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// Copyright (c) 2011-present, Facebook, Inc. All rights reserved.
// This source code is licensed under the BSD-style license found in the
// LICENSE file in the root directory of this source tree. An additional grant
// of patent rights can be found in the PATENTS file in the same directory.
//
// Copyright (c) 2011 The LevelDB Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file. See the AUTHORS file for names of contributors.
#include "rocksdb/options.h"
#ifndef __STDC_FORMAT_MACROS
#define __STDC_FORMAT_MACROS
#endif
#include <inttypes.h>
#include <limits>
#include "rocksdb/cache.h"
#include "rocksdb/compaction_filter.h"
#include "rocksdb/comparator.h"
#include "rocksdb/env.h"
#include "rocksdb/sst_file_manager.h"
#include "rocksdb/memtablerep.h"
#include "rocksdb/merge_operator.h"
#include "rocksdb/slice.h"
#include "rocksdb/slice_transform.h"
#include "rocksdb/table.h"
#include "rocksdb/table_properties.h"
#include "rocksdb/wal_filter.h"
#include "table/block_based_table_factory.h"
#include "util/compression.h"
#include "util/statistics.h"
#include "util/xfunc.h"
namespace rocksdb {
ColumnFamilyOptions::ColumnFamilyOptions()
: comparator(BytewiseComparator()),
merge_operator(nullptr),
compaction_filter(nullptr),
compaction_filter_factory(nullptr),
write_buffer_size(64 << 20),
max_write_buffer_number(2),
min_write_buffer_number_to_merge(1),
max_write_buffer_number_to_maintain(0),
compression(Snappy_Supported() ? kSnappyCompression : kNoCompression),
bottommost_compression(kDisableCompressionOption),
prefix_extractor(nullptr),
num_levels(7),
level0_file_num_compaction_trigger(4),
level0_slowdown_writes_trigger(20),
level0_stop_writes_trigger(24),
target_file_size_base(64 * 1048576),
target_file_size_multiplier(1),
max_bytes_for_level_base(256 * 1048576),
level_compaction_dynamic_level_bytes(false),
max_bytes_for_level_multiplier(10),
max_bytes_for_level_multiplier_additional(num_levels, 1),
max_compaction_bytes(0),
soft_rate_limit(0.0),
hard_rate_limit(0.0),
soft_pending_compaction_bytes_limit(64 * 1073741824ull),
hard_pending_compaction_bytes_limit(256 * 1073741824ull),
rate_limit_delay_max_milliseconds(1000),
arena_block_size(0),
disable_auto_compactions(false),
purge_redundant_kvs_while_flush(true),
compaction_style(kCompactionStyleLevel),
compaction_pri(kByCompensatedSize),
verify_checksums_in_compaction(true),
max_sequential_skip_in_iterations(8),
memtable_factory(std::shared_ptr<SkipListFactory>(new SkipListFactory)),
table_factory(
std::shared_ptr<TableFactory>(new BlockBasedTableFactory())),
inplace_update_support(false),
inplace_update_num_locks(10000),
inplace_callback(nullptr),
memtable_prefix_bloom_size_ratio(0.0),
memtable_huge_page_size(0),
bloom_locality(0),
max_successive_merges(0),
min_partial_merge_operands(2),
optimize_filters_for_hits(false),
paranoid_file_checks(false),
force_consistency_checks(false),
report_bg_io_stats(false) {
assert(memtable_factory.get() != nullptr);
}
ColumnFamilyOptions::ColumnFamilyOptions(const Options& options)
: comparator(options.comparator),
merge_operator(options.merge_operator),
compaction_filter(options.compaction_filter),
compaction_filter_factory(options.compaction_filter_factory),
write_buffer_size(options.write_buffer_size),
max_write_buffer_number(options.max_write_buffer_number),
min_write_buffer_number_to_merge(
options.min_write_buffer_number_to_merge),
max_write_buffer_number_to_maintain(
options.max_write_buffer_number_to_maintain),
compression(options.compression),
compression_per_level(options.compression_per_level),
bottommost_compression(options.bottommost_compression),
compression_opts(options.compression_opts),
prefix_extractor(options.prefix_extractor),
num_levels(options.num_levels),
level0_file_num_compaction_trigger(
