4439e5c132
Get rid of unused includes of seastar/util/{defer,closeable}.hh
and add a few that are missing from source files.
Signed-off-by: Benny Halevy <bhalevy@scylladb.com>
741 lines
37 KiB
C++
741 lines
37 KiB
C++
/*
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* Copyright (C) 2018-present ScyllaDB
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*/
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/*
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* This file is part of Scylla.
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*
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* Scylla is free software: you can redistribute it and/or modify
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* it under the terms of the GNU Affero General Public License as published by
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* the Free Software Foundation, either version 3 of the License, or
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* (at your option) any later version.
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*
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* Scylla is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with Scylla. If not, see <http://www.gnu.org/licenses/>.
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*/
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#include <seastar/util/closeable.hh>
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#include "distributed_loader.hh"
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#include "database.hh"
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#include "db/config.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 "lister.hh"
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#include "compaction/compaction.hh"
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#include "compaction/compaction_manager.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 "service/priority_manager.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 <boost/range/algorithm/min_element.hpp>
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#include "db/view/view_update_generator.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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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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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::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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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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// global_column_family_ptr provides a way to easily retrieve local instance of a given column family.
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class global_column_family_ptr {
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distributed<database>& _db;
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utils::UUID _id;
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private:
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column_family& get() const { return _db.local().find_column_family(_id); }
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public:
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global_column_family_ptr(distributed<database>& db, sstring ks_name, sstring cf_name)
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: _db(db)
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, _id(_db.local().find_column_family(ks_name, cf_name).schema()->id()) {
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}
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column_family* operator->() const {
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return &get();
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}
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column_family& operator*() const {
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return get();
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}
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};
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template <typename... Args>
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static inline
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future<> verification_error(fs::path path, const char* fstr, Args&&... args) {
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auto emsg = fmt::format(fstr, std::forward<Args>(args)...);
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dblog.error("{}: {}", path.string(), emsg);
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return make_exception_future<>(std::runtime_error(emsg));
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}
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// Verify that all files and directories are owned by current uid
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// and that files can be read and directories can be read, written, and looked up (execute)
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// No other file types may exist.
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future<> distributed_loader::verify_owner_and_mode(fs::path path) {
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return file_stat(path.string(), follow_symlink::no).then([path = std::move(path)] (stat_data sd) {
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// Under docker, we run with euid 0 and there is no reasonable way to enforce that the
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// in-container uid will have the same uid as files mounted from outside the container. So
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// just allow euid 0 as a special case. It should survive the file_accessible() checks below.
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// See #4823.
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if (geteuid() != 0 && sd.uid != geteuid()) {
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return verification_error(std::move(path), "File not owned by current euid: {}. Owner is: {}", geteuid(), sd.uid);
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}
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switch (sd.type) {
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case directory_entry_type::regular: {
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auto f = file_accessible(path.string(), access_flags::read);
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return f.then([path = std::move(path)] (bool can_access) {
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if (!can_access) {
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return verification_error(std::move(path), "File cannot be accessed for read");
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}
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return make_ready_future<>();
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});
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break;
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}
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case directory_entry_type::directory: {
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auto f = file_accessible(path.string(), access_flags::read | access_flags::write | access_flags::execute);
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return f.then([path = std::move(path)] (bool can_access) {
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if (!can_access) {
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return verification_error(std::move(path), "Directory cannot be accessed for read, write, and execute");
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}
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return lister::scan_dir(path, {}, [] (fs::path dir, directory_entry de) {
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return verify_owner_and_mode(dir / de.name);
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});
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});
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break;
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}
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default:
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return verification_error(std::move(path), "Must be either a regular file or a directory (type={})", static_cast<int>(sd.type));
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}
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});
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};
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future<>
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distributed_loader::process_sstable_dir(sharded<sstables::sstable_directory>& dir, bool sort_sstables_according_to_owner) {
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return dir.invoke_on(0, [] (const sstables::sstable_directory& d) {
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return distributed_loader::verify_owner_and_mode(d.sstable_dir());
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}).then([&dir, sort_sstables_according_to_owner] {
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return dir.invoke_on_all([&dir, sort_sstables_according_to_owner] (sstables::sstable_directory& d) {
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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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return d.process_sstable_dir(service::get_local_streaming_priority(), sort_sstables_according_to_owner).then([&dir, &d] {
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return d.move_foreign_sstables(dir);
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});
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});
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}).then([&dir] {
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return dir.invoke_on_all([&dir] (sstables::sstable_directory& d) {
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return d.commit_directory_changes();
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});
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});
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}
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future<>
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distributed_loader::lock_table(sharded<sstables::sstable_directory>& dir, sharded<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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// Helper structure for resharding.
