4606302ead
It's unused, populator uses it to print debugging messages, but it can as well use table->dir() for it, just as sstable_directory does. One message looks useless and is removed. Signed-off-by: Pavel Emelyanov <xemul@scylladb.com> Closes scylladb/scylladb#19113
543 lines
25 KiB
C++
543 lines
25 KiB
C++
/*
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* Copyright (C) 2018-present ScyllaDB
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*/
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/*
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* SPDX-License-Identifier: AGPL-3.0-or-later
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*/
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#include <fmt/std.h>
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#include <seastar/core/coroutine.hh>
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#include <seastar/core/smp.hh>
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#include <seastar/coroutine/maybe_yield.hh>
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#include <seastar/coroutine/parallel_for_each.hh>
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#include <seastar/util/closeable.hh>
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#include "distributed_loader.hh"
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#include "replica/database.hh"
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#include "replica/global_table_ptr.hh"
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#include "db/config.hh"
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#include "db/extensions.hh"
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#include "db/system_keyspace.hh"
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#include "db/system_distributed_keyspace.hh"
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#include "db/schema_tables.hh"
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#include "compaction/compaction_manager.hh"
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#include "compaction/task_manager_module.hh"
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#include "sstables/sstables.hh"
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#include "sstables/sstables_manager.hh"
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#include "sstables/sstable_directory.hh"
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#include "auth/common.hh"
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#include "tracing/trace_keyspace_helper.hh"
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#include "db/view/view_update_checks.hh"
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#include <unordered_map>
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#include <boost/range/adaptor/map.hpp>
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#include "db/view/view_builder.hh"
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extern logging::logger dblog;
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static const std::unordered_set<std::string_view> system_keyspaces = {
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db::system_keyspace::NAME, db::schema_tables::NAME,
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};
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// Not super nice. Adding statefulness to the file.
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static std::unordered_set<sstring> load_prio_keyspaces;
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static bool population_started = false;
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void replica::distributed_loader::mark_keyspace_as_load_prio(const sstring& ks) {
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assert(!population_started);
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load_prio_keyspaces.insert(ks);
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}
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bool is_system_keyspace(std::string_view name) {
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return system_keyspaces.contains(name);
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}
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bool is_load_prio_keyspace(std::string_view name) {
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return load_prio_keyspaces.contains(sstring(name));
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}
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static const std::unordered_set<std::string_view> internal_keyspaces = {
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db::system_distributed_keyspace::NAME,
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db::system_distributed_keyspace::NAME_EVERYWHERE,
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db::system_keyspace::NAME,
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db::schema_tables::NAME,
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auth::meta::legacy::AUTH_KS,
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tracing::trace_keyspace_helper::KEYSPACE_NAME
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};
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bool is_internal_keyspace(std::string_view name) {
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return internal_keyspaces.contains(name);
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}
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namespace replica {
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static io_error_handler error_handler_for_upload_dir() {
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return [] (std::exception_ptr eptr) {
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// do nothing about sstable exception and caller will just rethrow it.
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};
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}
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io_error_handler error_handler_gen_for_upload_dir(disk_error_signal_type& dummy) {
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return error_handler_for_upload_dir();
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}
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future<>
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distributed_loader::process_sstable_dir(sharded<sstables::sstable_directory>& dir, sstables::sstable_directory::process_flags flags) {
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co_await dir.invoke_on(0, [flags] (sstables::sstable_directory& d) -> future<> {
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co_await d.prepare(flags);
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});
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co_await dir.invoke_on_all([&dir, flags] (sstables::sstable_directory& d) -> future<> {
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// Supposed to be called with the node either down or on behalf of maintenance tasks
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// like nodetool refresh
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co_await d.process_sstable_dir(flags);
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co_await d.move_foreign_sstables(dir);
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});
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co_await dir.invoke_on_all(&sstables::sstable_directory::commit_directory_changes);
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}
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future<>
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distributed_loader::lock_table(sharded<sstables::sstable_directory>& dir, sharded<replica::database>& db, sstring ks_name, sstring cf_name) {
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return dir.invoke_on_all([&db, ks_name, cf_name] (sstables::sstable_directory& d) {
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auto& table = db.local().find_column_family(ks_name, cf_name);
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d.store_phaser(table.write_in_progress());
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return make_ready_future<>();
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});
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}
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// Global resharding function. Done in two parts:
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// - The first part spreads the foreign_sstable_open_info across shards so that all of them are
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// resharding about the same amount of data
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// - The second part calls each shard's distributed object to reshard the SSTables they were
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// assigned.