options.level0_file_num_compaction_trigger),
level0_slowdown_writes_trigger(options.level0_slowdown_writes_trigger),
level0_stop_writes_trigger(options.level0_stop_writes_trigger),
target_file_size_base(options.target_file_size_base),
target_file_size_multiplier(options.target_file_size_multiplier),
max_bytes_for_level_base(options.max_bytes_for_level_base),
level_compaction_dynamic_level_bytes(
options.level_compaction_dynamic_level_bytes),
max_bytes_for_level_multiplier(options.max_bytes_for_level_multiplier),
max_bytes_for_level_multiplier_additional(
options.max_bytes_for_level_multiplier_additional),
max_compaction_bytes(options.max_compaction_bytes),
soft_rate_limit(options.soft_rate_limit),
soft_pending_compaction_bytes_limit(
options.soft_pending_compaction_bytes_limit),
hard_pending_compaction_bytes_limit(
options.hard_pending_compaction_bytes_limit),
rate_limit_delay_max_milliseconds(
options.rate_limit_delay_max_milliseconds),
arena_block_size(options.arena_block_size),
disable_auto_compactions(options.disable_auto_compactions),
purge_redundant_kvs_while_flush(options.purge_redundant_kvs_while_flush),
compaction_style(options.compaction_style),
compaction_pri(options.compaction_pri),
verify_checksums_in_compaction(options.verify_checksums_in_compaction),
compaction_options_universal(options.compaction_options_universal),
compaction_options_fifo(options.compaction_options_fifo),
max_sequential_skip_in_iterations(
options.max_sequential_skip_in_iterations),
memtable_factory(options.memtable_factory),
table_factory(options.table_factory),
table_properties_collector_factories(
options.table_properties_collector_factories),
inplace_update_support(options.inplace_update_support),
inplace_update_num_locks(options.inplace_update_num_locks),
inplace_callback(options.inplace_callback),
memtable_prefix_bloom_size_ratio(
options.memtable_prefix_bloom_size_ratio),
memtable_huge_page_size(options.memtable_huge_page_size),
bloom_locality(options.bloom_locality),
max_successive_merges(options.max_successive_merges),
min_partial_merge_operands(options.min_partial_merge_operands),
optimize_filters_for_hits(options.optimize_filters_for_hits),
paranoid_file_checks(options.paranoid_file_checks),
force_consistency_checks(options.force_consistency_checks),
report_bg_io_stats(options.report_bg_io_stats) {
assert(memtable_factory.get() != nullptr);
if (max_bytes_for_level_multiplier_additional.size() <
static_cast<unsigned int>(num_levels)) {
max_bytes_for_level_multiplier_additional.resize(num_levels, 1);
}
}
DBOptions::DBOptions()
: create_if_missing(false),
create_missing_column_families(false),
error_if_exists(false),
paranoid_checks(true),
env(Env::Default()),
rate_limiter(nullptr),
sst_file_manager(nullptr),
info_log(nullptr),
#ifdef NDEBUG
info_log_level(INFO_LEVEL),
#else
info_log_level(DEBUG_LEVEL),
#endif // NDEBUG
max_open_files(-1),
max_file_opening_threads(16),
max_total_wal_size(0),
statistics(nullptr),
disableDataSync(false),
use_fsync(false),
db_log_dir(""),
wal_dir(""),
delete_obsolete_files_period_micros(6ULL * 60 * 60 * 1000000),
base_background_compactions(1),
max_background_compactions(1),
max_subcompactions(1),
max_background_flushes(1),
max_log_file_size(0),
log_file_time_to_roll(0),
keep_log_file_num(1000),
recycle_log_file_num(0),
max_manifest_file_size(std::numeric_limits<uint64_t>::max()),
table_cache_numshardbits(6),
WAL_ttl_seconds(0),
WAL_size_limit_MB(0),
manifest_preallocation_size(4 * 1024 * 1024),
allow_os_buffer(true),
allow_mmap_reads(false),
allow_mmap_writes(false),
use_direct_reads(false),
allow_fallocate(true),
is_fd_close_on_exec(true),
skip_log_error_on_recovery(false),
stats_dump_period_sec(600),
advise_random_on_open(true),
db_write_buffer_size(0),
access_hint_on_compaction_start(NORMAL),
new_table_reader_for_compaction_inputs(false),
