 35
-   :header-rows: 1
-
-   * - ScyllaDB Driver
-     - Support for Tablets
-     - Since Version
-   * - :doc:`Python</using-scylla/drivers/cql-drivers/scylla-python-driver>`
-     - |v| 
-     - 3.26.5
-   * - :doc:`Java </using-scylla/drivers/cql-drivers/scylla-java-driver>`
-     - |v| 
-     - 4.18.0 (Java Driver 4.x)
-
-       3.11.5.2 (Java Driver 3.x)
-   * - :doc:`Go </using-scylla/drivers/cql-drivers/scylla-go-driver>`
-     - |v|
-     - 1.13.0
-   * - :doc:`Go Extension </using-scylla/drivers/cql-drivers/scylla-gocqlx-driver>`
-     - |x| 
-     - N/A
-   * - :doc:`C++ </using-scylla/drivers/cql-drivers/scylla-cpp-driver>`
-     - |x| 
-     - N/A
-   * - `CPP-over-Rust Driver <https://cpp-rust-driver.docs.scylladb.com/>`_
-     - |v|
-     - All versions
-   * - :doc:`Rust </using-scylla/drivers/cql-drivers/scylla-rust-driver>`
-     - |v| 
-     - 0.13.0
-   * - `C# Driver <https://csharp-driver.docs.scylladb.com/>`_
-     - |v|
-     - All versions
-
-Driver Support Policy
--------------------------------
-
-We support the **two most recent minor releases** of our drivers.
-
-* We test and validate the latest two minor versions.
-* We typically patch only the latest minor release.
-
-We recommend staying up to date with the latest supported versions to receive
-updates and fixes.
-
-At a minimum, upgrade your driver when upgrading to a new ScyllaDB version
-to ensure compatibility between the driver and the database.
-
-Third-party Drivers
-----------------------
-
-You can find the third-party driver documentation on the GitHub pages for each driver:
-
-* `DataStax Java Driver <https://github.com/datastax/java-driver/>`_
-* `DataStax Python Driver <https://github.com/datastax/python-driver/>`_
-* `DataStax C# Driver <https://github.com/datastax/csharp-driver/>`_
-* `DataStax Ruby Driver <https://github.com/datastax/ruby-driver/>`_
-* `DataStax Node.js Driver <https://github.com/datastax/nodejs-driver/>`_
-* `DataStax C++ Driver <https://github.com/datastax/cpp-driver/>`_
-* `DataStax PHP Driver (Supported versions: 7.1)  <https://github.com/datastax/php-driver>`_
-* `He4rt PHP Driver (Supported versions: 8.1 and 8.2)  <https://github.com/he4rt/scylladb-php-driver/>`_
-* `Scala Phantom Project <https://github.com/outworkers/phantom>`_
-* `Xandra Elixir Driver <https://github.com/lexhide/xandra>`_
-* `Exandra Elixir Driver <https://github.com/vinniefranco/exandra>`_
-
-Learn about ScyllaDB Drivers on ScyllaDB University
-----------------------------------------------------
-
-  The free `Using ScyllaDB Drivers course <https://university.scylladb.com/courses/using-scylla-drivers/>`_ 
-  on ScyllaDB University covers the use of drivers in multiple languages to interact with a ScyllaDB 
-  cluster. The languages covered include Java, CPP, Rust, Golang, Python, Node.JS, Scala, and others.

docs/using-scylla/drivers/cql-drivers/scylla-cpp-driver.rst

@@ -1,16 +0,0 @@
-===================
-ScyllaDB C++ Driver
-===================
-
-The ScyllaDB C++ driver is a modern, feature-rich and **shard-aware** C/C++ client library for ScyllaDB using exclusively Cassandra’s binary protocol and Cassandra Query Language v3.
-This driver is forked from Datastax cpp-driver.
-
-Read the `documentation <https://cpp-driver.docs.scylladb.com>`_ to get started or visit the Github project `ScyllaDB C++ driver <https://github.com/scylladb/cpp-driver>`_.
-
-
-More Information
-----------------
-
-* `C++ Driver Documentation <https://cpp-driver.docs.scylladb.com>`_
-* `C/C++ Driver course at ScyllaDB University <https://university.scylladb.com/courses/using-scylla-drivers/lessons/cpp-driver-part-1/>`_
-* `Blog: A Shard-Aware ScyllaDB C/C++ Driver <https://www.scylladb.com/2021/03/18/a-shard-aware-scylla-c-c-driver/>`_

docs/using-scylla/drivers/cql-drivers/scylla-go-driver.rst

@@ -1,28 +0,0 @@
-==================
-ScyllaDB Go Driver
-==================
-
-The `ScyllaDB Go driver <https://github.com/scylladb/gocql>`_ is shard aware and contains extensions for a tokenAwareHostPolicy supported by ScyllaDB 2.3 and onwards.
-It is is a fork of the `GoCQL Driver <https://github.com/gocql/gocql>`_ but has been enhanced with capabilities that take advantage of ScyllaDB's unique architecture.
-Using this policy, the driver can select a connection to a particular shard based on the shard’s token. 
-As a result, latency is significantly reduced because there is no need to pass data between the shards. 
-
-The protocol extension spec is `available here <https://github.com/scylladb/scylla/blob/master/docs/dev/protocol-extensions.md>`_. 
-The ScyllaDB Go Driver is a drop-in replacement for gocql. 
-As such, no code changes are needed to use this driver. 
-All you need to do is rebuild using the ``replace`` directive in your ``mod`` file.
-
-**To download and install the driver**, visit the `Github project <https://github.com/scylladb/gocql>`_.
-
-
-Using CDC with Go
------------------
-
-When writing applications, you can now use our `Go Library <https://github.com/scylladb/scylla-cdc-go>`_ to simplify writing applications that read from ScyllaDB CDC.
-
-More information 
-----------------
-
-* `ScyllaDB Gocql Driver project page on GitHub <https://github.com/scylladb/gocql>`_ - contains the source code as well as a readme and documentation files.
-* `ScyllaDB University: Golang and ScyllaDB <https://university.scylladb.com/courses/using-scylla-drivers/lessons/golang-and-scylla-part-1/>`_
-   A three-part lesson with in-depth examples from  executing a few basic CQL statements with a ScyllaDB cluster using the Gocql driver, to the different data types that you can use in your database tables and how to store these binary files in ScyllaDB with a simple Go application.

docs/using-scylla/drivers/cql-drivers/scylla-gocqlx-driver.rst

@@ -1,16 +0,0 @@
-=========================
-ScyllaDB Gocql Extension 
-=========================
-
-The ScyllaDB Gocqlx is an extension to gocql that provides usability features. 
-With gocqlx, you can bind the query parameters from maps and structs, use named query parameters (``:identifier``), and scan the query results into structs and slices. 
-The driver includes a fluent and flexible CQL query builder and a database migrations module.
-
-
-
-More information 
-----------------
-
-* `ScyllaDB Gocqlx Driver project page on GitHub <https://github.com/scylladb/gocqlx>`_ - contains the source code as well as a readme and documentation files.
-* `ScyllaDB University: Golang and ScyllaDB Part 3 – GoCQLX <https://university.scylladb.com/courses/using-scylla-drivers/lessons/golang-and-scylla-part-3-gocqlx/>`_ -  part three of the Golang three-part course which focuses on how to create a sample Go application that executes a few basic CQL statements with a ScyllaDB cluster using the GoCQLX package
-