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future<>
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distributed_loader::reshard(sharded<sstables::sstable_directory>& dir, sharded<replica::database>& db, sstring ks_name, sstring table_name, sstables::compaction_sstable_creator_fn creator, compaction::owned_ranges_ptr owned_ranges_ptr) {
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auto& compaction_module = db.local().get_compaction_manager().get_task_manager_module();
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auto task = co_await compaction_module.make_and_start_task<table_resharding_compaction_task_impl>({}, std::move(ks_name), std::move(table_name), dir, db, std::move(creator), std::move(owned_ranges_ptr));
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co_await task->done();
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}
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future<sstables::sstable::version_types>
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highest_version_seen(sharded<sstables::sstable_directory>& dir, sstables::sstable_version_types system_version) {
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using version = sstables::sstable_version_types;
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return dir.map_reduce0(std::mem_fn(&sstables::sstable_directory::highest_version_seen), system_version, [] (version a, version b) {
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return std::max(a, b);
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});
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}
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future<>
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distributed_loader::reshape(sharded<sstables::sstable_directory>& dir, sharded<replica::database>& db, sstables::reshape_mode mode,
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sstring ks_name, sstring table_name, sstables::compaction_sstable_creator_fn creator,
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std::function<bool (const sstables::shared_sstable&)> filter) {
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auto& compaction_module = db.local().get_compaction_manager().get_task_manager_module();
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auto task = co_await compaction_module.make_and_start_task<table_reshaping_compaction_task_impl>({}, std::move(ks_name), std::move(table_name), dir, db, mode, std::move(creator), std::move(filter));
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co_await task->done();
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}
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// Loads SSTables into the main directory (or staging) and returns how many were loaded
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future<size_t>
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distributed_loader::make_sstables_available(sstables::sstable_directory& dir, sharded<replica::database>& db,
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sharded<db::view::view_builder>& vb, bool needs_view_update, sstring ks, sstring cf) {
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auto& table = db.local().find_column_family(ks, cf);
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auto new_sstables = std::vector<sstables::shared_sstable>();
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co_await dir.do_for_each_sstable([&table, needs_view_update, &new_sstables] (sstables::shared_sstable sst) -> future<> {
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auto gen = table.calculate_generation_for_new_table();
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dblog.trace("Loading {} into {}, new generation {}", sst->get_filename(), needs_view_update ? "staging" : "base", gen);
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co_await sst->pick_up_from_upload(!needs_view_update ? sstables::sstable_state::normal : sstables::sstable_state::staging, gen);
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// When loading an imported sst, set level to 0 because it may overlap with existing ssts on higher levels.
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sst->set_sstable_level(0);
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new_sstables.push_back(std::move(sst));
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});
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// nothing loaded
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if (new_sstables.empty()) {
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co_return 0;
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}
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co_await table.add_sstables_and_update_cache(new_sstables).handle_exception([&table] (std::exception_ptr ep) {
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dblog.error("Failed to load SSTables for {}.{}: {}. Aborting.", table.schema()->ks_name(), table.schema()->cf_name(), ep);
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abort();
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});
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co_await coroutine::parallel_for_each(new_sstables, [&vb, &table] (sstables::shared_sstable sst) -> future<> {
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if (sst->requires_view_building()) {
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co_await vb.local().register_staging_sstable(sst, table.shared_from_this());
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}
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});
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co_return new_sstables.size();
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}
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future<>
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distributed_loader::process_upload_dir(distributed<replica::database>& db, sharded<db::view::view_builder>& vb, sstring ks, sstring cf) {
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const auto& rs = db.local().find_keyspace(ks).get_replication_strategy();
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if (rs.is_per_table()) {
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on_internal_error(dblog, "process_upload_dir is not supported with tablets");
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}
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return seastar::async([&db, &vb, ks = std::move(ks), cf = std::move(cf)] {
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auto global_table = get_table_on_all_shards(db, ks, cf).get();
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sharded<sstables::sstable_directory> directory;
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directory.start(global_table.as_sharded_parameter(),
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sstables::sstable_state::upload, &error_handler_gen_for_upload_dir
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).get();
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auto stop_directory = deferred_stop(directory);
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lock_table(directory, db, ks, cf).get();
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sstables::sstable_directory::process_flags flags {
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.need_mutate_level = true,
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.enable_dangerous_direct_import_of_cassandra_counters = db.local().get_config().enable_dangerous_direct_import_of_cassandra_counters(),
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.allow_loading_materialized_view = false,
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};
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process_sstable_dir(directory, flags).get();
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sharded<sstables::sstable_generation_generator> sharded_gen;