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//
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// Describes the sstables (represented by their foreign_sstable_open_info) that are shared and
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// need to be resharded. Each shard will keep one such descriptor, that contains the list of
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// SSTables assigned to it, and their total size. The total size is used to make sure we are
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// fairly balancing SSTables among shards.
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struct reshard_shard_descriptor {
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sstables::sstable_directory::sstable_info_vector info_vec;
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uint64_t uncompressed_data_size = 0;
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bool total_size_smaller(const reshard_shard_descriptor& rhs) const {
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return uncompressed_data_size < rhs.uncompressed_data_size;
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}
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uint64_t size() const {
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return uncompressed_data_size;
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}
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};
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// Collects shared SSTables from all shards and returns a vector containing them all.
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// This function assumes that the list of SSTables can be fairly big so it is careful to
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// manipulate it in a do_for_each loop (which yields) instead of using standard accumulators.
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future<sstables::sstable_directory::sstable_info_vector>
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collect_all_shared_sstables(sharded<sstables::sstable_directory>& dir) {
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return do_with(sstables::sstable_directory::sstable_info_vector(), [&dir] (sstables::sstable_directory::sstable_info_vector& info_vec) {
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// We want to make sure that each distributed object reshards about the same amount of data.
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// Each sharded object has its own shared SSTables. We can use a clever algorithm in which they
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// all distributely figure out which SSTables to exchange, but we'll keep it simple and move all
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// their foreign_sstable_open_info to a coordinator (the shard who called this function). We can
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// move in bulk and that's efficient. That shard can then distribute the work among all the
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// others who will reshard.
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auto coordinator = this_shard_id();
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// We will first move all of the foreign open info to temporary storage so that we can sort
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// them. We want to distribute bigger sstables first.
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return dir.invoke_on_all([&info_vec, coordinator] (sstables::sstable_directory& d) {
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return smp::submit_to(coordinator, [&info_vec, info = d.retrieve_shared_sstables()] () mutable {
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// We want do_for_each here instead of a loop to avoid stalls. Resharding can be
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// called during node operations too. For example, if it is called to load new
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// SSTables into the system.
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return do_for_each(info, [&info_vec] (sstables::foreign_sstable_open_info& info) {
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info_vec.push_back(std::move(info));
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});
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});
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}).then([&info_vec] () mutable {
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return make_ready_future<sstables::sstable_directory::sstable_info_vector>(std::move(info_vec));
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});
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});
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}
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// Given a vector of shared sstables to be resharded, distribute it among all shards.
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// The vector is first sorted to make sure that we are moving the biggest SSTables first.
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//
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// Returns a reshard_shard_descriptor per shard indicating the work that each shard has to do.
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future<std::vector<reshard_shard_descriptor>>
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distribute_reshard_jobs(sstables::sstable_directory::sstable_info_vector source) {
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return do_with(std::move(source), std::vector<reshard_shard_descriptor>(smp::count),
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[] (sstables::sstable_directory::sstable_info_vector& source, std::vector<reshard_shard_descriptor>& destinations) mutable {
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std::sort(source.begin(), source.end(), [] (const sstables::foreign_sstable_open_info& a, const sstables::foreign_sstable_open_info& b) {
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// Sort on descending SSTable sizes.