compaction_readahead_size(0),
random_access_max_buffer_size(1024 * 1024),
writable_file_max_buffer_size(1024 * 1024),
use_adaptive_mutex(false),
bytes_per_sync(0),
wal_bytes_per_sync(0),
listeners(),
enable_thread_tracking(false),
delayed_write_rate(2 * 1024U * 1024U),
allow_concurrent_memtable_write(false),
enable_write_thread_adaptive_yield(false),
write_thread_max_yield_usec(100),
write_thread_slow_yield_usec(3),
skip_stats_update_on_db_open(false),
wal_recovery_mode(WALRecoveryMode::kPointInTimeRecovery),
row_cache(nullptr),
#ifndef ROCKSDB_LITE
wal_filter(nullptr),
#endif // ROCKSDB_LITE
fail_if_options_file_error(false),
dump_malloc_stats(false),
avoid_flush_during_recovery(false),
avoid_flush_during_shutdown(false) {
}
DBOptions::DBOptions(const Options& options)
: create_if_missing(options.create_if_missing),
create_missing_column_families(options.create_missing_column_families),
error_if_exists(options.error_if_exists),
paranoid_checks(options.paranoid_checks),
env(options.env),
rate_limiter(options.rate_limiter),
sst_file_manager(options.sst_file_manager),
info_log(options.info_log),
info_log_level(options.info_log_level),
max_open_files(options.max_open_files),
max_file_opening_threads(options.max_file_opening_threads),
max_total_wal_size(options.max_total_wal_size),
statistics(options.statistics),
disableDataSync(options.disableDataSync),
use_fsync(options.use_fsync),
db_paths(options.db_paths),
db_log_dir(options.db_log_dir),
wal_dir(options.wal_dir),
delete_obsolete_files_period_micros(
options.delete_obsolete_files_period_micros),
base_background_compactions(options.base_background_compactions),
max_background_compactions(options.max_background_compactions),
max_subcompactions(options.max_subcompactions),
max_background_flushes(options.max_background_flushes),
max_log_file_size(options.max_log_file_size),
log_file_time_to_roll(options.log_file_time_to_roll),
keep_log_file_num(options.keep_log_file_num),
recycle_log_file_num(options.recycle_log_file_num),
max_manifest_file_size(options.max_manifest_file_size),
table_cache_numshardbits(options.table_cache_numshardbits),
WAL_ttl_seconds(options.WAL_ttl_seconds),
WAL_size_limit_MB(options.WAL_size_limit_MB),
manifest_preallocation_size(options.manifest_preallocation_size),
allow_os_buffer(options.allow_os_buffer),
allow_mmap_reads(options.allow_mmap_reads),
allow_mmap_writes(options.allow_mmap_writes),
use_direct_reads(options.use_direct_reads),
allow_fallocate(options.allow_fallocate),
is_fd_close_on_exec(options.is_fd_close_on_exec),
skip_log_error_on_recovery(options.skip_log_error_on_recovery),
stats_dump_period_sec(options.stats_dump_period_sec),
advise_random_on_open(options.advise_random_on_open),
db_write_buffer_size(options.db_write_buffer_size),
write_buffer_manager(options.write_buffer_manager),
access_hint_on_compaction_start(options.access_hint_on_compaction_start),
new_table_reader_for_compaction_inputs(
options.new_table_reader_for_compaction_inputs),
compaction_readahead_size(options.compaction_readahead_size),
random_access_max_buffer_size(options.random_access_max_buffer_size),
writable_file_max_buffer_size(options.writable_file_max_buffer_size),
use_adaptive_mutex(options.use_adaptive_mutex),
bytes_per_sync(options.bytes_per_sync),
wal_bytes_per_sync(options.wal_bytes_per_sync),
listeners(options.listeners),
enable_thread_tracking(options.enable_thread_tracking),
delayed_write_rate(options.delayed_write_rate),
allow_concurrent_memtable_write(options.allow_concurrent_memtable_write),
enable_write_thread_adaptive_yield(
options.enable_write_thread_adaptive_yield),
write_thread_max_yield_usec(options.write_thread_max_yield_usec),
write_thread_slow_yield_usec(options.write_thread_slow_yield_usec),
skip_stats_update_on_db_open(options.skip_stats_update_on_db_open),
