cd4592c220
Summary: SST Partitioner interface that allows to split SST files during compactions. It basically instruct compaction to create a new file when needed. When one is using well defined prefixes and prefixed way of defining tables it is good to define also partitioning so that promotion of some SST file does not cover huge key space on next level (worst case complete space). Pull Request resolved: https://github.com/facebook/rocksdb/pull/6957 Reviewed By: ajkr Differential Revision: D22461239 fbshipit-source-id: 9ce07bba08b3ba89c2d45630520368f704d1316e
642 lines
26 KiB
C++
642 lines
26 KiB
C++
// Copyright (c) 2011-present, Facebook, Inc. All rights reserved.
|
|
// This source code is licensed under both the GPLv2 (found in the
|
|
// COPYING file in the root directory) and Apache 2.0 License
|
|
// (found in the LICENSE.Apache file in the root 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"
|
|
|
|
#include <cinttypes>
|
|
#include <limits>
|
|
|
|
#include "monitoring/statistics.h"
|
|
#include "options/db_options.h"
|
|
#include "options/options_helper.h"
|
|
#include "rocksdb/cache.h"
|
|
#include "rocksdb/compaction_filter.h"
|
|
#include "rocksdb/comparator.h"
|
|
#include "rocksdb/env.h"
|
|
#include "rocksdb/memtablerep.h"
|
|
#include "rocksdb/merge_operator.h"
|
|
#include "rocksdb/slice.h"
|
|
#include "rocksdb/slice_transform.h"
|
|
#include "rocksdb/sst_file_manager.h"
|
|
#include "rocksdb/sst_partitioner.h"
|
|
#include "rocksdb/table.h"
|
|
#include "rocksdb/table_properties.h"
|
|
#include "rocksdb/wal_filter.h"
|
|
#include "table/block_based/block_based_table_factory.h"
|
|
#include "util/compression.h"
|
|
|
|
namespace ROCKSDB_NAMESPACE {
|
|
|
|
AdvancedColumnFamilyOptions::AdvancedColumnFamilyOptions() {
|
|
assert(memtable_factory.get() != nullptr);
|
|
}
|
|
|
|
AdvancedColumnFamilyOptions::AdvancedColumnFamilyOptions(const Options& options)
|
|
: 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),
|
|
max_write_buffer_size_to_maintain(
|
|
options.max_write_buffer_size_to_maintain),
|
|
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_whole_key_filtering(options.memtable_whole_key_filtering),
|
|
memtable_huge_page_size(options.memtable_huge_page_size),
|
|
memtable_insert_with_hint_prefix_extractor(
|
|
options.memtable_insert_with_hint_prefix_extractor),
|
|
bloom_locality(options.bloom_locality),
|
|
arena_block_size(options.arena_block_size),
|
|
compression_per_level(options.compression_per_level),
|
|
num_levels(options.num_levels),
|
|
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),
|
|
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_pending_compaction_bytes_limit(
|
|
options.soft_pending_compaction_bytes_limit),
|
|
hard_pending_compaction_bytes_limit(
|
|
options.hard_pending_compaction_bytes_limit),
|
|
compaction_style(options.compaction_style),
|
|
compaction_pri(options.compaction_pri),
|
|
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_properties_collector_factories(
|
|
options.table_properties_collector_factories),
|
|
max_successive_merges(options.max_successive_merges),
|
|
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),
|
|
ttl(options.ttl),
|
|
periodic_compaction_seconds(options.periodic_compaction_seconds),
|
|
sample_for_compression(options.sample_for_compression) {
|
|
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);
|
|
}
|
|
}
|
|
|
|
ColumnFamilyOptions::ColumnFamilyOptions()
|
|
: compression(Snappy_Supported() ? kSnappyCompression : kNoCompression),
|
|
table_factory(
|
|
std::shared_ptr<TableFactory>(new BlockBasedTableFactory())) {}
|
|
|