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return a.uncompressed_data_size > b.uncompressed_data_size;
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});
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return do_for_each(source, [&destinations] (sstables::foreign_sstable_open_info& info) mutable {
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auto shard_it = boost::min_element(destinations, std::mem_fn(&reshard_shard_descriptor::total_size_smaller));
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shard_it->uncompressed_data_size += info.uncompressed_data_size;
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shard_it->info_vec.push_back(std::move(info));
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}).then([&destinations] () mutable {
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return make_ready_future<std::vector<reshard_shard_descriptor>>(std::move(destinations));
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});
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});
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}
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future<> run_resharding_jobs(sharded<sstables::sstable_directory>& dir, std::vector<reshard_shard_descriptor> reshard_jobs,
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sharded<database>& db, sstring ks_name, sstring table_name, sstables::compaction_sstable_creator_fn creator) {
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uint64_t total_size = boost::accumulate(reshard_jobs | boost::adaptors::transformed(std::mem_fn(&reshard_shard_descriptor::size)), uint64_t(0));
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if (total_size == 0) {
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return make_ready_future<>();
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}
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return do_with(std::move(reshard_jobs), [&dir, &db, ks_name, table_name, creator = std::move(creator), total_size] (std::vector<reshard_shard_descriptor>& reshard_jobs) {
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auto start = std::chrono::steady_clock::now();
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dblog.info("{}", fmt::format("Resharding {} for {}.{}", sstables::pretty_printed_data_size(total_size), ks_name, table_name));
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return dir.invoke_on_all([&dir, &db, &reshard_jobs, ks_name, table_name, creator] (sstables::sstable_directory& d) mutable {
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auto& table = db.local().find_column_family(ks_name, table_name);
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auto info_vec = std::move(reshard_jobs[this_shard_id()].info_vec);
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auto& cm = table.get_compaction_manager();
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auto max_threshold = table.schema()->max_compaction_threshold();
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auto& iop = service::get_local_streaming_priority();
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return d.reshard(std::move(info_vec), cm, table, max_threshold, creator, iop).then([&d, &dir] {
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return d.move_foreign_sstables(dir);
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});
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}).then([start, total_size, ks_name, table_name] {
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auto duration = std::chrono::duration_cast<std::chrono::duration<float>>(std::chrono::steady_clock::now() - start);
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dblog.info("{}", fmt::format("Resharded {} for {}.{} in {:.2f} seconds, {}", sstables::pretty_printed_data_size(total_size), ks_name, table_name, duration.count(), sstables::pretty_printed_throughput(total_size, duration)));
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return make_ready_future<>();
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});
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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<database>& db, sstring ks_name, sstring table_name, sstables::compaction_sstable_creator_fn creator) {
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return collect_all_shared_sstables(dir).then([] (sstables::sstable_directory::sstable_info_vector all_jobs) mutable {
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return distribute_reshard_jobs(std::move(all_jobs));
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}).then([&dir, &db, ks_name, table_name, creator = std::move(creator)] (std::vector<reshard_shard_descriptor> destinations) mutable {
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return run_resharding_jobs(dir, std::move(destinations), db, ks_name, table_name, std::move(creator));
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});
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}
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future<int64_t>
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highest_generation_seen(sharded<sstables::sstable_directory>& directory) {
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return directory.map_reduce0(std::mem_fn(&sstables::sstable_directory::highest_generation_seen), int64_t(0), [] (int64_t a, int64_t b) {
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return std::max(a, b);
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});
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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<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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auto start = std::chrono::steady_clock::now();
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return dir.map_reduce0([&dir, &db, ks_name = std::move(ks_name), table_name = std::move(table_name), creator = std::move(creator), mode] (sstables::sstable_directory& d) {
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auto& table = db.local().find_column_family(ks_name, table_name);
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auto& cm = table.get_compaction_manager();
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auto& iop = service::get_local_streaming_priority();
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return d.reshape(cm, table, creator, iop, mode);
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}, uint64_t(0), std::plus<uint64_t>()).then([start] (uint64_t total_size) {
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if (total_size > 0) {
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auto duration = std::chrono::duration_cast<std::chrono::duration<float>>(std::chrono::steady_clock::now() - start);
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dblog.info("{}", fmt::format("Reshaped {} in {:.2f} seconds, {}", sstables::pretty_printed_data_size(total_size), duration.count(), sstables::pretty_printed_throughput(total_size, duration)));
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}
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return make_ready_future<>();
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});