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auto highest_generation = highest_generation_seen(directory).get();
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sharded_gen.start(highest_generation ? highest_generation.as_int() : 0).get();
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auto stop_generator = deferred_stop(sharded_gen);
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auto make_sstable = [&] (shard_id shard) {
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auto& sstm = global_table->get_sstables_manager();
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bool uuid_sstable_identifiers = sstm.uuid_sstable_identifiers();
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auto generation = sharded_gen.invoke_on(shard, [uuid_sstable_identifiers] (auto& gen) {
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return gen(sstables::uuid_identifiers{uuid_sstable_identifiers});
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}).get();
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return sstm.make_sstable(global_table->schema(), global_table->dir(), global_table->get_storage_options(),
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generation, sstables::sstable_state::upload, sstm.get_highest_supported_format(),
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sstables::sstable_format_types::big, gc_clock::now(), &error_handler_gen_for_upload_dir);
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};
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// Pass owned_ranges_ptr to reshard to piggy-back cleanup on the resharding compaction.
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// Note that needs_cleanup() is inaccurate and may return false positives,
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// maybe triggering resharding+cleanup unnecessarily for some sstables.
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// But this is resharding on refresh (sstable loading via upload dir),
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// which will usually require resharding anyway.
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//
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// FIXME: take multiple compaction groups into account
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// - segregate resharded tables into compaction groups
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// - split the keyspace local ranges per compaction_group as done in table::perform_cleanup_compaction
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// so that cleanup can be considered per compaction group
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auto owned_ranges_ptr = compaction::make_owned_ranges_ptr(db.local().get_keyspace_local_ranges(ks));
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reshard(directory, db, ks, cf, make_sstable, owned_ranges_ptr).get();
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reshape(directory, db, sstables::reshape_mode::strict, ks, cf, make_sstable,
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[] (const sstables::shared_sstable&) { return true; }).get();
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// Move to staging directory to avoid clashes with future uploads. Unique generation number ensures no collisions.
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const bool use_view_update_path = db::view::check_needs_view_update_path(vb.local(), db.local().get_token_metadata(), *global_table, streaming::stream_reason::repair).get();
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size_t loaded = directory.map_reduce0([&db, ks, cf, use_view_update_path, &vb] (sstables::sstable_directory& dir) {
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return make_sstables_available(dir, db, vb, use_view_update_path, ks, cf);
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}, size_t(0), std::plus<size_t>()).get();
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dblog.info("Loaded {} SSTables", loaded);
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});
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}
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future<std::tuple<table_id, std::vector<std::vector<sstables::shared_sstable>>>>
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distributed_loader::get_sstables_from_upload_dir(distributed<replica::database>& db, sstring ks, sstring cf, sstables::sstable_open_config cfg) {
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return seastar::async([&db, ks = std::move(ks), cf = std::move(cf), cfg] {
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auto global_table = get_table_on_all_shards(db, ks, cf).get();
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sharded<sstables::sstable_directory> directory;
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auto table_id = global_table->schema()->id();
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directory.start(global_table.as_sharded_parameter(),
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sstables::sstable_state::upload, &error_handler_gen_for_upload_dir
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).get();
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auto stop = deferred_stop(directory);
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std::vector<std::vector<sstables::shared_sstable>> sstables_on_shards(smp::count);
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lock_table(directory, db, ks, cf).get();
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sstables::sstable_directory::process_flags flags {
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.need_mutate_level = true,
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.enable_dangerous_direct_import_of_cassandra_counters = db.local().get_config().enable_dangerous_direct_import_of_cassandra_counters(),
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.allow_loading_materialized_view = false,
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.sort_sstables_according_to_owner = false,
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.sstable_open_config = cfg,
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};
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process_sstable_dir(directory, flags).get();
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directory.invoke_on_all([&sstables_on_shards] (sstables::sstable_directory& d) mutable {
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sstables_on_shards[this_shard_id()] = d.get_unsorted_sstables();
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}).get();
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return std::make_tuple(table_id, std::move(sstables_on_shards));
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});
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}
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class table_populator {
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distributed<replica::database>& _db;
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sstring _ks;
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sstring _cf;
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global_table_ptr& _global_table;
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std::unordered_map<sstables::sstable_state, lw_shared_ptr<sharded<sstables::sstable_directory>>> _sstable_directories;
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sstables::sstable_version_types _highest_version = sstables::oldest_writable_sstable_format;
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sstables::generation_type _highest_generation;
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public:
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table_populator(global_table_ptr& ptr, distributed<replica::database>& db, sstring ks, sstring cf)