|
ColumnFamilyOptions::ColumnFamilyOptions(const Options& options)
|
|
: ColumnFamilyOptions(*static_cast<const ColumnFamilyOptions*>(&options)) {}
|
|
|
|
DBOptions::DBOptions() {}
|
|
DBOptions::DBOptions(const Options& options)
|
|
: DBOptions(*static_cast<const DBOptions*>(&options)) {}
|
|
|
|
void DBOptions::Dump(Logger* log) const {
|
|
ImmutableDBOptions(*this).Dump(log);
|
|
MutableDBOptions(*this).Dump(log);
|
|
} // DBOptions::Dump
|
|
|
|
void ColumnFamilyOptions::Dump(Logger* log) const {
|
|
ROCKS_LOG_HEADER(log, " Options.comparator: %s",
|
|
comparator->Name());
|
|
ROCKS_LOG_HEADER(log, " Options.merge_operator: %s",
|
|
merge_operator ? merge_operator->Name() : "None");
|
|
ROCKS_LOG_HEADER(log, " Options.compaction_filter: %s",
|
|
compaction_filter ? compaction_filter->Name() : "None");
|
|
ROCKS_LOG_HEADER(
|
|
log, " Options.compaction_filter_factory: %s",
|
|
compaction_filter_factory ? compaction_filter_factory->Name() : "None");
|
|
ROCKS_LOG_HEADER(
|
|
log, " Options.sst_partitioner_factory: %s",
|
|
sst_partitioner_factory ? sst_partitioner_factory->Name() : "None");
|
|
ROCKS_LOG_HEADER(log, " Options.memtable_factory: %s",
|
|
memtable_factory->Name());
|
|
ROCKS_LOG_HEADER(log, " Options.table_factory: %s",
|
|
table_factory->Name());
|
|
ROCKS_LOG_HEADER(log, " table_factory options: %s",
|
|
table_factory->GetPrintableTableOptions().c_str());
|
|
ROCKS_LOG_HEADER(log, " Options.write_buffer_size: %" ROCKSDB_PRIszt,
|
|
write_buffer_size);
|
|
ROCKS_LOG_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++) {
|
|
ROCKS_LOG_HEADER(
|
|
log, " Options.compression[%d]: %s", i,
|
|
CompressionTypeToString(compression_per_level[i]).c_str());
|
|
}
|
|
} else {
|
|
ROCKS_LOG_HEADER(log, " Options.compression: %s",
|
|
CompressionTypeToString(compression).c_str());
|
|
}
|
|
ROCKS_LOG_HEADER(
|
|
log, " Options.bottommost_compression: %s",
|
|
bottommost_compression == kDisableCompressionOption
|
|
? "Disabled"
|
|
: CompressionTypeToString(bottommost_compression).c_str());
|
|
ROCKS_LOG_HEADER(
|
|
log, " Options.prefix_extractor: %s",
|
|
prefix_extractor == nullptr ? "nullptr" : prefix_extractor->Name());
|
|
ROCKS_LOG_HEADER(log,
|
|
" Options.memtable_insert_with_hint_prefix_extractor: %s",
|
|
memtable_insert_with_hint_prefix_extractor == nullptr
|
|
? "nullptr"
|
|
: memtable_insert_with_hint_prefix_extractor->Name());
|
|
ROCKS_LOG_HEADER(log, " Options.num_levels: %d", num_levels);
|
|
ROCKS_LOG_HEADER(log, " Options.min_write_buffer_number_to_merge: %d",
|
|
min_write_buffer_number_to_merge);
|
|
ROCKS_LOG_HEADER(log, " Options.max_write_buffer_number_to_maintain: %d",
|
|
max_write_buffer_number_to_maintain);
|
|
ROCKS_LOG_HEADER(log,
|
|
" Options.max_write_buffer_size_to_maintain: %" PRIu64,
|
|
max_write_buffer_size_to_maintain);
|
|
ROCKS_LOG_HEADER(
|
|
log, " Options.bottommost_compression_opts.window_bits: %d",
|
|
bottommost_compression_opts.window_bits);
|
|
ROCKS_LOG_HEADER(
|
|
log, " Options.bottommost_compression_opts.level: %d",
|
|
bottommost_compression_opts.level);
|
|
ROCKS_LOG_HEADER(
|
|
log, " Options.bottommost_compression_opts.strategy: %d",
|
|
bottommost_compression_opts.strategy);
|
|
ROCKS_LOG_HEADER(
|
|
log,
|
|
" Options.bottommost_compression_opts.max_dict_bytes: "
|
|
"%" PRIu32,
|
|
bottommost_compression_opts.max_dict_bytes);
|
|
ROCKS_LOG_HEADER(
|
|
log,
|
|
" Options.bottommost_compression_opts.zstd_max_train_bytes: "
|
|
"%" PRIu32,
|
|
bottommost_compression_opts.zstd_max_train_bytes);
|
|
ROCKS_LOG_HEADER(
|
|
log,
|
|
" Options.bottommost_compression_opts.parallel_threads: "
|
|