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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<database>& db,
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sharded<db::view::view_update_generator>& view_update_generator, fs::path datadir, sstring ks, sstring cf) {
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auto& table = db.local().find_column_family(ks, cf);
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return do_with(std::vector<sstables::shared_sstable>(),
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[&table, &dir, &view_update_generator, datadir = std::move(datadir)] (std::vector<sstables::shared_sstable>& new_sstables) {
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return dir.do_for_each_sstable([&table, datadir = std::move(datadir), &new_sstables] (sstables::shared_sstable sst) {
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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(), datadir.native(), gen);
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return sst->move_to_new_dir(datadir.native(), gen, true).then([&table, &new_sstables, sst] {
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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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return make_ready_future<>();
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});
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}).then([&table, &new_sstables] {
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// nothing loaded
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if (new_sstables.empty()) {
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return make_ready_future<>();
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}
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return do_for_each(new_sstables, [&table] (sstables::shared_sstable& sst) {
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return table.add_sstable_and_update_cache(sst).handle_exception([&sst] (std::exception_ptr ep) {
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dblog.error("Failed to load {}: {}. Aborting.", sst->toc_filename(), ep);
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abort();
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});
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});
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}).then([&view_update_generator, &table, &new_sstables] {
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return parallel_for_each(new_sstables, [&view_update_generator, &table] (sstables::shared_sstable& sst) {
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if (sst->requires_view_building()) {
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return view_update_generator.local().register_staging_sstable(sst, table.shared_from_this());
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}
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return make_ready_future<>();
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});
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}).then_wrapped([&new_sstables] (future<> f) {
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if (!f.failed()) {
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return make_ready_future<size_t>(new_sstables.size());
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} else {
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return make_exception_future<size_t>(f.get_exception());
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}
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});
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});
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}
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future<>
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distributed_loader::process_upload_dir(distributed<database>& db, distributed<db::system_distributed_keyspace>& sys_dist_ks,
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distributed<db::view::view_update_generator>& view_update_generator, sstring ks, sstring cf) {
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seastar::thread_attributes attr;
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attr.sched_group = db.local().get_streaming_scheduling_group();
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return seastar::async(std::move(attr), [&db, &view_update_generator, &sys_dist_ks, ks = std::move(ks), cf = std::move(cf)] {
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global_column_family_ptr global_table(db, ks, cf);
|
|
|
|
sharded<sstables::sstable_directory> directory;
|
|
auto upload = fs::path(global_table->dir()) / "upload";
|
|
directory.start(upload, db.local().get_config().initial_sstable_loading_concurrency(), std::ref(db.local().get_sharded_sst_dir_semaphore()),
|
|
sstables::sstable_directory::need_mutate_level::yes,
|
|
sstables::sstable_directory::lack_of_toc_fatal::no,
|
|
sstables::sstable_directory::enable_dangerous_direct_import_of_cassandra_counters(db.local().get_config().enable_dangerous_direct_import_of_cassandra_counters()),
|
|
sstables::sstable_directory::allow_loading_materialized_view::no,
|
|
[&global_table] (fs::path dir, int64_t gen, sstables::sstable_version_types v, sstables::sstable_format_types f) {
|
|
return global_table->make_sstable(dir.native(), gen, v, f, &error_handler_gen_for_upload_dir);
|
|
|
|
}).get();
|
|
|
|
auto stop = deferred_stop(directory);
|
|
|
|
lock_table(directory, db, ks, cf).get();
|
|
process_sstable_dir(directory).get();
|
|
|
|
auto generation = highest_generation_seen(directory).get0();
|
|
auto shard_generation_base = generation / smp::count + 1;
|
|
|
|
// We still want to do our best to keep the generation numbers shard-friendly.
|
|
// Each destination shard will manage its own generation counter.
|
|
std::vector<std::atomic<int64_t>> shard_gen(smp::count);
|
|
for (shard_id s = 0; s < smp::count; ++s) {
|
|
shard_gen[s].store(shard_generation_base * smp::count + s, std::memory_order_relaxed);
|
|
}
|
|
|
|
reshard(directory, db, ks, cf, [&global_table, upload, &shard_gen] (shard_id shard) mutable {
|
|
// we need generation calculated by instance of cf at requested shard
|
|
auto gen = shard_gen[shard].fetch_add(smp::count, std::memory_order_relaxed);
|
|
|
|
return global_table->make_sstable(upload.native(), gen,
|
|
global_table->get_sstables_manager().get_highest_supported_format(),
|
|
sstables::sstable::format_types::big, &error_handler_gen_for_upload_dir);
|
|
}).get();
|
|
|
|
reshape(directory, db, sstables::reshape_mode::strict, ks, cf, [global_table, upload, &shard_gen] (shard_id shard) {
|
|
auto gen = shard_gen[shard].fetch_add(smp::count, std::memory_order_relaxed);
|
|
return global_table->make_sstable(upload.native(), gen,
|
|
global_table->get_sstables_manager().get_highest_supported_format(),
|
|
sstables::sstable::format_types::big,
|
|
&error_handler_gen_for_upload_dir);
|
|
}).get();
|
|
|
|
const bool use_view_update_path = db::view::check_needs_view_update_path(sys_dist_ks.local(), *global_table, streaming::stream_reason::repair).get0();
|
|
|
|
auto datadir = upload.parent_path();
|
|
if (use_view_update_path) {
|
|
// Move to staging directory to avoid clashes with future uploads. Unique generation number ensures no collisions.