docs/using-scylla/drivers/cql-drivers/scylla-java-driver.rst

@@ -1,31 +0,0 @@
-=====================
-ScyllaDB Java Driver 
-=====================
-
-ScyllaDB Java Driver is forked from `DataStax Java Driver <https://github.com/datastax/java-driver>`_ with enhanced capabilities, taking advantage of ScyllaDB's unique architecture.
-
-The ScyllaDB Java driver is shard aware and contains extensions for a ``tokenAwareHostPolicy``.
-Using this policy, the driver can select a connection to a particular shard based on the shard’s token. 
-As a result, latency is significantly reduced because there is no need to pass data between the shards. 
-
-Use the ScyllaDB Java driver for better compatibility and support for ScyllaDB with Java-based applications.
-
-Read the `documentation <https://java-driver.docs.scylladb.com/>`_ to get started or visit the `Github project <https://github.com/scylladb/java-driver>`_.
-
-The driver architecture is based on layers. At the bottom lies the driver core. 
-This core handles everything related to the connections to a ScyllaDB cluster (for example, connection pool, discovering new nodes, etc.) and exposes a simple, relatively low-level API on top of which higher-level layers can be built. 
-
-The ScyllaDB Java Driver is a drop-in replacement for the DataStax Java Driver.
-As such, no code changes are needed to use this driver.
-
-Using CDC with Java
--------------------
-
-When writing applications, you can now use our  `Java Library <https://github.com/scylladb/scylla-cdc-java>`_ to simplify writing applications that read from ScyllaDB CDC.
-
-More information
-----------------
-* `ScyllaDB Java Driver Docs <https://java-driver.docs.scylladb.com/>`_ 
-* `ScyllaDB Java Driver project page on GitHub <https://github.com/scylladb/java-driver/>`_ - Source Code
-* `ScyllaDB University: Coding with Java <https://university.scylladb.com/courses/using-scylla-drivers/lessons/coding-with-java-part-1/>`_ - a three-part lesson with in-depth examples from  executing a few basic CQL statements with a ScyllaDB cluster using the Java driver, to the different data types that you can use in your database tables and how to store these binary files in ScyllaDB with a simple Java application. 
-

docs/using-scylla/drivers/cql-drivers/scylla-python-driver.rst

@@ -1,20 +0,0 @@
-======================
-ScyllaDB Python Driver
-======================
-
-The ScyllaDB Python driver is shard aware and contains extensions for a ``tokenAwareHostPolicy``.
-Using this policy, the driver can select a connection to a particular shard based on the shard’s token. 
-As a result, latency is significantly reduced because there is no need to pass data between the shards. 
-
-Read the `documentation <https://python-driver.docs.scylladb.com/>`_ to get started or visit the Github project `ScyllaDB Python driver <https://github.com/scylladb/python-driver/>`_.
-
-As the ScyllaDB Python Driver is a drop-in replacement for DataStax Python Driver, no code changes are needed to use the driver. 
-Use the ScyllaDB Python driver for better compatibility and support for ScyllaDB with Python-based applications.
-
-
-More information 
-----------------
-
-* `ScyllaDB Python Driver Documentation <https://python-driver.docs.scylladb.com/>`_
-* `ScyllaDB Python Driver on GitHub <https://github.com/scylladb/python-driver/>`_
-* `ScyllaDB University: Coding with Python <https://university.scylladb.com/courses/using-scylla-drivers/lessons/coding-with-python/>`_ 

docs/using-scylla/drivers/cql-drivers/scylla-rust-driver.rst

@@ -1,24 +0,0 @@
-=====================
-ScyllaDB Rust Driver
-=====================
-
-The ScyllaDB Rust driver is a client-side, shard-aware driver written in pure Rust with a fully async API using Tokio.
-Optimized for ScyllaDB, the driver is also compatible with Apache Cassandra®.
-
-
-.. image:: ./images/monster-rust.png
-   :width: 150pt
-
-
-**To download and install the driver**, visit the `Github project <https://github.com/scylladb/scylla-rust-driver>`_.
-
-Read the `Documentation <https://rust-driver.docs.scylladb.com>`_.
-
-Using CDC with Rust
-----------------------
-
-When writing applications, you can use ScyllaDB's `Rust CDC Library <https://github.com/scylladb/scylla-cdc-rust>`_ 
-to simplify writing applications that read from ScyllaDB's CDC.
-
-Use `Rust CDC Library <https://github.com/scylladb/scylla-cdc-rust>`_ to read 
-:doc:`ScyllaDB's CDC </features/cdc/index>` update streams.

docs/using-scylla/drivers/dynamo-drivers/index.rst

@@ -1,9 +0,0 @@
-========================
-AWS DynamoDB Drivers
-========================
-
-
-
-
-ScyllaDB AWS DynamoDB Compatible API can be used with any AWS DynamoDB Driver.
-For a list of AWS AWS DynamoDB drivers see `here <https://docs.aws.amazon.com/amazondynamodb/latest/developerguide/GettingStarted.html>`_

docs/using-scylla/drivers/index.rst

@@ -1,21 +0,0 @@
-================
-ScyllaDB Drivers
-================
-
-.. toctree::
-   :titlesonly:
-   :hidden:
-
-   ScyllaDB CQL Drivers <cql-drivers/index>
-   ScyllaDB DynamoDB Drivers <dynamo-drivers/index>
-
-
-
-You can use ScyllaDB with:
-
-* :doc:`Apache Cassandra CQL Compatible Drivers <cql-drivers/index>`
-* :doc:`Amazon DynamoDB Compatible API Drivers <dynamo-drivers/index>`
-
-Additional drivers coming soon!
-
-If you are looking for a ScyllaDB Integration Solution or a Connector, refer to :doc:`ScyllaDB Integrations </using-scylla/integrations/index>`.

docs/using-scylla/index.rst

@@ -9,7 +9,7 @@ ScyllaDB for Developers
    Tutorials and Example Projects <https://docs.scylladb.com/stable/get-started/develop-with-scylladb/tutorials-example-projects.html>
    Learn to Use ScyllaDB <https://docs.scylladb.com/stable/get-started/learn-resources/index.html>
    ScyllaDB Alternator <alternator/index>
-   ScyllaDB Drivers <drivers/index>
+   ScyllaDB Drivers <https://docs.scylladb.com/stable/drivers/index.html>
 
 
 .. panel-box::
@@ -26,7 +26,7 @@ ScyllaDB for Developers
   :id: "getting-started"
   :class: my-panel
 
-  * :doc:`ScyllaDB Drivers </using-scylla/drivers/index>` - ScyllaDB and third-party drivers for CQL and DynamoDB
+  * `ScyllaDB Drivers <https://docs.scylladb.com/stable/drivers/index.html>`_ - ScyllaDB and third-party drivers for CQL and DynamoDB
   * :doc:`ScyllaDB Alternator </using-scylla/alternator/index>` - The Open Source DynamoDB-compatible API
   * :doc:`CQL Reference </cql/index>` - Reference for the Apache Cassandra Query Language (CQL) and its ScyllaDB extensions
 

docs/using-scylla/integrations/index.rst

@@ -28,7 +28,7 @@ ScyllaDB Integrations and Connectors
   :class: my-panel
 
 
-  ScyllaDB is Apache Cassandra compatible at the CQL binary protocol level, and any driver which uses CQL will work with ScyllaDB (more :doc:`here </using-scylla/drivers/index>`). 
+  ScyllaDB is Apache Cassandra compatible at the CQL binary protocol level, and any driver which uses CQL will work with ScyllaDB. See `ScyllaDB Drivers <https://docs.scylladb.com/stable/drivers/index.html>`_.
   Any application which uses a CQL driver will work with ScyllaDB.
 
   The list below contains links to integration projects using ScyllaDB with third-party projects. 

docs/using-scylla/integrations/integration-databricks.rst

@@ -2,7 +2,7 @@
 Integrate ScyllaDB with Databricks
 ==================================
 
-ScyllaDB is Apache Cassandra compatible at the CQL binary protocol level, and any driver which uses CQL will work with ScyllaDB (more :doc:`here </using-scylla/drivers/index>`). Any application which uses a CQL driver will work with ScyllaDB, for example, Databricks Spark cluster. 
+ScyllaDB is Apache Cassandra compatible at the CQL binary protocol level, and any driver which uses CQL will work with ScyllaDB. See `ScyllaDB Drivers <https://docs.scylladb.com/stable/drivers/index.html>`_. Any application which uses a CQL driver will work with ScyllaDB, for example, Databricks Spark cluster. 
 