wal_recovery_mode(options.wal_recovery_mode),
row_cache(options.row_cache),
#ifndef ROCKSDB_LITE
wal_filter(options.wal_filter),
#endif // ROCKSDB_LITE
fail_if_options_file_error(options.fail_if_options_file_error),
dump_malloc_stats(options.dump_malloc_stats),
avoid_flush_during_recovery(options.avoid_flush_during_recovery),
avoid_flush_during_shutdown(options.avoid_flush_during_shutdown) {
}
static const char* const access_hints[] = {
"NONE", "NORMAL", "SEQUENTIAL", "WILLNEED"
};
void DBOptions::Dump(Logger* log) const {
Header(log, " Options.error_if_exists: %d", error_if_exists);
Header(log, " Options.create_if_missing: %d", create_if_missing);
Header(log, " Options.paranoid_checks: %d", paranoid_checks);
Header(log, " Options.env: %p", env);
Header(log, " Options.info_log: %p", info_log.get());
Header(log, " Options.max_open_files: %d", max_open_files);
Header(log,
"Options.max_file_opening_threads: %d", max_file_opening_threads);
Header(log,
" Options.max_total_wal_size: %" PRIu64, max_total_wal_size);
Header(log, " Options.disableDataSync: %d", disableDataSync);
Header(log, " Options.use_fsync: %d", use_fsync);
Header(log, " Options.max_log_file_size: %" ROCKSDB_PRIszt,
max_log_file_size);
Header(log, "Options.max_manifest_file_size: %" PRIu64,
max_manifest_file_size);
Header(log, " Options.log_file_time_to_roll: %" ROCKSDB_PRIszt,
log_file_time_to_roll);
Header(log, " Options.keep_log_file_num: %" ROCKSDB_PRIszt,
keep_log_file_num);
Header(log, " Options.recycle_log_file_num: %" ROCKSDB_PRIszt,
recycle_log_file_num);
Header(log, " Options.allow_os_buffer: %d", allow_os_buffer);
Header(log, " Options.allow_mmap_reads: %d", allow_mmap_reads);
Header(log, " Options.allow_fallocate: %d", allow_fallocate);
Header(log, " Options.allow_mmap_writes: %d", allow_mmap_writes);
Header(log, " Options.use_direct_reads: %d", use_direct_reads);
Header(log, " Options.create_missing_column_families: %d",
create_missing_column_families);
Header(log, " Options.db_log_dir: %s",
db_log_dir.c_str());
Header(log, " Options.wal_dir: %s",
wal_dir.c_str());
Header(log, " Options.table_cache_numshardbits: %d",
table_cache_numshardbits);
Header(log, " Options.delete_obsolete_files_period_micros: %" PRIu64,
delete_obsolete_files_period_micros);
Header(log, " Options.base_background_compactions: %d",
base_background_compactions);
Header(log, " Options.max_background_compactions: %d",
max_background_compactions);
Header(log, " Options.max_subcompactions: %" PRIu32,
max_subcompactions);
Header(log, " Options.max_background_flushes: %d",
max_background_flushes);
Header(log, " Options.WAL_ttl_seconds: %" PRIu64,
WAL_ttl_seconds);
Header(log, " Options.WAL_size_limit_MB: %" PRIu64,
WAL_size_limit_MB);
Header(log,
" Options.manifest_preallocation_size: %" ROCKSDB_PRIszt,
manifest_preallocation_size);
Header(log, " Options.allow_os_buffer: %d",
allow_os_buffer);
Header(log, " Options.allow_mmap_reads: %d",
allow_mmap_reads);
Header(log, " Options.allow_mmap_writes: %d",
allow_mmap_writes);
Header(log, " Options.is_fd_close_on_exec: %d",
is_fd_close_on_exec);
Header(log, " Options.stats_dump_period_sec: %u",
stats_dump_period_sec);
Header(log, " Options.advise_random_on_open: %d",
advise_random_on_open);
Header(log,
" Options.db_write_buffer_size: %" ROCKSDB_PRIszt
"d",
db_write_buffer_size);
Header(log, " Options.access_hint_on_compaction_start: %s",
access_hints[access_hint_on_compaction_start]);
Header(log, " Options.new_table_reader_for_compaction_inputs: %d",
new_table_reader_for_compaction_inputs);
Header(log,
" Options.compaction_readahead_size: %" ROCKSDB_PRIszt
"d",
compaction_readahead_size);
Header(
log,
" Options.random_access_max_buffer_size: %" ROCKSDB_PRIszt
"d",
random_access_max_buffer_size);
Header(log,
" Options.writable_file_max_buffer_size: %" ROCKSDB_PRIszt