|
|
datadir /= "staging";
|
|
}
|
|
|
|
size_t loaded = directory.map_reduce0([&db, ks, cf, datadir, &view_update_generator] (sstables::sstable_directory& dir) {
|
|
return make_sstables_available(dir, db, view_update_generator, datadir, ks, cf);
|
|
}, size_t(0), std::plus<size_t>()).get0();
|
|
|
|
dblog.info("Loaded {} SSTables into {}", loaded, datadir.native());
|
|
});
|
|
}
|
|
|
|
future<std::tuple<utils::UUID, std::vector<std::vector<sstables::shared_sstable>>>>
|
|
distributed_loader::get_sstables_from_upload_dir(distributed<database>& db, sstring ks, sstring cf) {
|
|
return seastar::async([&db, ks = std::move(ks), cf = std::move(cf)] {
|
|
global_column_family_ptr global_table(db, ks, cf);
|
|
sharded<sstables::sstable_directory> directory;
|
|
auto table_id = global_table->schema()->id();
|
|
auto upload = fs::path(global_table->dir()) / "upload";
|
|
|
|
directory.start(upload, db.local().get_config().initial_sstable_loading_concurrency(), std::ref(db.local().get_sharded_sst_dir_semaphore()),
|
|
sstables::sstable_directory::need_mutate_level::yes,
|
|
sstables::sstable_directory::lack_of_toc_fatal::no,
|
|
sstables::sstable_directory::enable_dangerous_direct_import_of_cassandra_counters(db.local().get_config().enable_dangerous_direct_import_of_cassandra_counters()),
|
|
sstables::sstable_directory::allow_loading_materialized_view::no,
|
|
[&global_table] (fs::path dir, int64_t gen, sstables::sstable_version_types v, sstables::sstable_format_types f) {
|
|
return global_table->make_sstable(dir.native(), gen, v, f, &error_handler_gen_for_upload_dir);
|
|
|
|
}).get();
|
|
|
|
auto stop = deferred_stop(directory);
|
|
|
|
std::vector<std::vector<sstables::shared_sstable>> sstables_on_shards(smp::count);
|
|
lock_table(directory, db, ks, cf).get();
|
|
bool sort_sstables_according_to_owner = false;
|
|
process_sstable_dir(directory, sort_sstables_according_to_owner).get();
|
|
directory.invoke_on_all([&sstables_on_shards] (sstables::sstable_directory& d) mutable {
|
|
sstables_on_shards[this_shard_id()] = d.get_unsorted_sstables();
|
|
}).get();
|
|
|
|
return std::make_tuple(table_id, sstables_on_shards);
|
|
});
|
|
}
|
|
|
|
future<> distributed_loader::cleanup_column_family_temp_sst_dirs(sstring sstdir) {
|
|
return do_with(std::vector<future<>>(), [sstdir = std::move(sstdir)] (std::vector<future<>>& futures) {
|
|
return lister::scan_dir(sstdir, { directory_entry_type::directory }, [&futures] (fs::path sstdir, directory_entry de) {
|
|
// push futures that remove files/directories into an array of futures,
|
|
// so that the supplied callback will not block scan_dir() from
|
|
// reading the next entry in the directory.
|
|
fs::path dirpath = sstdir / de.name;
|
|
if (sstables::sstable::is_temp_dir(dirpath)) {
|
|
dblog.info("Found temporary sstable directory: {}, removing", dirpath);
|
|
futures.push_back(io_check([dirpath = std::move(dirpath)] () { return lister::rmdir(dirpath); }));
|
|
}
|
|
return make_ready_future<>();
|
|
}).then([&futures] {
|
|
return when_all_succeed(futures.begin(), futures.end()).discard_result();
|
|
});
|
|
});
|
|
}
|
|
|
|
future<> distributed_loader::handle_sstables_pending_delete(sstring pending_delete_dir) {
|
|
return do_with(std::vector<future<>>(), [dir = std::move(pending_delete_dir)] (std::vector<future<>>& futures) {
|
|
return lister::scan_dir(dir, { directory_entry_type::regular }, [&futures] (fs::path dir, directory_entry de) {
|
|
// push nested futures that remove files/directories into an array of futures,
|
|
// so that the supplied callback will not block scan_dir() from
|
|
// reading the next entry in the directory.