 Resource list
 -------------

docs/using-scylla/integrations/integration-elasticsearch.rst

@@ -3,7 +3,7 @@ Integrate ScyllaDB with Elasticsearch
 =====================================
 
 
-ScyllaDB is Apache Cassandra compatible at the CQL binary protocol level, and any driver which uses CQL will work with ScyllaDB (more :doc:`here </using-scylla/drivers/index>`). Any application which uses a CQL driver will work with ScyllaDB.
+ScyllaDB is Apache Cassandra compatible at the CQL binary protocol level, and any driver which uses CQL will work with ScyllaDB. See `ScyllaDB Drivers <https://docs.scylladb.com/stable/drivers/index.html>`_. Any application which uses a CQL driver will work with ScyllaDB.
 
 The list below contains integration projects using ScyllaDB with Elasticsearch. If you have tested your application with ScyllaDB and want to publish the results, contact us using the `community forum <https://forum.scylladb.com>`_.
 

docs/using-scylla/integrations/integration-jaeger.rst

@@ -13,11 +13,11 @@ The Jaeger Query service offers a web-based UI and API for users to explore, vis
 Jaeger also supports integration with other observability tools like Prometheus and Grafana,
 making it a popular choice for monitoring modern distributed applications.
 
-Jaeger Server `can also be run <https://github.com/jaegertracing/jaeger/tree/main/plugin/storage/scylladb>`_ with ScyllaDB as the storage backend, thanks to ScyllaDB's compatibility with Cassandra.
+Jaeger Server `can also be run <https://www.jaegertracing.io/docs/2.11/storage/cassandra/#compatible-backends>`_ with ScyllaDB as the storage backend, thanks to ScyllaDB's compatibility with Cassandra.
 As a drop-in replacement for Cassandra, ScyllaDB implements the same protocol and provides a high-performance,
 low-latency alternative. This compatibility allows Jaeger users to easily switch to ScyllaDB without making significant changes to their setup.
 
 Using ScyllaDB as the storage backend for Jaeger Server can offer additional benefits,
 such as improved performance, scalability, and resource efficiency.
 This makes Jaeger even more effective for monitoring and troubleshooting distributed applications,
-especially in high-traffic, demanding environments where a high-performance storage solution is critical.
+especially in high-traffic, demanding environments where a high-performance storage solution is critical.

docs/using-scylla/integrations/integration-spark.rst

@@ -3,7 +3,7 @@ Integrate ScyllaDB with Spark
 =============================
 
 
-ScyllaDB is Apache Cassandra compatible at the CQL binary protocol level, and any driver which uses CQL will work with ScyllaDB (more :doc:`here </using-scylla/drivers/index>`). Any application which uses a CQL driver will work with ScyllaDB.
+ScyllaDB is Apache Cassandra compatible at the CQL binary protocol level, and any driver which uses CQL will work with ScyllaDB. See `ScyllaDB Drivers <https://docs.scylladb.com/stable/drivers/index.html>`_. Any application which uses a CQL driver will work with ScyllaDB.
 
 The list below contains integration projects using ScyllaDB with Spark. If you have tested your application with ScyllaDB and want to publish the results, contact us using the `community forum <https://forum.scylladb.com>`_.
 

ent/encryption/azure_host.cc

@@ -15,6 +15,7 @@
 #include "db/config.hh"
 #include "utils/log.hh"
 #include "utils/hash.hh"
+#include "utils/http.hh"
 #include "utils/rjson.hh"
 #include "utils/base64.hh"
 #include "utils/loading_cache.hh"
@@ -267,7 +268,6 @@ std::tuple<std::string, std::string> azure_host::impl::parse_key(std::string_vie
 
 std::tuple<std::string, std::string, unsigned> azure_host::impl::parse_vault(std::string_view vault) {
     static const boost::regex vault_name_re(R"([a-zA-Z0-9-]+)");
-    static const boost::regex vault_endpoint_re(R"((https?)://([^/:]+)(?::(\d+))?)");
 
     boost::smatch match;
     std::string tmp{vault};
@@ -277,16 +277,12 @@ std::tuple<std::string, std::string, unsigned> azure_host::impl::parse_vault(std
         return {"https", fmt::format(AKV_HOST_TEMPLATE, vault), 443};
     }
 
-    if (boost::regex_match(tmp, match, vault_endpoint_re)) {
-        std::string scheme = match[1];
-        std::string host = match[2];
-        std::string port_str = match[3];
-
-        unsigned port = (port_str.empty()) ? (scheme == "https" ? 443 : 80) : std::stoi(port_str);
-        return {scheme, host, port};
+    try {
+        auto info = utils::http::parse_simple_url(tmp);
+        return {info.scheme, info.host, info.port};
+    } catch (...) {
+        std::throw_with_nested(std::invalid_argument(fmt::format("Invalid vault '{}'. Must be either a name or an endpoint in format: http(s)://<host>[:port]", vault)));
     }
-
-    throw std::invalid_argument(fmt::format("Invalid vault '{}'. Must be either a name or an endpoint in format: http(s)://<host>[:port]", vault));
 }
 
 future<shared_ptr<tls::certificate_credentials>> azure_host::impl::make_creds() {

ent/encryption/encryption.cc

@@ -816,6 +816,7 @@ public:
     future<data_sink> wrap_sink(const sstables::sstable& sst, sstables::component_type type, data_sink sink) override {
         switch (type) {
         case sstables::component_type::Scylla:
+        case sstables::component_type::TemporaryScylla:
         case sstables::component_type::TemporaryTOC:
         case sstables::component_type::TOC:
             co_return sink;
@@ -844,6 +845,7 @@ public:
                                                          sstables::component_type type,
                                                          data_source src) override {
         switch (type) {
+        case sstables::component_type::TemporaryScylla:
         case sstables::component_type::Scylla:
         case sstables::component_type::TemporaryTOC:
         case sstables::component_type::TOC:

ent/encryption/gcp_host.cc

@@ -36,6 +36,7 @@
 #include "encryption_exceptions.hh"
 #include "symmetric_key.hh"
 #include "utils.hh"
+#include "utils/exponential_backoff_retry.hh"
 #include "utils/hash.hh"
 #include "utils/loading_cache.hh"
 #include "utils/UUID.hh"
@@ -163,6 +164,8 @@ private:
     shared_ptr<seastar::tls::certificate_credentials> _creds;
     std::unordered_map<bytes, shared_ptr<symmetric_key>> _cache;
     bool _initialized = false;
+
+    abort_source _as;
 };
 
 template<typename T, typename C>
@@ -251,24 +254,50 @@ future<rjson::value> encryption::gcp_host::impl::gcp_auth_post_with_retry(std::s
 
     auto& creds = i->second;
 
-    int retries = 0;
+    static constexpr auto max_retries = 10;
 
-    for (;;) {
-        try {
-            co_await creds.refresh(KMS_SCOPE, _certs);
-        } catch (...) {
-            std::throw_with_nested(permission_error("Error refreshing credentials"));
+    exponential_backoff_retry exr(10ms, 10000ms);
+    bool do_backoff = false;
+    bool did_auth_retry = false;
+
+    for (int retry = 0; ; ++retry) {
+        if (std::exchange(do_backoff, false)) {
+            co_await exr.retry(_as);
         }
 