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: _db(db)
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, _ks(std::move(ks))
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, _cf(std::move(cf))
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, _global_table(ptr)
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{
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}
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~table_populator() {
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// All directories must have been stopped
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// using table_populator::stop()
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assert(_sstable_directories.empty());
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}
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future<> start() {
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assert(this_shard_id() == 0);
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for (auto state : { sstables::sstable_state::normal, sstables::sstable_state::staging, sstables::sstable_state::quarantine }) {
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co_await start_subdir(state);
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}
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co_await smp::invoke_on_all([this] {
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_global_table->update_sstables_known_generation(_highest_generation);
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return _global_table->disable_auto_compaction();
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});
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co_await populate_subdir(sstables::sstable_state::staging, allow_offstrategy_compaction::no);
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co_await populate_subdir(sstables::sstable_state::quarantine, allow_offstrategy_compaction::no);
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co_await populate_subdir(sstables::sstable_state::normal, allow_offstrategy_compaction::yes);
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}
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future<> stop() {
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for (auto it = _sstable_directories.begin(); it != _sstable_directories.end(); it = _sstable_directories.erase(it)) {
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co_await it->second->stop();
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}
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}
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private:
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using allow_offstrategy_compaction = bool_class<struct allow_offstrategy_compaction_tag>;
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future<> populate_subdir(sstables::sstable_state state, allow_offstrategy_compaction);
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future<> start_subdir(sstables::sstable_state state);
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};
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future<> table_populator::start_subdir(sstables::sstable_state state) {
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auto dptr = make_lw_shared<sharded<sstables::sstable_directory>>();
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auto& directory = *dptr;
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co_await directory.start(_global_table.as_sharded_parameter(), state, default_io_error_handler_gen());
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// directory must be stopped using table_populator::stop below
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_sstable_directories[state] = dptr;
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co_await distributed_loader::lock_table(directory, _db, _ks, _cf);
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sstables::sstable_directory::process_flags flags {
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.throw_on_missing_toc = true,
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.enable_dangerous_direct_import_of_cassandra_counters = _db.local().get_config().enable_dangerous_direct_import_of_cassandra_counters(),
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.allow_loading_materialized_view = true,
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.garbage_collect = true,
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};
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co_await distributed_loader::process_sstable_dir(directory, flags);
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// If we are resharding system tables before we can read them, we will not
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// know which is the highest format we support: this information is itself stored
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// in the system tables. In that case we'll rely on what we find on disk: we'll
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// at least not downgrade any files. If we already know that we support a higher
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// format than the one we see then we use that.
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auto sys_format = _global_table->get_sstables_manager().get_highest_supported_format();
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auto sst_version = co_await highest_version_seen(directory, sys_format);
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auto generation = co_await highest_generation_seen(directory);
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_highest_version = std::max(sst_version, _highest_version);
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_highest_generation = std::max(generation, _highest_generation);
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}
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sstables::shared_sstable make_sstable(replica::table& table, sstables::sstable_state state, sstables::generation_type generation, sstables::sstable_version_types v) {
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return table.get_sstables_manager().make_sstable(table.schema(), table.dir(), table.get_storage_options(), generation, state, v, sstables::sstable_format_types::big);
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}
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future<> table_populator::populate_subdir(sstables::sstable_state state, allow_offstrategy_compaction do_allow_offstrategy_compaction) {
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dblog.debug("Populating {}/{}/{} state={} allow_offstrategy_compaction={}", _ks, _cf, _global_table->dir(), state, do_allow_offstrategy_compaction);
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if (!_sstable_directories.contains(state)) {
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co_return;
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}
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auto& directory = *_sstable_directories.at(state);
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co_await distributed_loader::reshard(directory, _db, _ks, _cf, [this, state] (shard_id shard) mutable {
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auto gen = smp::submit_to(shard, [this] () {
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return _global_table->calculate_generation_for_new_table();
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}).get();
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return make_sstable(*_global_table, state, gen, _highest_version);
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});
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// The node is offline at this point so we are very lenient with what we consider
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// offstrategy.