"d",
writable_file_max_buffer_size);
Header(log, " Options.use_adaptive_mutex: %d",
use_adaptive_mutex);
Header(log, " Options.rate_limiter: %p",
rate_limiter.get());
Header(
log, " Options.sst_file_manager.rate_bytes_per_sec: %" PRIi64,
sst_file_manager ? sst_file_manager->GetDeleteRateBytesPerSecond() : 0);
Header(log, " Options.bytes_per_sync: %" PRIu64,
bytes_per_sync);
Header(log, " Options.wal_bytes_per_sync: %" PRIu64,
wal_bytes_per_sync);
Header(log, " Options.wal_recovery_mode: %d",
wal_recovery_mode);
Header(log, " Options.enable_thread_tracking: %d",
enable_thread_tracking);
Header(log, " Options.allow_concurrent_memtable_write: %d",
allow_concurrent_memtable_write);
Header(log, " Options.enable_write_thread_adaptive_yield: %d",
enable_write_thread_adaptive_yield);
Header(log, " Options.write_thread_max_yield_usec: %" PRIu64,
write_thread_max_yield_usec);
Header(log, " Options.write_thread_slow_yield_usec: %" PRIu64,
write_thread_slow_yield_usec);
if (row_cache) {
Header(log, " Options.row_cache: %" PRIu64,
row_cache->GetCapacity());
} else {
Header(log, " Options.row_cache: None");
}
#ifndef ROCKSDB_LITE
Header(log, " Options.wal_filter: %s",
wal_filter ? wal_filter->Name() : "None");
#endif // ROCKDB_LITE
Header(log, " Options.avoid_flush_during_recovery: %d",
avoid_flush_during_recovery);
} // DBOptions::Dump
void ColumnFamilyOptions::Dump(Logger* log) const {
Header(log, " Options.comparator: %s", comparator->Name());
Header(log, " Options.merge_operator: %s",
merge_operator ? merge_operator->Name() : "None");
Header(log, " Options.compaction_filter: %s",
compaction_filter ? compaction_filter->Name() : "None");
Header(log, " Options.compaction_filter_factory: %s",
compaction_filter_factory ? compaction_filter_factory->Name() : "None");
Header(log, " Options.memtable_factory: %s", memtable_factory->Name());
Header(log, " Options.table_factory: %s", table_factory->Name());
Header(log, " table_factory options: %s",
table_factory->GetPrintableTableOptions().c_str());
Header(log, " Options.write_buffer_size: %" ROCKSDB_PRIszt,
write_buffer_size);
Header(log, " Options.max_write_buffer_number: %d", max_write_buffer_number);
if (!compression_per_level.empty()) {
for (unsigned int i = 0; i < compression_per_level.size(); i++) {
Header(log, " Options.compression[%d]: %s", i,
CompressionTypeToString(compression_per_level[i]).c_str());
}
} else {
Header(log, " Options.compression: %s",
CompressionTypeToString(compression).c_str());
}
Header(log, " Options.bottommost_compression: %s",
bottommost_compression == kDisableCompressionOption
? "Disabled"
: CompressionTypeToString(bottommost_compression).c_str());
Header(log, " Options.prefix_extractor: %s",
prefix_extractor == nullptr ? "nullptr" : prefix_extractor->Name());
Header(log, " Options.num_levels: %d", num_levels);
Header(log, " Options.min_write_buffer_number_to_merge: %d",
min_write_buffer_number_to_merge);
Header(log, " Options.max_write_buffer_number_to_maintain: %d",
max_write_buffer_number_to_maintain);
Header(log, " Options.compression_opts.window_bits: %d",
compression_opts.window_bits);
Header(log, " Options.compression_opts.level: %d",
compression_opts.level);
Header(log, " Options.compression_opts.strategy: %d",
compression_opts.strategy);
Header(log,
" Options.compression_opts.max_dict_bytes: %" ROCKSDB_PRIszt,
compression_opts.max_dict_bytes);
Header(log, " Options.level0_file_num_compaction_trigger: %d",
level0_file_num_compaction_trigger);
Header(log, " Options.level0_slowdown_writes_trigger: %d",
level0_slowdown_writes_trigger);
Header(log, " Options.level0_stop_writes_trigger: %d",
level0_stop_writes_trigger);
Header(log, " Options.target_file_size_base: %" PRIu64,
target_file_size_base);
Header(log, " Options.target_file_size_multiplier: %d",
