Files
scylladb/replica/distributed_loader.hh
Botond Dénes 1891ad2551 Merge 'distributed_loader: detect highest generation before populating column families' from Benny Halevy
We should scan all sstables in the table directory and its
subdirectories to determine the highest sstable version and generation
before using it for creating new sstables (via reshard or reshape).

Otherwise, the generations of new sstables created when populating staging (via reshard or reshape) may collide with generations in the base directory, leading to https://github.com/scylladb/scylladb/issues/11789

Refs scylladb/scylladb#11789
Fixes scylladb/scylladb#11793

Closes #11795

* github.com:scylladb/scylladb:
  distributed_loader: populate_column_family: reindent
  distributed_loader: coroutinize populate_column_family
  distributed_loader: table_population_metadata: start: reindent
  distributed_loader: table_population_metadata: coroutinize start_subdir
  distributed_loader: table_population_metadata: start_subdir: reindent
  distributed_loader: pre-load all sstables metadata for table before populating it

(cherry picked from commit 4aa0b16852)
2023-04-21 08:12:44 +03:00

98 lines
3.7 KiB
C++

/*
* Copyright (C) 2018-present ScyllaDB
*/
/*
* SPDX-License-Identifier: AGPL-3.0-or-later
*/
#pragma once
#include <seastar/core/future.hh>
#include <seastar/core/distributed.hh>
#include <seastar/core/sstring.hh>
#include <seastar/core/file.hh>
#include <seastar/util/bool_class.hh>
#include <vector>
#include <functional>
#include <filesystem>
#include "seastarx.hh"
#include "compaction/compaction_descriptor.hh"
#include "db/system_keyspace.hh"
namespace replica {
class database;
class table;
using column_family = table;
}
namespace db {
class config;
class system_distributed_keyspace;
class system_keyspace;
namespace view {
class view_update_generator;
}
}
namespace sstables {
class entry_descriptor;
class foreign_sstable_open_info;
class sstable_directory;
}
namespace service {
class storage_proxy;
class storage_service;
}
namespace gms {
class gossiper;
}
class distributed_loader_for_tests;
namespace replica {
class table_population_metadata;
class distributed_loader {
friend class ::distributed_loader_for_tests;
friend class table_population_metadata;
static future<> reshape(sharded<sstables::sstable_directory>& dir, sharded<replica::database>& db, sstables::reshape_mode mode,
sstring ks_name, sstring table_name, sstables::compaction_sstable_creator_fn creator, std::function<bool (const sstables::shared_sstable&)> filter);
static future<> reshard(sharded<sstables::sstable_directory>& dir, sharded<replica::database>& db, sstring ks_name, sstring table_name, sstables::compaction_sstable_creator_fn creator);
static future<> process_sstable_dir(sharded<sstables::sstable_directory>& dir, bool sort_sstables_according_to_owner = true);
static future<> lock_table(sharded<sstables::sstable_directory>& dir, sharded<replica::database>& db, sstring ks_name, sstring cf_name);
static future<size_t> make_sstables_available(sstables::sstable_directory& dir,
sharded<replica::database>& db, sharded<db::view::view_update_generator>& view_update_generator,
std::filesystem::path datadir, sstring ks, sstring cf);
using allow_offstrategy_compaction = bool_class<struct allow_offstrategy_compaction_tag>;
using must_exist = bool_class<struct must_exist_tag>;
static future<> populate_column_family(table_population_metadata& metadata, sstring subdir, allow_offstrategy_compaction, must_exist = must_exist::yes);
static future<> populate_keyspace(distributed<replica::database>& db, sstring datadir, sstring ks_name);
static future<> cleanup_column_family_temp_sst_dirs(sstring sstdir);
static future<> handle_sstables_pending_delete(sstring pending_deletes_dir);
public:
static future<> init_system_keyspace(distributed<replica::database>& db, distributed<service::storage_service>& ss, sharded<gms::gossiper>& g, db::config& cfg, db::table_selector&);
static future<> init_non_system_keyspaces(distributed<replica::database>& db, distributed<service::storage_proxy>& proxy, sharded<db::system_keyspace>& sys_ks);
// Scan sstables under upload directory. Return a vector with smp::count entries.
// Each entry with index of idx should be accessed on shard idx only.
// Each entry contains a vector of sstables for this shard.
// The table UUID is returned too.
static future<std::tuple<utils::UUID, std::vector<std::vector<sstables::shared_sstable>>>>
get_sstables_from_upload_dir(distributed<replica::database>& db, sstring ks, sstring cf);
static future<> process_upload_dir(distributed<replica::database>& db, distributed<db::system_distributed_keyspace>& sys_dist_ks,
distributed<db::view::view_update_generator>& view_update_generator, sstring ks_name, sstring cf_name);
};
}