fe6df3d270
Load-and-stream reads the entire content from SSTables, therefore it can afford to discard the bloom filter that might otherwise consume a significant amount of memory. Bloom filters are only needed by compaction and other replica::table operations that might want to check the presence of keys in the SSTable files, like single-partition reads. It's not uncommon to see Data:Filter ratio of less than 100:1, meaning that for ~300G of data, filters will take ~3G. In addition to saving memory footprint, it also reduces operation time as load-and-stream no longer have to read, parse and build the filters from disk into memory. Signed-off-by: Raphael S. Carvalho <raphaelsc@scylladb.com>
108 lines
4.0 KiB
C++
108 lines
4.0 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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#pragma once
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#include <seastar/core/future.hh>
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#include <seastar/core/distributed.hh>
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#include <seastar/core/sstring.hh>
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#include <seastar/core/file.hh>
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#include <seastar/util/bool_class.hh>
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#include <vector>
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#include <functional>
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#include <filesystem>
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#include "seastarx.hh"
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#include "compaction/compaction_descriptor.hh"
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#include "db/system_keyspace.hh"
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#include "sstables/sstable_directory.hh"
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namespace replica {
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class database;
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class table;
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using column_family = table;
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}
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namespace db {
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class config;
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class system_distributed_keyspace;
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class system_keyspace;
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namespace view {
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class view_update_generator;
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}
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}
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namespace sstables {
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class entry_descriptor;
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class foreign_sstable_open_info;
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}
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namespace service {
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class storage_proxy;
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class storage_service;
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class raft_group_registry;
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}
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namespace gms {
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class gossiper;
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}
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class distributed_loader_for_tests;
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namespace replica {
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class table_populator;
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class distributed_loader {
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friend class ::distributed_loader_for_tests;
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friend class table_populator;
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static future<> 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, std::function<bool (const sstables::shared_sstable&)> filter, io_priority_class iop);
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static future<> reshard(sharded<sstables::sstable_directory>& dir, sharded<replica::database>& db, sstring ks_name, sstring table_name, sstables::compaction_sstable_creator_fn creator,
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io_priority_class iop, compaction::owned_ranges_ptr owned_ranges_ptr = nullptr);
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static future<> process_sstable_dir(sharded<sstables::sstable_directory>& dir, sstables::sstable_directory::process_flags flags);
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static future<> lock_table(sharded<sstables::sstable_directory>& dir, sharded<replica::database>& db, sstring ks_name, sstring cf_name);
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static future<size_t> make_sstables_available(sstables::sstable_directory& dir,
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sharded<replica::database>& db, sharded<db::view::view_update_generator>& view_update_generator,
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bool needs_view_update, sstring ks, sstring cf);
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static future<> populate_keyspace(distributed<replica::database>& db, sstring datadir, sstring ks_name);
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static future<> cleanup_column_family_temp_sst_dirs(sstring sstdir);
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static future<> handle_sstables_pending_delete(sstring pending_deletes_dir);
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public:
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static future<> init_system_keyspace(sharded<db::system_keyspace>& sys_ks, distributed<replica::database>& db, distributed<service::storage_service>& ss, sharded<gms::gossiper>& g, sharded<service::raft_group_registry>& raft_gr, db::config& cfg, system_table_load_phase phase);
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static future<> init_non_system_keyspaces(distributed<replica::database>& db, distributed<service::storage_proxy>& proxy, sharded<db::system_keyspace>& sys_ks);
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/**
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* Marks a keyspace (by name) as "prioritized" on bootstrap.
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* This will effectively let it bypass concurrency control.
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* The only real use for this is to avoid certain chicken and
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* egg issues.
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*
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* May only be called pre-bootstrap on main shard.
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* Required for enterprise. Do _not_ remove.
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*/
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static void mark_keyspace_as_load_prio(const sstring&);
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// Scan sstables under upload directory. Return a vector with smp::count entries.
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// Each entry with index of idx should be accessed on shard idx only.
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// Each entry contains a vector of sstables for this shard.
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// The table UUID is returned too.
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static future<std::tuple<table_id, std::vector<std::vector<sstables::shared_sstable>>>>
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get_sstables_from_upload_dir(distributed<replica::database>& db, sstring ks, sstring cf, sstables::sstable_open_config cfg);
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static future<> process_upload_dir(distributed<replica::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_name, sstring cf_name);
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};
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}
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