+        bool refreshing = true;
+
         try {
+            co_await creds.refresh(KMS_SCOPE, _certs);
+            refreshing = false;
+
             auto res = co_await send_request(uri, _certs, body, httpd::operation_type::POST, key_values({
                 { utils::gcp::AUTHORIZATION, utils::gcp::format_bearer(creds.token) },
-            }));
+            }), &_as);
             co_return res;
         } catch (httpd::unexpected_status_error& e) {
             gcp_log.debug("{}: Got unexpected response: {}", uri, e.status());
-            if (e.status() == http::reply::status_type::unauthorized && retries++ < 3) {
-                // refresh access token and retry.
+            switch (e.status()) {
+            default:
+                if (http::reply::classify_status(e.status()) != http::reply::status_class::server_error) {
+                    break;
+                }
+                [[fallthrough]];
+            case httpclient::reply_status::request_timeout:
+                if (retry < max_retries) {
+                    // service unavailable etc -> backoff + retry
+                    do_backoff = true;
+                    did_auth_retry = false; // reset this, since we might cause expiration due to backoff (not really, but...)
+                    continue;
+                } 
+                break;
+            }
+            if (refreshing) {
+                std::throw_with_nested(permission_error("Error refreshing credentials"));
+            }
+            if (e.status() == http::reply::status_type::unauthorized && retry < max_retries && !did_auth_retry) {
+                // refresh access token and retry. no backoff
+                did_auth_retry = true;
                 continue;
             }
             if (e.status() == http::reply::status_type::unauthorized) {
@@ -322,6 +351,7 @@ future<> encryption::gcp_host::impl::init() {
 }
 
 future<> encryption::gcp_host::impl::stop() {
+    _as.request_abort();
     co_await _attr_cache.stop();
     co_await _id_cache.stop();
 }

ent/encryption/kmip_host.cc

@@ -38,6 +38,7 @@
 #include "utils/loading_cache.hh"
 #include "utils/UUID.hh"
 #include "utils/UUID_gen.hh"
+#include "utils/http.hh"
 #include "marshal_exception.hh"
 #include "db/config.hh"
 
@@ -322,17 +323,26 @@ future<> kmip_host::impl::connection::connect() {
         f = f.then([this, cred] {
             return cred->set_x509_trust_file(_options.truststore, seastar::tls::x509_crt_format::PEM);
         });
+    } else {
+        f = f.then([cred] {
+            return cred->set_system_trust();
+        });
     }
     return f.then([this, cred] {
         // TODO, find if we should do hostname verification
         // TODO: connect all failovers already?
 
-        auto i = _host.find_last_of(':');
-        auto name = _host.substr(0, i);
-        auto port = i != sstring::npos ? std::stoul(_host.substr(i + 1)) : kmip_port;
+        // Use the URL parser to handle ipv6 etc proper.
+        // Turn host arg into a URL.
+        auto info = utils::http::parse_simple_url("kmip://" + _host);
+        auto name = info.host;
+        auto port = info.port != 80 ? info.port : kmip_port;
 
-        return seastar::net::dns::resolve_name(name).then([this, cred, port](seastar::net::inet_address addr) {
-            return seastar::tls::connect(cred, seastar::ipv4_addr{addr, uint16_t(port)}).then([this](seastar::connected_socket s) {
+        return seastar::net::dns::resolve_name(name).then([this, cred, port, name](seastar::net::inet_address addr) {
+            kmip_log.debug("Try connect {}:{}", addr, port);
+            // TODO: should we verify non-numeric hosts here? (opts.server_name)
+            // Adding this might break existing users with half-baked certs.
+            return seastar::tls::connect(cred, seastar::socket_address{addr, uint16_t(port)}).then([this](seastar::connected_socket s) {
                 kmip_log.debug("Successfully connected {}", _host);
                 // #998 Set keepalive to try avoiding connection going stale in between commands.
                 s.set_keepalive_parameters(net::tcp_keepalive_params{60s, 60s, 10});

ent/encryption/kms_host.cc

@@ -35,6 +35,7 @@
 #include "utils/exponential_backoff_retry.hh"
 #include "utils/hash.hh"
 #include "utils/loading_cache.hh"
+#include "utils/http.hh"
 #include "utils/UUID.hh"
 #include "utils/UUID_gen.hh"
 #include "utils/rjson.hh"
@@ -151,15 +152,10 @@ public:
     {
         // check if we have an explicit endpoint set.
         if (!_options.endpoint.empty()) {
-            static std::regex simple_url(R"foo((https?):\/\/(?:([\w\.]+)|\[([\w:]+)\]):?(\d+)?\/?)foo");
-            std::transform(_options.endpoint.begin(), _options.endpoint.end(), _options.endpoint.begin(), ::tolower);
-            std::smatch m;
-            if (!std::regex_match(_options.endpoint, m, simple_url)) {
-                throw std::invalid_argument(fmt::format("Could not parse URL: {}", _options.endpoint));
-            }
-            _options.https = m[1].str() == "https";
-            _options.host = m[2].length() > 0 ? m[2].str() : m[3].str();
-            _options.port = m[4].length() > 0 ? std::stoi(m[4].str()) : 0;
+            auto info = utils::http::parse_simple_url(_options.endpoint);
+            _options.https = info.is_https();
+            _options.host = info.host;
+            _options.port = info.port;
         }
         if (_options.endpoint.empty() && _options.host.empty() && _options.aws_region.empty() && !_options.aws_use_ec2_region) {
             throw std::invalid_argument("No AWS region or endpoint specified");

idl/raft.idl.hh

@@ -129,6 +129,6 @@ struct direct_fd_ping_reply {
     std::variant<std::monostate, service::wrong_destination, service::group_liveness_info> result;
 };
 
-verb [[with_client_info, cancellable]] direct_fd_ping (raft::server_id dst_id) -> service::direct_fd_ping_reply;
+verb [[with_client_info, with_timeout, cancellable]] direct_fd_ping (raft::server_id dst_id) -> service::direct_fd_ping_reply;
 
 } // namespace service

install-dependencies.sh

@@ -55,6 +55,7 @@ debian_base_packages=(
     librapidxml-dev
     libcrypto++-dev
     libxxhash-dev
+    zlib1g-dev
     slapd
     ldap-utils
     libcpp-jwt-dev
@@ -117,6 +118,7 @@ fedora_packages=(
     makeself
     libzstd-static libzstd-devel
     lz4-static lz4-devel
+    zlib-ng-compat-devel
     rpm-build
     devscripts
     debhelper

install.sh

@@ -157,6 +157,7 @@ adjust_bin() {
 export GNUTLS_SYSTEM_PRIORITY_FILE="\${GNUTLS_SYSTEM_PRIORITY_FILE-$prefix/libreloc/gnutls.config}"
 export LD_LIBRARY_PATH="$prefix/libreloc"
 export UBSAN_OPTIONS="${UBSAN_OPTIONS:+$UBSAN_OPTIONS:}suppressions=$prefix/libexec/ubsan-suppressions.supp"
+${p11_trust_paths:+export SCYLLA_P11_TRUST_PATHS="$p11_trust_paths"}
 exec -a "\$0" "$prefix/libexec/$bin" "\$@"
 EOF
     chmod 755 "$root/$prefix/bin/$bin"
@@ -330,7 +331,6 @@ if ! $nonroot; then
     rsysconfdir=$(realpath -m "$root/$sysconfdir")
     rusr=$(realpath -m "$root/usr")
     rsystemd=$(realpath -m "$rusr/lib/systemd/system")
-    rshare="$rprefix/share"
     rdoc="$rprefix/share/doc"
     rdata=$(realpath -m "$root/var/lib/scylla")
     rhkdata=$(realpath -m "$root/var/lib/scylla-housekeeping")
@@ -338,7 +338,6 @@ else
     retc="$rprefix/etc"
     rsysconfdir="$rprefix/$sysconfdir"
     rsystemd="$HOME/.config/systemd/user"
-    rshare="$rprefix/share"
     rdoc="$rprefix/share/doc"
     rdata="$rprefix"
 fi
@@ -522,16 +521,6 @@ PRODUCT="$product"
 EOS
 chmod 644 "$rprefix"/scripts/scylla_product.py
 