"%" PRIu32,
|
|
bottommost_compression_opts.parallel_threads);
|
|
ROCKS_LOG_HEADER(
|
|
log, " Options.bottommost_compression_opts.enabled: %s",
|
|
bottommost_compression_opts.enabled ? "true" : "false");
|
|
ROCKS_LOG_HEADER(log, " Options.compression_opts.window_bits: %d",
|
|
compression_opts.window_bits);
|
|
ROCKS_LOG_HEADER(log, " Options.compression_opts.level: %d",
|
|
compression_opts.level);
|
|
ROCKS_LOG_HEADER(log, " Options.compression_opts.strategy: %d",
|
|
compression_opts.strategy);
|
|
ROCKS_LOG_HEADER(
|
|
log,
|
|
" Options.compression_opts.max_dict_bytes: %" PRIu32,
|
|
compression_opts.max_dict_bytes);
|
|
ROCKS_LOG_HEADER(log,
|
|
" Options.compression_opts.zstd_max_train_bytes: "
|
|
"%" PRIu32,
|
|
compression_opts.zstd_max_train_bytes);
|
|
ROCKS_LOG_HEADER(log,
|
|
" Options.compression_opts.parallel_threads: "
|
|
"%" PRIu32,
|
|
compression_opts.parallel_threads);
|
|
ROCKS_LOG_HEADER(log,
|
|
" Options.compression_opts.enabled: %s",
|
|
compression_opts.enabled ? "true" : "false");
|
|
ROCKS_LOG_HEADER(log, " Options.level0_file_num_compaction_trigger: %d",
|
|
level0_file_num_compaction_trigger);
|
|
ROCKS_LOG_HEADER(log, " Options.level0_slowdown_writes_trigger: %d",
|
|
level0_slowdown_writes_trigger);
|
|
ROCKS_LOG_HEADER(log, " Options.level0_stop_writes_trigger: %d",
|
|
level0_stop_writes_trigger);
|
|
ROCKS_LOG_HEADER(
|
|
log, " Options.target_file_size_base: %" PRIu64,
|
|
target_file_size_base);
|
|
ROCKS_LOG_HEADER(log, " Options.target_file_size_multiplier: %d",
|
|
target_file_size_multiplier);
|
|
ROCKS_LOG_HEADER(
|
|
log, " Options.max_bytes_for_level_base: %" PRIu64,
|
|
max_bytes_for_level_base);
|
|
ROCKS_LOG_HEADER(log, "Options.level_compaction_dynamic_level_bytes: %d",
|
|
level_compaction_dynamic_level_bytes);
|
|
ROCKS_LOG_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++) {
|
|
ROCKS_LOG_HEADER(
|
|
log, "Options.max_bytes_for_level_multiplier_addtl[%" ROCKSDB_PRIszt
|
|
"]: %d",
|
|
i, max_bytes_for_level_multiplier_additional[i]);
|
|
}
|
|
ROCKS_LOG_HEADER(
|
|
log, " Options.max_sequential_skip_in_iterations: %" PRIu64,
|
|
max_sequential_skip_in_iterations);
|
|
ROCKS_LOG_HEADER(
|
|
log, " Options.max_compaction_bytes: %" PRIu64,
|
|
max_compaction_bytes);
|
|
ROCKS_LOG_HEADER(
|
|
log,
|
|
" Options.arena_block_size: %" ROCKSDB_PRIszt,
|
|
arena_block_size);
|
|
ROCKS_LOG_HEADER(log,
|
|
" Options.soft_pending_compaction_bytes_limit: %" PRIu64,
|
|
soft_pending_compaction_bytes_limit);
|
|
ROCKS_LOG_HEADER(log,
|
|
" Options.hard_pending_compaction_bytes_limit: %" PRIu64,
|
|
hard_pending_compaction_bytes_limit);
|
|
ROCKS_LOG_HEADER(log, " Options.rate_limit_delay_max_milliseconds: %u",
|
|
rate_limit_delay_max_milliseconds);
|
|
ROCKS_LOG_HEADER(log, " Options.disable_auto_compactions: %d",
|
|
disable_auto_compactions);
|
|
|
|
const auto& it_compaction_style =
|
|
compaction_style_to_string.find(compaction_style);
|
|
std::string str_compaction_style;
|
|
if (it_compaction_style == compaction_style_to_string.end()) {
|
|
assert(false);
|
|
str_compaction_style = "unknown_" + std::to_string(compaction_style);
|
|
} else {
|
|
str_compaction_style = it_compaction_style->second;
|
|
}
|
|
ROCKS_LOG_HEADER(log,
|
|
" Options.compaction_style: %s",
|
|
str_compaction_style.c_str());
|
|
|
|
const auto& it_compaction_pri =
|
|
compaction_pri_to_string.find(compaction_pri);
|
|
std::string str_compaction_pri;
|
|
if (it_compaction_pri == compaction_pri_to_string.end()) {
|
|
assert(false);
|
|
str_compaction_pri = "unknown_" + std::to_string(compaction_pri);
|
|
} else {
|
|