|
|
fs::path file_path = dir / de.name;
|
|
if (file_path.extension() == ".tmp") {
|
|
dblog.info("Found temporary pending_delete log file: {}, deleting", file_path);
|
|
futures.push_back(remove_file(file_path.string()));
|
|
} else if (file_path.extension() == ".log") {
|
|
dblog.info("Found pending_delete log file: {}, replaying", file_path);
|
|
auto f = sstables::replay_pending_delete_log(file_path.string()).then([file_path = std::move(file_path)] {
|
|
dblog.debug("Replayed {}, removing", file_path);
|
|
return remove_file(file_path.string());
|
|
});
|
|
futures.push_back(std::move(f));
|
|
} else {
|
|
dblog.debug("Found unknown file in pending_delete directory: {}, ignoring", file_path);
|
|
}
|
|
return make_ready_future<>();
|
|
}).then([&futures] {
|
|
return when_all_succeed(futures.begin(), futures.end()).discard_result();
|
|
});
|
|
});
|
|
}
|
|
|
|
future<> distributed_loader::populate_column_family(distributed<database>& db, sstring sstdir, sstring ks, sstring cf) {
|
|
return async([&db, sstdir = std::move(sstdir), ks = std::move(ks), cf = std::move(cf)] {
|
|
assert(this_shard_id() == 0);
|
|
// First pass, cleanup temporary sstable directories and sstables pending delete.
|
|
cleanup_column_family_temp_sst_dirs(sstdir).get();
|
|
auto pending_delete_dir = sstdir + "/" + sstables::sstable::pending_delete_dir_basename();
|
|
auto exists = file_exists(pending_delete_dir).get0();
|
|
if (exists) {
|
|
handle_sstables_pending_delete(pending_delete_dir).get();
|
|
}
|
|
|
|
global_column_family_ptr global_table(db, ks, cf);
|
|
|
|
sharded<sstables::sstable_directory> directory;
|
|
directory.start(fs::path(sstdir), db.local().get_config().initial_sstable_loading_concurrency(), std::ref(db.local().get_sharded_sst_dir_semaphore()),
|
|
sstables::sstable_directory::need_mutate_level::no,
|
|
sstables::sstable_directory::lack_of_toc_fatal::yes,
|
|
sstables::sstable_directory::enable_dangerous_direct_import_of_cassandra_counters(db.local().get_config().enable_dangerous_direct_import_of_cassandra_counters()),
|
|
sstables::sstable_directory::allow_loading_materialized_view::yes,
|
|
[&global_table] (fs::path dir, int64_t gen, sstables::sstable_version_types v, sstables::sstable_format_types f) {
|
|
return global_table->make_sstable(dir.native(), gen, v, f);
|
|
}).get();
|
|
|
|
auto stop = deferred_stop(directory);
|
|
|
|
lock_table(directory, db, ks, cf).get();
|
|
process_sstable_dir(directory).get();
|
|
|
|
// If we are resharding system tables before we can read them, we will not
|
|
// know which is the highest format we support: this information is itself stored
|
|
// in the system tables. In that case we'll rely on what we find on disk: we'll
|
|
// at least not downgrade any files. If we already know that we support a higher
|
|
// format than the one we see then we use that.
|
|
auto sys_format = global_table->get_sstables_manager().get_highest_supported_format();
|
|
auto sst_version = highest_version_seen(directory, sys_format).get0();
|
|
auto generation = highest_generation_seen(directory).get0();
|
|
|
|
db.invoke_on_all([&global_table, generation] (database& db) {
|
|
global_table->update_sstables_known_generation(generation);
|
|
global_table->disable_auto_compaction();
|
|
return make_ready_future<>();
|
|
}).get();
|
|
|
|
reshard(directory, db, ks, cf, [&global_table, sstdir, sst_version] (shard_id shard) mutable {
|
|
auto gen = smp::submit_to(shard, [&global_table] () {
|
|
return global_table->calculate_generation_for_new_table();
|
|
}).get0();
|
|
|
|
return global_table->make_sstable(sstdir, gen, sst_version, sstables::sstable::format_types::big);
|
|
}).get();
|
|
|
|
// The node is offline at this point so we are very lenient with what we consider
|
|
// offstrategy.