-install -d -m755 "$rshare"/p11-kit/modules
-cat << EOS > "$rshare"/p11-kit/modules/p11-kit-trust.module
-module: $prefix/libreloc/pkcs11/p11-kit-trust.so
-priority: 1
-trust-policy: yes
-x-trust-lookup: pkcs11:library-description=PKCS%2311%20Kit%20Trust%20Module
-disable-in: p11-kit-proxy
-x-init-reserved: paths=$p11_trust_paths
-EOS
-
 if ! $nonroot && ! $without_systemd; then
     install -d -m755 "$retc"/systemd/system/scylla-server.service.d
     install -m644 dist/common/systemd/scylla-server.service.d/dependencies.conf -Dt "$retc"/systemd/system/scylla-server.service.d

main.cc

@@ -10,6 +10,8 @@
 #include <functional>
 #include <fmt/ranges.h>
 
+#include <gnutls/pkcs11.h>
+
 #include <seastar/util/closeable.hh>
 #include <seastar/core/abort_source.hh>
 #include "db/view/view_building_worker.hh"
@@ -37,7 +39,6 @@
 #include "api/api_init.hh"
 #include "db/config.hh"
 #include "db/extensions.hh"
-#include "db/legacy_schema_migrator.hh"
 #include "service/storage_service.hh"
 #include "service/migration_manager.hh"
 #include "service/tablet_allocator.hh"
@@ -118,15 +119,11 @@
 #include "message/dictionary_service.hh"
 #include "sstable_dict_autotrainer.hh"
 #include "utils/disk_space_monitor.hh"
+#include "auth/cache.hh"
 #include "utils/labels.hh"
 #include "tools/utils.hh"
 
 
-#define P11_KIT_FUTURE_UNSTABLE_API
-extern "C" {
-#include <p11-kit/p11-kit.h>
-}
-
 namespace fs = std::filesystem;
 #include <seastar/core/metrics_api.hh>
 #include <seastar/core/relabel_config.hh>
@@ -708,14 +705,6 @@ To start the scylla server proper, simply invoke as: scylla server (or just scyl
         print_starting_message(ac, av, parsed_opts);
     }
 
-    // We have to override p11-kit config path before p11-kit initialization.
-    // And the initialization will invoke on seastar initialization, so it has to
-    // be before app.run()
-    auto scylla_path = fs::read_symlink(fs::path("/proc/self/exe"));
-    auto p11_modules = scylla_path.parent_path().parent_path().append("share/p11-kit/modules");
-    auto p11_modules_str = p11_modules.string<char>();
-    ::p11_kit_override_system_files(NULL, NULL, p11_modules_str.c_str(), NULL, NULL);
-
     sharded<locator::shared_token_metadata> token_metadata;
     sharded<locator::effective_replication_map_factory> erm_factory;
     sharded<service::migration_notifier> mm_notifier;
@@ -727,6 +716,7 @@ To start the scylla server proper, simply invoke as: scylla server (or just scyl
     seastar::sharded<service::cache_hitrate_calculator> cf_cache_hitrate_calculator;
     service::load_meter load_meter;
     sharded<service::storage_proxy> proxy;
+    sharded<auth::cache> auth_cache;
     sharded<service::storage_service> ss;
     sharded<service::migration_manager> mm;
     sharded<tasks::task_manager> task_manager;
@@ -789,7 +779,7 @@ To start the scylla server proper, simply invoke as: scylla server (or just scyl
         return seastar::async([&app, cfg, ext, &disk_space_monitor_shard0, &cm, &sstm, &db, &qp, &bm, &proxy, &mapreduce_service, &mm, &mm_notifier, &ctx, &opts, &dirs,
                 &prometheus_server, &cf_cache_hitrate_calculator, &load_meter, &feature_service, &gossiper, &snitch,
                 &token_metadata, &erm_factory, &snapshot_ctl, &messaging, &sst_dir_semaphore, &raft_gr, &service_memory_limiter,
-                &repair, &sst_loader, &ss, &lifecycle_notifier, &stream_manager, &task_manager, &rpc_dict_training_worker,
+                &repair, &sst_loader, &auth_cache, &ss, &lifecycle_notifier, &stream_manager, &task_manager, &rpc_dict_training_worker,
                 &hashing_worker, &vector_store_client] {
           try {
               if (opts.contains("relabel-config-file") && !opts["relabel-config-file"].as<sstring>().empty()) {
@@ -1650,7 +1640,7 @@ To start the scylla server proper, simply invoke as: scylla server (or just scyl
             fd.start(
                 std::ref(fd_pinger), std::ref(fd_clock),
                 service::direct_fd_clock::base::duration{std::chrono::milliseconds{100}}.count(),
-                service::direct_fd_clock::base::duration{std::chrono::milliseconds{cfg->direct_failure_detector_ping_timeout_in_ms()}}.count()).get();
+                service::direct_fd_clock::base::duration{std::chrono::milliseconds{cfg->direct_failure_detector_ping_timeout_in_ms()}}.count(), dbcfg.gossip_scheduling_group).get();
 
             auto stop_fd = defer_verbose_shutdown("direct_failure_detector", [] {
                 fd.stop().get();
@@ -1802,6 +1792,12 @@ To start the scylla server proper, simply invoke as: scylla server (or just scyl
                 api::unset_server_stream_manager(ctx).get();
             });
 
+            checkpoint(stop_signal, "starting auth cache");
+            auth_cache.start(std::ref(qp)).get();
+            auto stop_auth_cache = defer_verbose_shutdown("auth cache", [&] {
+                auth_cache.stop().get();
+            });
+
             checkpoint(stop_signal, "initializing storage service");
             debug::the_storage_service = &ss;
             ss.start(std::ref(stop_signal.as_sharded_abort_source()),
@@ -1810,6 +1806,7 @@ To start the scylla server proper, simply invoke as: scylla server (or just scyl
                 std::ref(messaging), std::ref(repair),
                 std::ref(stream_manager), std::ref(lifecycle_notifier), std::ref(bm), std::ref(snitch),
                 std::ref(tablet_allocator), std::ref(cdc_generation_service), std::ref(view_builder), std::ref(view_building_worker), std::ref(qp), std::ref(sl_controller),
+                std::ref(auth_cache),
                 std::ref(tsm), std::ref(vbsm), std::ref(task_manager), std::ref(gossip_address_map),
                 compression_dict_updated_callback,
                 only_on_shard0(&*disk_space_monitor_shard0)
@@ -1825,11 +1822,6 @@ To start the scylla server proper, simply invoke as: scylla server (or just scyl
                 ss.stop().get();
             });
 
-            api::set_server_storage_service(ctx, ss, group0_client).get();
-            auto stop_ss_api = defer_verbose_shutdown("storage service API", [&ctx] {
-                api::unset_server_storage_service(ctx).get();
-            });
-
             checkpoint(stop_signal, "initializing query processor remote part");
             // TODO: do this together with proxy.start_remote(...)
             qp.invoke_on_all(&cql3::query_processor::start_remote, std::ref(mm), std::ref(mapreduce_service),
@@ -1858,8 +1850,6 @@ To start the scylla server proper, simply invoke as: scylla server (or just scyl
             group0_client.init().get();
 
             checkpoint(stop_signal, "initializing system schema");
-            // schema migration, if needed, is also done on shard 0
-            db::legacy_schema_migrator::migrate(proxy, db, sys_ks, qp.local()).get();
             db::schema_tables::save_system_schema(qp.local()).get();
             db::schema_tables::recalculate_schema_version(sys_ks, proxy, feature_service.local()).get();
 