str_compaction_pri = it_compaction_pri->second;
|
|
}
|
|
ROCKS_LOG_HEADER(log,
|
|
" Options.compaction_pri: %s",
|
|
str_compaction_pri.c_str());
|
|
ROCKS_LOG_HEADER(log,
|
|
"Options.compaction_options_universal.size_ratio: %u",
|
|
compaction_options_universal.size_ratio);
|
|
ROCKS_LOG_HEADER(log,
|
|
"Options.compaction_options_universal.min_merge_width: %u",
|
|
compaction_options_universal.min_merge_width);
|
|
ROCKS_LOG_HEADER(log,
|
|
"Options.compaction_options_universal.max_merge_width: %u",
|
|
compaction_options_universal.max_merge_width);
|
|
ROCKS_LOG_HEADER(
|
|
log,
|
|
"Options.compaction_options_universal."
|
|
"max_size_amplification_percent: %u",
|
|
compaction_options_universal.max_size_amplification_percent);
|
|
ROCKS_LOG_HEADER(
|
|
log,
|
|
"Options.compaction_options_universal.compression_size_percent: %d",
|
|
compaction_options_universal.compression_size_percent);
|
|
const auto& it_compaction_stop_style = compaction_stop_style_to_string.find(
|
|
compaction_options_universal.stop_style);
|
|
std::string str_compaction_stop_style;
|
|
if (it_compaction_stop_style == compaction_stop_style_to_string.end()) {
|
|
assert(false);
|
|
str_compaction_stop_style =
|
|
"unknown_" + std::to_string(compaction_options_universal.stop_style);
|
|
} else {
|
|
str_compaction_stop_style = it_compaction_stop_style->second;
|
|
}
|
|
ROCKS_LOG_HEADER(log,
|
|
"Options.compaction_options_universal.stop_style: %s",
|
|
str_compaction_stop_style.c_str());
|
|
ROCKS_LOG_HEADER(
|
|
log, "Options.compaction_options_fifo.max_table_files_size: %" PRIu64,
|
|
compaction_options_fifo.max_table_files_size);
|
|
ROCKS_LOG_HEADER(log,
|
|
"Options.compaction_options_fifo.allow_compaction: %d",
|
|
compaction_options_fifo.allow_compaction);
|
|
std::ostringstream collector_info;
|
|
for (const auto& collector_factory : table_properties_collector_factories) {
|
|
collector_info << collector_factory->ToString() << ';';
|
|
}
|
|
ROCKS_LOG_HEADER(
|
|
log, " Options.table_properties_collectors: %s",
|
|
collector_info.str().c_str());
|
|
ROCKS_LOG_HEADER(log,
|
|
" Options.inplace_update_support: %d",
|
|
inplace_update_support);
|
|
ROCKS_LOG_HEADER(
|
|
log,
|
|
" Options.inplace_update_num_locks: %" ROCKSDB_PRIszt,
|
|
inplace_update_num_locks);
|
|
// TODO: easier config for bloom (maybe based on avg key/value size)
|
|
ROCKS_LOG_HEADER(
|
|
log, " Options.memtable_prefix_bloom_size_ratio: %f",
|
|
memtable_prefix_bloom_size_ratio);
|
|
ROCKS_LOG_HEADER(log,
|
|
" Options.memtable_whole_key_filtering: %d",
|
|
memtable_whole_key_filtering);
|
|
|
|
ROCKS_LOG_HEADER(log, " Options.memtable_huge_page_size: %" ROCKSDB_PRIszt,
|
|
memtable_huge_page_size);
|
|
ROCKS_LOG_HEADER(log,
|
|
" Options.bloom_locality: %d",
|
|
bloom_locality);
|
|
|
|
ROCKS_LOG_HEADER(
|
|
log,
|
|
" Options.max_successive_merges: %" ROCKSDB_PRIszt,
|
|
max_successive_merges);
|
|
ROCKS_LOG_HEADER(log,
|
|
" Options.optimize_filters_for_hits: %d",
|
|
optimize_filters_for_hits);
|
|
ROCKS_LOG_HEADER(log, " Options.paranoid_file_checks: %d",
|
|
paranoid_file_checks);
|
|
ROCKS_LOG_HEADER(log, " Options.force_consistency_checks: %d",
|
|
force_consistency_checks);
|
|
ROCKS_LOG_HEADER(log, " Options.report_bg_io_stats: %d",
|
|
report_bg_io_stats);
|
|
ROCKS_LOG_HEADER(log, " Options.ttl: %" PRIu64,
|
|
ttl);
|
|
ROCKS_LOG_HEADER(log,
|
|
" Options.periodic_compaction_seconds: %" PRIu64,
|
|
periodic_compaction_seconds);
|
|
} // 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;
|
|
// 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;
|
|
|
|
// The compaction would create large files in L1.
