120bc4715b
Summary: Just like ReadOptions::background_purge_on_iterator_cleanup but for ColumnFamilyHandle instead of Iterator. In our use case we sometimes call ColumnFamilyHandle's destructor from low-latency threads, and sometimes it blocks the thread for a few seconds deleting the files. To avoid that, we can either offload ColumnFamilyHandle's destruction to a background thread on our side, or add this option on rocksdb side. This PR does the latter, to be consistent with how we solve exactly the same problem for iterators using background_purge_on_iterator_cleanup option. (EDIT: It's avoid_unnecessary_blocking_io now, and affects both CF drops and iterator destructors.) I'm not quite comfortable with having two separate options (background_purge_on_iterator_cleanup and background_purge_on_cf_cleanup) for such a rarely used thing. Maybe we should merge them? Rename background_purge_on_cf_cleanup to something like delete_files_on_background_threads_only or avoid_blocking_io_in_unexpected_places, and make iterators use it instead of the one in ReadOptions? I can do that here if you guys think it's better. Pull Request resolved: https://github.com/facebook/rocksdb/pull/5043 Differential Revision: D14339233 Pulled By: al13n321 fbshipit-source-id: ccf7efa11c85c9a5b91d969bb55627d0fb01e7b8
110 lines
3.2 KiB
C++
110 lines
3.2 KiB
C++
// Copyright (c) 2011-present, Facebook, Inc. All rights reserved.
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// This source code is licensed under both the GPLv2 (found in the
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// COPYING file in the root directory) and Apache 2.0 License
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// (found in the LICENSE.Apache file in the root directory).
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#pragma once
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#include <string>
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#include <vector>
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#include "rocksdb/options.h"
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namespace rocksdb {
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struct ImmutableDBOptions {
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ImmutableDBOptions();
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explicit ImmutableDBOptions(const DBOptions& options);
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void Dump(Logger* log) const;
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bool create_if_missing;
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bool create_missing_column_families;
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bool error_if_exists;
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bool paranoid_checks;
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Env* env;
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std::shared_ptr<RateLimiter> rate_limiter;
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std::shared_ptr<SstFileManager> sst_file_manager;
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std::shared_ptr<Logger> info_log;
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InfoLogLevel info_log_level;
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int max_file_opening_threads;
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std::shared_ptr<Statistics> statistics;
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bool use_fsync;
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std::vector<DbPath> db_paths;
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std::string db_log_dir;
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std::string wal_dir;
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uint32_t max_subcompactions;
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int max_background_flushes;
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size_t max_log_file_size;
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size_t log_file_time_to_roll;
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size_t keep_log_file_num;
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size_t recycle_log_file_num;
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uint64_t max_manifest_file_size;
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int table_cache_numshardbits;
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uint64_t wal_ttl_seconds;
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uint64_t wal_size_limit_mb;
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size_t manifest_preallocation_size;
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bool allow_mmap_reads;
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bool allow_mmap_writes;
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bool use_direct_reads;
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bool use_direct_io_for_flush_and_compaction;
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bool allow_fallocate;
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bool is_fd_close_on_exec;
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bool advise_random_on_open;
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size_t db_write_buffer_size;
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std::shared_ptr<WriteBufferManager> write_buffer_manager;
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DBOptions::AccessHint access_hint_on_compaction_start;
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bool new_table_reader_for_compaction_inputs;
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size_t random_access_max_buffer_size;
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bool use_adaptive_mutex;
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std::vector<std::shared_ptr<EventListener>> listeners;
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bool enable_thread_tracking;
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bool enable_pipelined_write;
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bool allow_concurrent_memtable_write;
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bool enable_write_thread_adaptive_yield;
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uint64_t write_thread_max_yield_usec;
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uint64_t write_thread_slow_yield_usec;
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bool skip_stats_update_on_db_open;
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WALRecoveryMode wal_recovery_mode;
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bool allow_2pc;
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std::shared_ptr<Cache> row_cache;
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#ifndef ROCKSDB_LITE
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WalFilter* wal_filter;
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#endif // ROCKSDB_LITE
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bool fail_if_options_file_error;
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bool dump_malloc_stats;
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bool avoid_flush_during_recovery;
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bool allow_ingest_behind;
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bool preserve_deletes;
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bool two_write_queues;
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bool manual_wal_flush;
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bool atomic_flush;
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bool avoid_unnecessary_blocking_io;
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};
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struct MutableDBOptions {
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MutableDBOptions();
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explicit MutableDBOptions(const MutableDBOptions& options) = default;
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explicit MutableDBOptions(const DBOptions& options);
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void Dump(Logger* log) const;
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int max_background_jobs;
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int base_background_compactions;
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int max_background_compactions;
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bool avoid_flush_during_shutdown;
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size_t writable_file_max_buffer_size;
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uint64_t delayed_write_rate;
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uint64_t max_total_wal_size;
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uint64_t delete_obsolete_files_period_micros;
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unsigned int stats_dump_period_sec;
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unsigned int stats_persist_period_sec;
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size_t stats_history_buffer_size;
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int max_open_files;
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uint64_t bytes_per_sync;
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uint64_t wal_bytes_per_sync;
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size_t compaction_readahead_size;
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};
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} // namespace rocksdb
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