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// SSTables created by repair may not conform to compaction strategy layout goal
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// because data segregation is only performed by compaction
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// Instead of reshaping them on boot, let's add them to maintenance set and allow
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// off-strategy compaction to reshape them. This will allow node to become online
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// ASAP. Given that SSTables with repair origin are disjoint, they can be efficiently
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// read from.
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auto eligible_for_reshape_on_boot = [] (const sstables::shared_sstable& sst) {
|
|
return sst->get_origin() != sstables::repair_origin;
|
|
};
|
|
|
|
co_await distributed_loader::reshape(directory, _db, sstables::reshape_mode::relaxed, _ks, _cf, [this, state](shard_id shard) {
|
|
auto gen = _global_table->calculate_generation_for_new_table();
|
|
return make_sstable(*_global_table, state, gen, _highest_version);
|
|
}, eligible_for_reshape_on_boot);
|
|
|
|
co_await directory.invoke_on_all([this, &eligible_for_reshape_on_boot, do_allow_offstrategy_compaction] (sstables::sstable_directory& dir) -> future<> {
|
|
co_await dir.do_for_each_sstable([this, &eligible_for_reshape_on_boot, do_allow_offstrategy_compaction] (sstables::shared_sstable sst) {
|
|
auto requires_offstrategy = sstables::offstrategy(do_allow_offstrategy_compaction && !eligible_for_reshape_on_boot(sst));
|
|
return _global_table->add_sstable_and_update_cache(sst, requires_offstrategy);
|
|
});
|
|
if (do_allow_offstrategy_compaction) {
|
|
_global_table->trigger_offstrategy_compaction();
|
|
}
|
|
});
|
|
}
|
|
|
|
future<> distributed_loader::populate_keyspace(distributed<replica::database>& db,
|
|
sharded<db::system_keyspace>& sys_ks, keyspace& ks, sstring ks_name)
|
|
{
|
|
dblog.info("Populating Keyspace {}", ks_name);
|
|
|
|
co_await coroutine::parallel_for_each(ks.metadata()->cf_meta_data() | boost::adaptors::map_values, [&] (schema_ptr s) -> future<> {
|
|
auto uuid = s->id();
|
|
sstring cfname = s->cf_name();
|
|
auto gtable = co_await get_table_on_all_shards(db, ks_name, cfname);
|
|
|
|
// might have more than one dir for a keyspace iff data_file_directories is > 1 and
|
|
// somehow someone placed sstables in more than one of them for a given ks. (import?)
|
|
co_await coroutine::parallel_for_each(gtable->get_config().all_datadirs, [&] (const sstring& datadir) -> future<> {
|
|
auto& cf = *gtable;
|
|
|
|
dblog.info("Keyspace {}: Reading CF {} id={} version={} storage={} datadir={}", ks_name, cfname, uuid, s->version(), cf.get_storage_options().type_string(), datadir);
|
|
|
|
auto metadata = table_populator(gtable, db, ks_name, cfname);
|
|
std::exception_ptr ex;
|
|
|
|
try {
|
|
co_await metadata.start();
|
|
} catch (...) {
|
|
std::exception_ptr eptr = std::current_exception();
|
|
std::string msg =
|
|
format("Exception while populating keyspace '{}' with column family '{}' from datadir '{}': {}",
|
|
ks_name, cfname, datadir, eptr);
|
|
dblog.error("Exception while populating keyspace '{}' with column family '{}' from datadir '{}': {}",
|
|
ks_name, cfname, datadir, eptr);
|
|
try {
|
|
std::rethrow_exception(eptr);
|
|
} catch (sstables::compaction_stopped_exception& e) {
|
|
// swallow compaction stopped exception, to allow clean shutdown.