@@ -2070,7 +2060,7 @@ To start the scylla server proper, simply invoke as: scylla server (or just scyl
                 maintenance_auth_config.authenticator_java_name = sstring{auth::allow_all_authenticator_name};
                 maintenance_auth_config.role_manager_java_name = sstring{auth::maintenance_socket_role_manager_name};
 
-                maintenance_auth_service.start(perm_cache_config, std::ref(qp), std::ref(group0_client),  std::ref(mm_notifier), std::ref(mm), maintenance_auth_config, maintenance_socket_enabled::yes, std::ref(hashing_worker)).get();
+                maintenance_auth_service.start(perm_cache_config, std::ref(qp), std::ref(group0_client),  std::ref(mm_notifier), std::ref(mm), maintenance_auth_config, maintenance_socket_enabled::yes, std::ref(auth_cache), std::ref(hashing_worker)).get();
 
                 cql_maintenance_server_ctl.emplace(maintenance_auth_service, mm_notifier, gossiper, qp, service_memory_limiter, sl_controller, lifecycle_notifier, *cfg, maintenance_cql_sg_stats_key, maintenance_socket_enabled::yes, dbcfg.statement_scheduling_group);
 
@@ -2184,6 +2174,11 @@ To start the scylla server proper, simply invoke as: scylla server (or just scyl
             // This will also disable migration manager schema pulls if needed.
             group0_service.setup_group0_if_exist(sys_ks.local(), ss.local(), qp.local(), mm.local()).get();
 
+            api::set_server_storage_service(ctx, ss, group0_client).get();
+            auto stop_ss_api = defer_verbose_shutdown("storage service API", [&ctx] {
+                api::unset_server_storage_service(ctx).get();
+            });
+
             with_scheduling_group(maintenance_scheduling_group, [&] {
                 return messaging.invoke_on_all([&] (auto& ms) {
                         return ms.start_listen(token_metadata.local(), [&gossiper] (gms::inet_address ip)  {
@@ -2341,7 +2336,7 @@ To start the scylla server proper, simply invoke as: scylla server (or just scyl
             auth_config.authenticator_java_name = qualified_authenticator_name;
             auth_config.role_manager_java_name = qualified_role_manager_name;
 
-            auth_service.start(std::move(perm_cache_config), std::ref(qp), std::ref(group0_client), std::ref(mm_notifier), std::ref(mm), auth_config, maintenance_socket_enabled::no, std::ref(hashing_worker)).get();
+            auth_service.start(std::move(perm_cache_config), std::ref(qp), std::ref(group0_client), std::ref(mm_notifier), std::ref(mm), auth_config, maintenance_socket_enabled::no, std::ref(auth_cache), std::ref(hashing_worker)).get();
 
             std::any stop_auth_service;
             // Has to be called after node joined the cluster (join_cluster())
@@ -2687,13 +2682,15 @@ int main(int ac, char** av) {
     // #3583 - need to potentially ensure this for tools as well, since at least
     // sstable* might need crypto libraries.
     auto scylla_path = fs::read_symlink(fs::path("/proc/self/exe")); // could just be argv[0] I guess...
-    auto p11_modules = scylla_path.parent_path().parent_path().append("share/p11-kit/modules");
-    // Note: must be in scope for application lifetime. p11_kit_override_system_files does _not_
-    // copy input strings.
-    auto p11_modules_str = p11_modules.string<char>();
-    // #3392 only do this if we are actually packaged and the path exists.
-    if (fs::exists(p11_modules)) {
-        ::p11_kit_override_system_files(NULL, NULL, p11_modules_str.c_str(), NULL, NULL);
+    auto p11_trust_paths_from_env = std::getenv("SCYLLA_P11_TRUST_PATHS");
+    auto trust_module_path = scylla_path.parent_path().parent_path().append("libreloc/pkcs11/p11-kit-trust.so");
+    if (fs::exists(trust_module_path) && p11_trust_paths_from_env) {
+        gnutls_pkcs11_init(GNUTLS_PKCS11_FLAG_MANUAL, nullptr);
+        auto trust_config = fmt::format("p11-kit:paths={} trusted=yes", p11_trust_paths_from_env);
+        auto ret = gnutls_pkcs11_add_provider(trust_module_path.string().c_str(), trust_config.c_str());
+        if (ret != GNUTLS_E_SUCCESS) {
+            startlog.warn("Could not initialize p11-kit trust module: {}\n", gnutls_strerror(ret));
+        }
     }
 
     return main_func(ac, av);

message/messaging_service.cc

@@ -686,6 +686,7 @@ static constexpr unsigned do_get_rpc_client_idx(messaging_verb verb) {
     case messaging_verb::RAFT_MODIFY_CONFIG:
     case messaging_verb::RAFT_PULL_SNAPSHOT:
     case messaging_verb::NOTIFY_BANNED:
+    case messaging_verb::DIRECT_FD_PING:
         // See comment above `TOPOLOGY_INDEPENDENT_IDX`.
         // DO NOT put any 'hot' (e.g. data path) verbs in this group,
         // only verbs which are 'rare' and 'cheap'.
@@ -747,7 +748,6 @@ static constexpr unsigned do_get_rpc_client_idx(messaging_verb verb) {
     case messaging_verb::PAXOS_ACCEPT:
     case messaging_verb::PAXOS_LEARN:
     case messaging_verb::PAXOS_PRUNE:
-    case messaging_verb::DIRECT_FD_PING:
         return 2;
     case messaging_verb::MUTATION_DONE:
     case messaging_verb::MUTATION_FAILED:

mutation/partition_version.cc

@@ -575,10 +575,15 @@ utils::coroutine partition_entry::apply_to_incomplete(const schema& s,
                         }
                         res.row.set_range_tombstone(cur.range_tombstone_for_row() + src_cur.range_tombstone());
 
+                        if (need_preempt()) {
+                            lb = position_in_partition(cur.position());
+                            ++tracker.get_stats().rows_covered_by_range_tombstones_from_memtable;
+                            return stop_iteration::no;
+                        }
+
                         // FIXME: Compact the row
                         ++tracker.get_stats().rows_covered_by_range_tombstones_from_memtable;
                         cur.next();
-                        // FIXME: preempt
                     }
                 }
                 {

node_ops/task_manager_module.cc

@@ -14,6 +14,7 @@
 #include "tasks/task_handler.hh"
 #include "tasks/virtual_task_hint.hh"
 #include "utils/error_injection.hh"
+#include "utils/UUID_gen.hh"
 #include <variant>
 #include "utils/overloaded_functor.hh"
 
@@ -90,6 +91,7 @@ future<std::optional<tasks::task_status>> node_ops_virtual_task::get_status_help
         .scope = "cluster",
         .state = get_state(entry),
         .is_abortable = co_await is_abortable(std::move(hint)),
+        .creation_time = db_clock::time_point(utils::UUID_gen::unix_timestamp(id.uuid())),
         .start_time = entry.start_time,
         .end_time = entry.end_time,
         .error = entry.error,
@@ -167,6 +169,7 @@ future<std::vector<tasks::task_stats>> node_ops_virtual_task::get_stats() {
             .table = "",
             .entity = "",
             .shard = 0,
+            .creation_time = db_clock::time_point(utils::UUID_gen::unix_timestamp(id)),
             .start_time = entry.start_time,
             .end_time = entry.end_time
         };

repair/repair.cc

@@ -2329,11 +2329,7 @@ future<gc_clock::time_point> repair_service::repair_tablet(gms::gossip_address_m
     auto duration = std::chrono::duration<float>(std::chrono::steady_clock::now()- start);
     rlogger.info("repair[{}]: Finished tablet repair for table={}.{} range={} duration={} replicas={} global_tablet_id={} flush_time={}",
             id.uuid(), keyspace_name, table_name, range, duration, replicas, gid, flush_time);
-    if (!flush_time.has_value()) {
-        throw std::runtime_error(format("Batchlog reply failed for table={}.{} range={} replicas={} global_tablet_id={}",
-            id.uuid(), keyspace_name, table_name, range, replicas, gid));
-    }
-    co_return flush_time.value();
+    co_return flush_time;
 }
 