|
|
reshape(directory, db, sstables::reshape_mode::relaxed, ks, cf, [global_table, sstdir, sst_version] (shard_id shard) {
|
|
auto gen = global_table->calculate_generation_for_new_table();
|
|
return global_table->make_sstable(sstdir, gen, sst_version, sstables::sstable::format_types::big);
|
|
}).get();
|
|
|
|
directory.invoke_on_all([global_table] (sstables::sstable_directory& dir) {
|
|
return dir.do_for_each_sstable([&global_table] (sstables::shared_sstable sst) {
|
|
return global_table->add_sstable_and_update_cache(sst);
|
|
});
|
|
}).get();
|
|
});
|
|
}
|
|
|
|
future<> distributed_loader::populate_keyspace(distributed<database>& db, sstring datadir, sstring ks_name) {
|
|
auto ksdir = datadir + "/" + ks_name;
|
|
auto& keyspaces = db.local().get_keyspaces();
|
|
auto i = keyspaces.find(ks_name);
|
|
if (i == keyspaces.end()) {
|
|
dblog.warn("Skipping undefined keyspace: {}", ks_name);
|
|
return make_ready_future<>();
|
|
} else {
|
|
dblog.info("Populating Keyspace {}", ks_name);
|
|
auto& ks = i->second;
|
|
auto& column_families = db.local().get_column_families();
|
|
|
|
return parallel_for_each(ks.metadata()->cf_meta_data() | boost::adaptors::map_values,
|
|
[ks_name, ksdir, &ks, &column_families, &db] (schema_ptr s) {
|
|
utils::UUID uuid = s->id();
|
|
lw_shared_ptr<column_family> cf = column_families[uuid];
|
|
sstring cfname = cf->schema()->cf_name();
|
|
auto sstdir = ks.column_family_directory(ksdir, cfname, uuid);
|
|
dblog.info("Keyspace {}: Reading CF {} id={} version={}", ks_name, cfname, uuid, s->version());
|
|
return ks.make_directory_for_column_family(cfname, uuid).then([&db, sstdir, uuid, ks_name, cfname] {
|
|
return distributed_loader::populate_column_family(db, sstdir + "/staging", ks_name, cfname);
|
|
}).then([&db, sstdir, uuid, ks_name, cfname] {
|
|
return distributed_loader::populate_column_family(db, sstdir, ks_name, cfname);
|
|
}).handle_exception([ks_name, cfname, sstdir](std::exception_ptr eptr) {
|
|
std::string msg =
|
|
format("Exception while populating keyspace '{}' with column family '{}' from file '{}': {}",
|
|
ks_name, cfname, sstdir, eptr);
|
|
dblog.error("Exception while populating keyspace '{}' with column family '{}' from file '{}': {}",
|
|
ks_name, cfname, sstdir, eptr);
|
|
throw std::runtime_error(msg.c_str());
|
|
});
|
|
});
|
|
}
|
|
}
|
|
|
|
future<> distributed_loader::init_system_keyspace(distributed<database>& db, distributed<service::storage_service>& ss) {
|
|
return seastar::async([&db, &ss] {
|
|
// We need to init commitlog on shard0 before it is inited on other shards
|
|
// because it obtains the list of pre-existing segments for replay, which must
|
|
// not include reserve segments created by active commitlogs.
|
|
db.invoke_on(0, [] (database& db) {
|
|
return db.init_commitlog();
|
|
}).get();
|
|
db.invoke_on_all([] (database& db) {
|
|
if (this_shard_id() == 0) {
|
|
return make_ready_future<>();
|
|
}
|
|
return db.init_commitlog();
|
|
}).get();
|
|
|
|
db.invoke_on_all([&ss] (database& db) {
|
|
return db::system_keyspace::make(db, ss.local());
|
|
}).get();
|
|
|
|
const auto& cfg = db.local().get_config();
|
|
for (auto& data_dir : cfg.data_file_directories()) {
|
|
for (auto ksname : system_keyspaces) {
|
|
distributed_loader::populate_keyspace(db, data_dir, sstring(ksname)).get();
|
|
}
|
|
}
|
|
|
|
db.invoke_on_all([] (database& db) {
|
|
for (auto ksname : system_keyspaces) {
|
|
auto& ks = db.find_keyspace(ksname);
|
|
for (auto& pair : ks.metadata()->cf_meta_data()) {
|
|
auto cfm = pair.second;
|
|
auto& cf = db.find_column_family(cfm);
|
|
cf.mark_ready_for_writes();
|
|
}
|
|
// for system keyspaces, we only do this post all population, and
|
|
// only as a consistency measure.