target_file_size_multiplier);
Header(log, " Options.max_bytes_for_level_base: %" PRIu64,
max_bytes_for_level_base);
Header(log, "Options.level_compaction_dynamic_level_bytes: %d",
level_compaction_dynamic_level_bytes);
Header(log, " Options.max_bytes_for_level_multiplier: %f",
max_bytes_for_level_multiplier);
for (size_t i = 0; i < max_bytes_for_level_multiplier_additional.size();
i++) {
Header(log,
"Options.max_bytes_for_level_multiplier_addtl[%" ROCKSDB_PRIszt
"]: %d",
i, max_bytes_for_level_multiplier_additional[i]);
}
Header(log, " Options.max_sequential_skip_in_iterations: %" PRIu64,
max_sequential_skip_in_iterations);
Header(log, " Options.max_compaction_bytes: %" PRIu64,
max_compaction_bytes);
Header(log,
" Options.arena_block_size: %" ROCKSDB_PRIszt,
arena_block_size);
Header(log, " Options.soft_pending_compaction_bytes_limit: %" PRIu64,
soft_pending_compaction_bytes_limit);
Header(log, " Options.hard_pending_compaction_bytes_limit: %" PRIu64,
hard_pending_compaction_bytes_limit);
Header(log, " Options.rate_limit_delay_max_milliseconds: %u",
rate_limit_delay_max_milliseconds);
Header(log, " Options.disable_auto_compactions: %d",
disable_auto_compactions);
Header(log, " Options.verify_checksums_in_compaction: %d",
verify_checksums_in_compaction);
Header(log, " Options.compaction_style: %d",
compaction_style);
Header(log, " Options.compaction_pri: %d",
compaction_pri);
Header(log, " Options.compaction_options_universal.size_ratio: %u",
compaction_options_universal.size_ratio);
Header(log, "Options.compaction_options_universal.min_merge_width: %u",
compaction_options_universal.min_merge_width);
Header(log, "Options.compaction_options_universal.max_merge_width: %u",
compaction_options_universal.max_merge_width);
Header(log, "Options.compaction_options_universal."
"max_size_amplification_percent: %u",
compaction_options_universal.max_size_amplification_percent);
Header(log,
"Options.compaction_options_universal.compression_size_percent: %d",
compaction_options_universal.compression_size_percent);
Header(log,
"Options.compaction_options_fifo.max_table_files_size: %" PRIu64,
compaction_options_fifo.max_table_files_size);
std::string collector_names;
for (const auto& collector_factory : table_properties_collector_factories) {
collector_names.append(collector_factory->Name());
collector_names.append("; ");
}
Header(log, " Options.table_properties_collectors: %s",
collector_names.c_str());
Header(log, " Options.inplace_update_support: %d",
inplace_update_support);
Header(log,
" Options.inplace_update_num_locks: %" ROCKSDB_PRIszt,
inplace_update_num_locks);
Header(log, " Options.min_partial_merge_operands: %u",
min_partial_merge_operands);
// TODO: easier config for bloom (maybe based on avg key/value size)
Header(log, " Options.memtable_prefix_bloom_size_ratio: %f",
memtable_prefix_bloom_size_ratio);
Header(log, " Options.memtable_huge_page_size: %" ROCKSDB_PRIszt,
memtable_huge_page_size);
Header(log, " Options.bloom_locality: %d",
bloom_locality);
Header(log,
" Options.max_successive_merges: %" ROCKSDB_PRIszt,
max_successive_merges);
Header(log, " Options.optimize_filters_for_hits: %d",
optimize_filters_for_hits);
Header(log, " Options.paranoid_file_checks: %d",
paranoid_file_checks);
Header(log, " Options.force_consistency_checks: %d",
force_consistency_checks);
Header(log, " Options.report_bg_io_stats: %d",
report_bg_io_stats);
} // ColumnFamilyOptions::Dump
void Options::Dump(Logger* log) const {
DBOptions::Dump(log);
ColumnFamilyOptions::Dump(log);
} // Options::Dump
void Options::DumpCFOptions(Logger* log) const {
ColumnFamilyOptions::Dump(log);
} // Options::DumpCFOptions
//
// The goal of this method is to create a configuration that
// allows an application to write all files into L0 and
// then do a single compaction to output all files into L1.