 tasks::is_user_task repair::tablet_repair_task_impl::is_user_task() const noexcept {
@@ -2410,9 +2406,11 @@ future<> repair::tablet_repair_task_impl::run() {
         });
 
         auto parent_shard = this_shard_id();
-        std::vector<std::optional<gc_clock::time_point>> flush_times(smp::count, gc_clock::time_point{});
-        rs.container().invoke_on_all([&idx, &flush_times, id, metas = _metas, parent_data, reason = _reason, tables = _tables, sched_info = sched_info, ranges_parallelism = _ranges_parallelism, parent_shard, topo_guard = _topo_guard, skip_flush = _skip_flush] (repair_service& rs) -> future<> {
+        auto flush_time = _flush_time;
+        auto res = rs.container().map_reduce0([&idx, id, metas = _metas, parent_data, reason = _reason, tables = _tables, sched_info = sched_info, ranges_parallelism = _ranges_parallelism, parent_shard, topo_guard = _topo_guard, skip_flush = _skip_flush] (repair_service& rs) -> future<std::pair<gc_clock::time_point, bool>> {
             std::exception_ptr error;
+            gc_clock::time_point shard_flush_time;
+            bool flush_failed = false;
             for (auto& m : metas) {
                 if (m.master_shard_id != this_shard_id()) {
                     continue;
@@ -2466,27 +2464,24 @@ future<> repair::tablet_repair_task_impl::run() {
                         error = std::move(ep);
                     }
                 }
-                auto current = flush_times[this_shard_id()];
-                if ((needs_flush_before_repair &&!hints_batchlog_flushed) || !current.has_value()) {
-                    flush_times[this_shard_id()] = std::nullopt;
-                } else {
-                    auto time = task->get_flush_time();
-                    flush_times[this_shard_id()] = current == gc_clock::time_point() ? time : std::min(current.value(), time);
-                }
+                auto time = task->get_flush_time();
+                shard_flush_time = shard_flush_time == gc_clock::time_point() ? time : std::min(shard_flush_time, time);
+                flush_failed = flush_failed || (needs_flush_before_repair && !hints_batchlog_flushed);
             }
             if (error) {
                 co_await coroutine::return_exception_ptr(std::move(error));
             }
+            co_return std::make_pair(shard_flush_time, flush_failed);
+        }, std::make_pair<gc_clock::time_point, bool>(std::move(flush_time), false), [] (const auto& p1, const auto& p2) {
+            auto& [time1, failed1] = p1;
+            auto& [time2, failed2] = p2;
+            auto flush_time = time1 == gc_clock::time_point() ? time2 :
+                             (time2 == gc_clock::time_point() ? time1 : std::min(time1, time2));
+            auto failed = failed1 || failed2;
+            return std::make_pair(flush_time, failed);
         }).get();
-        for (auto& time : flush_times) {
-            if (!time.has_value()) {
-                _flush_time = std::nullopt;
-                break;
-            }
-            if (time != gc_clock::time_point()) {
-                _flush_time = _flush_time == gc_clock::time_point() ? time : std::min(_flush_time.value(), time.value());
-            }
-        }
+        _flush_time = res.first;
+        _should_flush_and_flush_failed = res.second;
         auto duration = std::chrono::duration<float>(std::chrono::steady_clock::now() - start_time);
         rlogger.info("repair[{}]: Finished user-requested repair for tablet keyspace={} tables={} repair_id={} tablets_repaired={} duration={}",
                 id.uuid(), _keyspace, _tables, id.id, _metas.size(), duration);

repair/row_level.cc

@@ -2529,7 +2529,7 @@ future<repair_update_system_table_response> repair_service::repair_update_system
         }
     }
     if (req.range.end()) {
-        if (!req.range.end()->is_inclusive()) {
+        if (!req.range.end()->is_inclusive() && req.range.end()->value() != dht::maximum_token()) {
             is_valid_range = false;
         }
     }

repair/task_manager_module.hh

@@ -112,7 +112,8 @@ private:
     optimized_optional<abort_source::subscription> _abort_subscription;
     std::optional<int> _ranges_parallelism;
     size_t _metas_size = 0;
-    std::optional<gc_clock::time_point> _flush_time = gc_clock::time_point();
+    gc_clock::time_point _flush_time = gc_clock::time_point();
+    bool _should_flush_and_flush_failed = false;
     service::frozen_topology_guard _topo_guard;
     bool _skip_flush;
 public:
@@ -134,7 +135,12 @@ public:
         return tasks::is_abortable(!_abort_subscription);
     }
 
-    std::optional<gc_clock::time_point> get_flush_time() const { return _flush_time; }
+    gc_clock::time_point get_flush_time() const {
+        if (_should_flush_and_flush_failed) {
+            throw std::runtime_error(fmt::format("Flush is needed for repair {} with parent {}, but failed", id(), _parent_id));
+        }
+        return _flush_time;
+    }
 
     tasks::is_user_task is_user_task() const noexcept override;
     virtual future<> release_resources() noexcept override;

replica/database.cc

@@ -3704,7 +3704,7 @@ future<utils::chunked_vector<temporary_buffer<char>>> database::sample_data_file
         }), std::ref(state));
 
         // [1, 2, 3, 0] --> [0, 1, 3, 6]
-        std::exclusive_scan(global_offset.begin(), global_offset.end(), global_offset.begin(), 0, std::plus());
+        std::exclusive_scan(global_offset.begin(), global_offset.end(), global_offset.begin(), uint64_t(0), std::plus());
 
         // We can't generate random non-negative integers smaller than 0,
         // so let's just deal with the `total_chunks == 0` case with an early return.

service/direct_failure_detector/failure_detector.cc

@@ -6,6 +6,7 @@
  * SPDX-License-Identifier: LicenseRef-ScyllaDB-Source-Available-1.0
  */
 
+#include "seastar/core/scheduling.hh"
 #include "utils/assert.hh"
 #include <unordered_set>
 
@@ -17,6 +18,7 @@
 #include <seastar/core/condition-variable.hh>
 #include <seastar/coroutine/parallel_for_each.hh>
 #include <seastar/util/defer.hh>
+#include <seastar/coroutine/switch_to.hh>
 
 #include "utils/log.hh"
 
@@ -118,7 +120,7 @@ struct failure_detector::impl {
 
     // Fetches endpoint updates from _endpoint_queue and performs the add/remove operation.
     // Runs on shard 0 only.
-    future<> update_endpoint_fiber();
+    future<> update_endpoint_fiber(seastar::scheduling_group sg);
     future<> _update_endpoint_fiber = make_ready_future<>();
 
     // Workers running on this shard.
@@ -140,7 +142,7 @@ struct failure_detector::impl {
     // The unregistering process requires cross-shard operations which we perform on this fiber.
     future<> _destroy_subscriptions = make_ready_future<>();
 
-    impl(failure_detector& parent, pinger&, clock&, clock::interval_t ping_period, clock::interval_t ping_timeout);
+    impl(failure_detector& parent, pinger&, clock&, clock::interval_t ping_period, clock::interval_t ping_timeout, seastar::scheduling_group sg);
     ~impl();
 