|
|
// change this if it is ever needed to sync system keyspace
|
|
// population
|
|
ks.mark_as_populated();
|
|
}
|
|
return make_ready_future<>();
|
|
}).get();
|
|
});
|
|
}
|
|
|
|
future<> distributed_loader::ensure_system_table_directories(distributed<database>& db) {
|
|
return parallel_for_each(system_keyspaces, [&db](std::string_view ksname) {
|
|
auto& ks = db.local().find_keyspace(ksname);
|
|
return parallel_for_each(ks.metadata()->cf_meta_data(), [&ks] (auto& pair) {
|
|
auto cfm = pair.second;
|
|
return ks.make_directory_for_column_family(cfm->cf_name(), cfm->id());
|
|
});
|
|
});
|
|
}
|
|
|
|
future<> distributed_loader::init_non_system_keyspaces(distributed<database>& db,
|
|
distributed<service::storage_proxy>& proxy, distributed<service::migration_manager>& mm) {
|
|
return seastar::async([&db, &proxy, &mm] {
|
|
db.invoke_on_all([&proxy, &mm] (database& db) {
|
|
return db.parse_system_tables(proxy, mm);
|
|
}).get();
|
|
|
|
const auto& cfg = db.local().get_config();
|
|
using ks_dirs = std::unordered_multimap<sstring, sstring>;
|
|
|
|
ks_dirs dirs;
|
|
|
|
parallel_for_each(cfg.data_file_directories(), [&db, &dirs] (sstring directory) {
|
|
// we want to collect the directories first, so we can get a full set of potential dirs
|
|
return lister::scan_dir(directory, { directory_entry_type::directory }, [&dirs] (fs::path datadir, directory_entry de) {
|
|
if (!is_system_keyspace(de.name)) {
|
|
dirs.emplace(de.name, datadir.native());
|
|
}
|
|
return make_ready_future<>();
|
|
});
|
|
}).get();
|
|
|
|
db.invoke_on_all([&dirs] (database& db) {
|
|
for (auto& [name, ks] : db.get_keyspaces()) {
|
|
// mark all user keyspaces that are _not_ on disk as already
|
|
// populated.
|
|
if (!dirs.contains(ks.metadata()->name())) {
|
|
ks.mark_as_populated();
|
|
}
|
|
}
|
|
}).get();
|
|
|
|
std::vector<future<>> futures;
|
|
|
|
// treat "dirs" as immutable to avoid modifying it while still in
|
|
// a range-iteration. Also to simplify the "finally"
|
|
for (auto i = dirs.begin(); i != dirs.end();) {
|
|
auto& ks_name = i->first;
|
|
auto e = dirs.equal_range(ks_name).second;
|
|
auto j = i++;
|
|
// 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?)
|
|
futures.emplace_back(parallel_for_each(j, e, [&](const std::pair<sstring, sstring>& p) {
|
|
auto& datadir = p.second;
|
|
return distributed_loader::populate_keyspace(db, datadir, ks_name);
|
|
}).finally([&] {
|
|
return db.invoke_on_all([ks_name] (database& db) {
|
|
// can be false if running test environment
|
|
// or ks_name was just a borked directory not representing
|
|
// a keyspace in schema tables.
|
|
if (db.has_keyspace(ks_name)) {
|
|
db.find_keyspace(ks_name).mark_as_populated();
|
|
}
|
|
return make_ready_future<>();
|
|
});
|
|
}));
|
|
}
|
|
|
|
when_all_succeed(futures.begin(), futures.end()).discard_result().get();
|
|
|
|
db.invoke_on_all([] (database& db) {
|
|
return parallel_for_each(db.get_non_system_column_families(), [] (lw_shared_ptr<table> table) {
|
|
// Make sure this is called even if the table is empty
|
|
table->mark_ready_for_writes();
|
|
return make_ready_future<>();
|
|
});
|
|
}).get();
|
|
});
|
|
}
|
|
|