Options*
Options::PrepareForBulkLoad()
{
// never slowdown ingest.
level0_file_num_compaction_trigger = (1<<30);
level0_slowdown_writes_trigger = (1<<30);
level0_stop_writes_trigger = (1<<30);
soft_pending_compaction_bytes_limit = 0;
hard_pending_compaction_bytes_limit = 0;
// no auto compactions please. The application should issue a
// manual compaction after all data is loaded into L0.
disable_auto_compactions = true;
disableDataSync = true;
// A manual compaction run should pick all files in L0 in
// a single compaction run.
max_compaction_bytes = (static_cast<uint64_t>(1) << 60);
// It is better to have only 2 levels, otherwise a manual
// compaction would compact at every possible level, thereby
// increasing the total time needed for compactions.
num_levels = 2;
// Need to allow more write buffers to allow more parallism
// of flushes.
max_write_buffer_number = 6;
min_write_buffer_number_to_merge = 1;
// When compaction is disabled, more parallel flush threads can
// help with write throughput.
max_background_flushes = 4;
// Prevent a memtable flush to automatically promote files
// to L1. This is helpful so that all files that are
// input to the manual compaction are all at L0.
max_background_compactions = 2;
base_background_compactions = 2;
// The compaction would create large files in L1.
target_file_size_base = 256 * 1024 * 1024;
return this;
}
Options* Options::OptimizeForSmallDb() {
ColumnFamilyOptions::OptimizeForSmallDb();
DBOptions::OptimizeForSmallDb();
return this;
}
Options* Options::OldDefaults(int rocksdb_major_version,
int rocksdb_minor_version) {
ColumnFamilyOptions::OldDefaults(rocksdb_major_version,
rocksdb_minor_version);
DBOptions::OldDefaults(rocksdb_major_version, rocksdb_minor_version);
return this;
}
DBOptions* DBOptions::OldDefaults(int rocksdb_major_version,
int rocksdb_minor_version) {
if (rocksdb_major_version < 4 ||
(rocksdb_major_version == 4 && rocksdb_minor_version < 7)) {
max_file_opening_threads = 1;
table_cache_numshardbits = 4;
}
max_open_files = 5000;
base_background_compactions = -1;
wal_recovery_mode = WALRecoveryMode::kTolerateCorruptedTailRecords;
return this;
}
ColumnFamilyOptions* ColumnFamilyOptions::OldDefaults(
int rocksdb_major_version, int rocksdb_minor_version) {
if (rocksdb_major_version < 4 ||
(rocksdb_major_version == 4 && rocksdb_minor_version < 7)) {
write_buffer_size = 4 << 20;
target_file_size_base = 2 * 1048576;
max_bytes_for_level_base = 10 * 1048576;
soft_pending_compaction_bytes_limit = 0;
hard_pending_compaction_bytes_limit = 0;
}
compaction_pri = CompactionPri::kByCompensatedSize;
return this;
}
// Optimization functions
DBOptions* DBOptions::OptimizeForSmallDb() {
max_file_opening_threads = 1;
max_open_files = 5000;
return this;
}
ColumnFamilyOptions* ColumnFamilyOptions::OptimizeForSmallDb() {
write_buffer_size = 2 << 20;
target_file_size_base = 2 * 1048576;
max_bytes_for_level_base = 10 * 1048576;
soft_pending_compaction_bytes_limit = 256 * 1048576;
hard_pending_compaction_bytes_limit = 1073741824ul;
return this;
}
#ifndef ROCKSDB_LITE
ColumnFamilyOptions* ColumnFamilyOptions::OptimizeForPointLookup(
uint64_t block_cache_size_mb) {
prefix_extractor.reset(NewNoopTransform());
BlockBasedTableOptions block_based_options;
block_based_options.index_type = BlockBasedTableOptions::kHashSearch;