|
|
} catch (...) {
|
|
ex = std::make_exception_ptr(std::runtime_error(msg.c_str()));
|
|
}
|
|
}
|
|
|
|
co_await metadata.stop();
|
|
if (ex) {
|
|
co_await coroutine::return_exception_ptr(std::move(ex));
|
|
}
|
|
});
|
|
|
|
// system tables are made writable through sys_ks::mark_writable
|
|
if (!is_system_keyspace(ks_name)) {
|
|
co_await smp::invoke_on_all([&] {
|
|
auto s = gtable->schema();
|
|
db.local().find_column_family(s).mark_ready_for_writes(db.local().commitlog_for(s));
|
|
});
|
|
}
|
|
});
|
|
|
|
// here we can be sure that the 'truncated' table is loaded,
|
|
// now we load and initialize the truncation times for the tables
|
|
{
|
|
const auto truncation_times = co_await sys_ks.local().load_truncation_times();
|
|
co_await smp::invoke_on_all([&] {
|
|
db.local().get_tables_metadata().for_each_table([&](table_id id, lw_shared_ptr<table> table) {
|
|
if (table->schema()->ks_name() != ks_name) {
|
|
return;
|
|
}
|
|
const auto it = truncation_times.find(id);
|
|
const auto truncation_time = it == truncation_times.end()
|
|
? db_clock::time_point::min()
|
|
: it->second;
|
|
if (this_shard_id() == 0 && table->schema()->ks_name() == db::schema_tables::NAME &&
|
|
truncation_time != db_clock::time_point::min()) {
|
|
// replay_position stored in the truncation record may belong to
|
|
// the old (default) commitlog domain. It's not safe to interpret
|
|
// that replay position in the schema commitlog domain.
|
|
// Refuse to boot in this case. We assume no one truncated schema tables.
|
|
// We will hit this during rolling upgrade, in which case the user will
|
|
// roll back and let us know.
|
|
throw std::runtime_error(format("Schema table {}.{} has a truncation record. Booting is not safe.",
|
|
table->schema()->ks_name(), table->schema()->cf_name()));
|
|
}
|
|
table->set_truncation_time(truncation_time);
|
|
});
|
|
});
|
|
}
|
|
}
|
|
|
|
future<> distributed_loader::init_system_keyspace(sharded<db::system_keyspace>& sys_ks, distributed<locator::effective_replication_map_factory>& erm_factory, distributed<replica::database>& db) {
|
|
population_started = true;
|
|
|
|
return seastar::async([&sys_ks, &erm_factory, &db] {
|
|
sys_ks.invoke_on_all([&erm_factory, &db] (auto& sys_ks) {
|
|
return sys_ks.make(erm_factory.local(), db.local());
|
|
}).get();
|
|
|
|
for (auto ksname : system_keyspaces) {
|
|
auto& ks = db.local().get_keyspaces();
|
|
auto i = ks.find(ksname);
|
|
if (i != ks.end()) {
|
|
distributed_loader::populate_keyspace(db, sys_ks, i->second, sstring(ksname)).get();
|
|
}
|
|
}
|
|
});
|
|
}
|
|
|
|
future<> distributed_loader::init_non_system_keyspaces(distributed<replica::database>& db,
|
|
distributed<service::storage_proxy>& proxy, sharded<db::system_keyspace>& sys_ks) {
|
|
return seastar::async([&db, &proxy, &sys_ks] {
|
|
db.invoke_on_all([&proxy, &sys_ks] (replica::database& db) {
|
|
return db.parse_system_tables(proxy, sys_ks);
|
|
}).get();
|
|
|
|
const auto& cfg = db.local().get_config();
|
|
|
|
for (bool prio_only : { true, false}) {
|
|
std::vector<future<>> futures;
|
|
|
|
for (auto& ks : db.local().get_keyspaces()) {
|
|
auto& ks_name = ks.first;
|
|
|
|
if (is_system_keyspace(ks_name)) {
|
|
continue;
|
|
}
|
|
|
|
/**
|
|
* Must process in two phases: Prio and non-prio.
|
|
* This looks like it is not needed. And it is not
|
|
* in open-source version. But essential for enterprise.
|
|
* Do _not_ remove or refactor away.
|
|
*/
|
|
if (prio_only != cfg.extensions().is_extension_internal_keyspace(ks_name)) {
|
|
continue;
|
|
}
|
|
|
|
futures.emplace_back(distributed_loader::populate_keyspace(db, sys_ks, ks.second, ks_name));
|
|
}
|
|
|
|
when_all_succeed(futures.begin(), futures.end()).discard_result().get();
|
|
}
|
|
});
|
|
}
|
|
|
|
}
|