     // Inform update_endpoint_fiber() about an added/removed endpoint.
@@ -177,19 +179,19 @@ struct failure_detector::impl {
 };
 
 failure_detector::failure_detector(
-    pinger& pinger, clock& clock, clock::interval_t ping_period, clock::interval_t ping_timeout)
-        : _impl(std::make_unique<impl>(*this, pinger, clock, ping_period, ping_timeout))
+    pinger& pinger, clock& clock, clock::interval_t ping_period, clock::interval_t ping_timeout, seastar::scheduling_group sg)
+        : _impl(std::make_unique<impl>(*this, pinger, clock, ping_period, ping_timeout, sg))
 {}
 
 failure_detector::impl::impl(
-    failure_detector& parent, pinger& pinger, clock& clock, clock::interval_t ping_period, clock::interval_t ping_timeout)
+    failure_detector& parent, pinger& pinger, clock& clock, clock::interval_t ping_period, clock::interval_t ping_timeout, seastar::scheduling_group sg)
         : _parent(parent), _pinger(pinger), _clock(clock), _ping_period(ping_period), _ping_timeout(ping_timeout) {
     if (this_shard_id() != 0) {
         return;
     }
 
     _num_workers.resize(smp::count, 0);
-    _update_endpoint_fiber = update_endpoint_fiber();
+    _update_endpoint_fiber = update_endpoint_fiber(sg);
 }
 
 void failure_detector::impl::send_update_endpoint(pinger::endpoint_id ep, endpoint_update update) {
@@ -205,9 +207,9 @@ void failure_detector::impl::send_update_endpoint(pinger::endpoint_id ep, endpoi
     _endpoint_changed.signal();
 }
 
-future<> failure_detector::impl::update_endpoint_fiber() {
+future<> failure_detector::impl::update_endpoint_fiber(seastar::scheduling_group sg) {
     SCYLLA_ASSERT(this_shard_id() == 0);
-
+    co_await coroutine::switch_to(sg);
     while (true) {
         co_await _endpoint_changed.wait([this] { return !_endpoint_updates.empty(); });
 
@@ -480,7 +482,7 @@ static future<bool> ping_with_timeout(pinger::endpoint_id id, clock::timepoint_t
         }
     });
 
-    auto f = pinger.ping(id, timeout_as);
+    auto f = pinger.ping(id, timeout, timeout_as, c);
     auto sleep_and_abort = [] (clock::timepoint_t timeout, abort_source& timeout_as, clock& c) -> future<> {
         co_await c.sleep_until(timeout, timeout_as).then_wrapped([&timeout_as] (auto&& f) {
             // Avoid throwing if sleep was aborted.

service/direct_failure_detector/failure_detector.hh

@@ -19,26 +19,6 @@ class abort_source;
 
 namespace direct_failure_detector {
 
-class pinger {
-public:
-    // Opaque endpoint ID.
-    // A specific implementation of `pinger` maps those IDs to 'real' addresses.
-    using endpoint_id = utils::UUID;
-
-    // Send a message to `ep` and wait until it responds.
-    // The wait can be aborted using `as`.
-    // Abort should be signalized with `abort_requested_exception`.
-    //
-    // If the ping fails in an expected way (e.g. the endpoint is down and refuses to connect),
-    // returns `false`. If it succeeds, returns `true`.
-    virtual future<bool> ping(endpoint_id ep, abort_source& as) = 0;
-
-protected:
-    // The `pinger` object must not be destroyed through the `pinger` interface.
-    // `failure_detector` does not take ownership of `pinger`, only a non-owning reference.
-    ~pinger() = default;
-};
-
 // A clock that uses abstract units to measure time.
 // The implementation is responsible for periodically advancing the clock.
 //
@@ -60,12 +40,33 @@ public:
     // Aborts should be signalized using `seastar::sleep_aborted`.
     virtual future<> sleep_until(timepoint_t tp, abort_source& as) = 0;
 
+    virtual std::chrono::milliseconds to_milliseconds(timepoint_t tp) const = 0;
 protected:
     // The `clock` object must not be destroyed through the `clock` interface.
     // `failure_detector` does not take ownership of `clock`, only a non-owning reference.
     ~clock() = default;
 };
 
+class pinger {
+public:
+    // Opaque endpoint ID.
+    // A specific implementation of `pinger` maps those IDs to 'real' addresses.
+    using endpoint_id = utils::UUID;
+
+    // Send a message to `ep` and wait until it responds.
+    // The wait can be aborted using `as`.
+    // Abort should be signalized with `abort_requested_exception`.
+    //
+    // If the ping fails in an expected way (e.g. the endpoint is down and refuses to connect),
+    // returns `false`. If it succeeds, returns `true`.
+    virtual future<bool> ping(endpoint_id ep, clock::timepoint_t timeout, abort_source& as, clock& c) = 0;
+
+protected:
+    // The `pinger` object must not be destroyed through the `pinger` interface.
+    // `failure_detector` does not take ownership of `pinger`, only a non-owning reference.
+    ~pinger() = default;
+};
+
 class listener {
 public:
     // Called when an endpoint in the detected set (added by `failure_detector::add_endpoint`) responds to a ping
@@ -127,7 +128,10 @@ public:
 
         // Duration after which a ping is aborted, so that next ping can be started
         // (pings are sent sequentially).
-        clock::interval_t ping_timeout
+        clock::interval_t ping_timeout,
+
+        // Scheduling group used for fibers inside the failure detector.
+        seastar::scheduling_group sg
     );
 
     ~failure_detector();

service/pager/query_pagers.cc

@@ -301,6 +301,7 @@ protected:
 class ghost_row_deleting_query_pager : public service::pager::query_pager {
     service::storage_proxy& _proxy;
     db::timeout_clock::duration _timeout_duration;
+    size_t _concurrency;
 public:
     ghost_row_deleting_query_pager(schema_ptr s, shared_ptr<const cql3::selection::selection> selection,
                 service::query_state& state,
@@ -309,10 +310,12 @@ public:
                 dht::partition_range_vector ranges,
                 cql3::cql_stats& stats,
                 service::storage_proxy& proxy,
-                db::timeout_clock::duration timeout_duration)
+                db::timeout_clock::duration timeout_duration,
+                size_t concurrency)
         : query_pager(proxy, s, selection, state, options, std::move(cmd), std::move(ranges), std::nullopt)
         , _proxy(proxy)
         , _timeout_duration(timeout_duration)
+        , _concurrency(concurrency)
     {}
     virtual ~ghost_row_deleting_query_pager() {}
 
@@ -322,8 +325,12 @@ public:
             _query_read_repair_decision = qr.read_repair_decision;
             qr.query_result->ensure_counts();
             return seastar::async([this, query_result = std::move(qr.query_result), page_size, now] () mutable -> result<> {
-                handle_result(db::view::delete_ghost_rows_visitor{_proxy, _state, view_ptr(_query_schema), _timeout_duration},
+                std::exception_ptr ex;
+                handle_result(db::view::delete_ghost_rows_visitor{_proxy, _state, view_ptr(_query_schema), _timeout_duration, _concurrency, ex},
                         std::move(query_result), page_size, now);
+                if (ex) {
+                    std::rethrow_exception(ex);
+                }
                 return bo::success();
             });
         }));
@@ -503,7 +510,8 @@ std::unique_ptr<service::pager::query_pager> service::pager::query_pagers::pager
         dht::partition_range_vector ranges,
         cql3::cql_stats& stats,
         storage_proxy& proxy,
-        db::timeout_clock::duration duration) {
+        db::timeout_clock::duration duration,
+        size_t concurrency) {
     return ::make_shared<ghost_row_deleting_query_pager>(std::move(s), std::move(selection), state,
-            options, std::move(cmd), std::move(ranges), stats, proxy, duration);
+            options, std::move(cmd), std::move(ranges), stats, proxy, duration, concurrency);
 }

service/pager/query_pagers.hh

@@ -47,7 +47,8 @@ public:
             dht::partition_range_vector,
             cql3::cql_stats& stats,
             storage_proxy& proxy,
-            db::timeout_clock::duration timeout_duration);
+            db::timeout_clock::duration timeout_duration,
+            size_t concurrency);
 };
 
 }