block_based_options.filter_policy.reset(NewBloomFilterPolicy(10));
block_based_options.block_cache =
NewLRUCache(static_cast<size_t>(block_cache_size_mb * 1024 * 1024));
table_factory.reset(new BlockBasedTableFactory(block_based_options));
memtable_factory.reset(NewHashLinkListRepFactory());
return this;
}
ColumnFamilyOptions* ColumnFamilyOptions::OptimizeLevelStyleCompaction(
uint64_t memtable_memory_budget) {
write_buffer_size = static_cast<size_t>(memtable_memory_budget / 4);
// merge two memtables when flushing to L0
min_write_buffer_number_to_merge = 2;
// this means we'll use 50% extra memory in the worst case, but will reduce
// write stalls.
max_write_buffer_number = 6;
// start flushing L0->L1 as soon as possible. each file on level0 is
// (memtable_memory_budget / 2). This will flush level 0 when it's bigger than
// memtable_memory_budget.
level0_file_num_compaction_trigger = 2;
// doesn't really matter much, but we don't want to create too many files
target_file_size_base = memtable_memory_budget / 8;
// make Level1 size equal to Level0 size, so that L0->L1 compactions are fast
max_bytes_for_level_base = memtable_memory_budget;
// level style compaction
compaction_style = kCompactionStyleLevel;
// only compress levels >= 2
compression_per_level.resize(num_levels);
for (int i = 0; i < num_levels; ++i) {
if (i < 2) {
compression_per_level[i] = kNoCompression;
} else {
compression_per_level[i] = kSnappyCompression;
}
}
return this;
}
ColumnFamilyOptions* ColumnFamilyOptions::OptimizeUniversalStyleCompaction(
uint64_t memtable_memory_budget) {
write_buffer_size = static_cast<size_t>(memtable_memory_budget / 4);
// merge two memtables when flushing to L0
min_write_buffer_number_to_merge = 2;
// this means we'll use 50% extra memory in the worst case, but will reduce
// write stalls.
max_write_buffer_number = 6;
// universal style compaction
compaction_style = kCompactionStyleUniversal;
compaction_options_universal.compression_size_percent = 80;
return this;
}
DBOptions* DBOptions::IncreaseParallelism(int total_threads) {
max_background_compactions = total_threads - 1;
max_background_flushes = 1;
env->SetBackgroundThreads(total_threads, Env::LOW);
env->SetBackgroundThreads(1, Env::HIGH);
return this;
}
#endif // !ROCKSDB_LITE
ReadOptions::ReadOptions()
: verify_checksums(true),
fill_cache(true),
snapshot(nullptr),
iterate_upper_bound(nullptr),
read_tier(kReadAllTier),
tailing(false),
managed(false),
total_order_seek(false),
prefix_same_as_start(false),
pin_data(false),
background_purge_on_iterator_cleanup(false),
readahead_size(0),
ignore_range_deletions(false) {
XFUNC_TEST("", "managed_options", managed_options, xf_manage_options,
reinterpret_cast<ReadOptions*>(this));
}
ReadOptions::ReadOptions(bool cksum, bool cache)
: verify_checksums(cksum),
fill_cache(cache),
snapshot(nullptr),
iterate_upper_bound(nullptr),
read_tier(kReadAllTier),
tailing(false),
managed(false),
total_order_seek(false),
prefix_same_as_start(false),
pin_data(false),
background_purge_on_iterator_cleanup(false),
readahead_size(0),
ignore_range_deletions(false) {
XFUNC_TEST("", "managed_options", managed_options, xf_manage_options,
reinterpret_cast<ReadOptions*>(this));
}
} // namespace rocksdb
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