|
|
target_file_size_base = 256 * 1024 * 1024;
|
|
return this;
|
|
}
|
|
|
|
Options* Options::OptimizeForSmallDb() {
|
|
// 16MB block cache
|
|
std::shared_ptr<Cache> cache = NewLRUCache(16 << 20);
|
|
|
|
ColumnFamilyOptions::OptimizeForSmallDb(&cache);
|
|
DBOptions::OptimizeForSmallDb(&cache);
|
|
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;
|
|
}
|
|
if (rocksdb_major_version < 5 ||
|
|
(rocksdb_major_version == 5 && rocksdb_minor_version < 2)) {
|
|
delayed_write_rate = 2 * 1024U * 1024U;
|
|
} else if (rocksdb_major_version < 5 ||
|
|
(rocksdb_major_version == 5 && rocksdb_minor_version < 6)) {
|
|
delayed_write_rate = 16 * 1024U * 1024U;
|
|
}
|
|
max_open_files = 5000;
|
|
wal_recovery_mode = WALRecoveryMode::kTolerateCorruptedTailRecords;
|
|
return this;
|
|
}
|
|
|
|
ColumnFamilyOptions* ColumnFamilyOptions::OldDefaults(
|
|
int rocksdb_major_version, int rocksdb_minor_version) {
|
|
if (rocksdb_major_version < 5 ||
|
|
(rocksdb_major_version == 5 && rocksdb_minor_version <= 18)) {
|
|
compaction_pri = CompactionPri::kByCompensatedSize;
|
|
}
|
|
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;
|
|
}
|
|
if (rocksdb_major_version < 5) {
|
|
level0_stop_writes_trigger = 24;
|
|
} else if (rocksdb_major_version == 5 && rocksdb_minor_version < 2) {
|
|
level0_stop_writes_trigger = 30;
|
|
}
|
|
|
|
return this;
|
|
}
|
|
|
|
// Optimization functions
|
|
DBOptions* DBOptions::OptimizeForSmallDb(std::shared_ptr<Cache>* cache) {
|
|
max_file_opening_threads = 1;
|
|
max_open_files = 5000;
|
|
|
|
// Cost memtable to block cache too.
|
|
std::shared_ptr<ROCKSDB_NAMESPACE::WriteBufferManager> wbm =
|
|
std::make_shared<ROCKSDB_NAMESPACE::WriteBufferManager>(
|
|
0, (cache != nullptr) ? *cache : std::shared_ptr<Cache>());
|
|
write_buffer_manager = wbm;
|
|
|
|
return this;
|
|
}
|
|
|
|
ColumnFamilyOptions* ColumnFamilyOptions::OptimizeForSmallDb(
|
|
std::shared_ptr<Cache>* cache) {
|
|
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;
|
|
|
|
BlockBasedTableOptions table_options;
|
|
table_options.block_cache =
|
|
(cache != nullptr) ? *cache : std::shared_ptr<Cache>();
|
|
table_options.cache_index_and_filter_blocks = true;
|
|
// Two level iterator to avoid LRU cache imbalance
|
|
table_options.index_type =
|
|
BlockBasedTableOptions::IndexType::kTwoLevelIndexSearch;
|
|
table_factory.reset(new BlockBasedTableFactory(table_options));
|
|
|
|
return this;
|
|
}
|
|
|
|
#ifndef ROCKSDB_LITE
|
|
ColumnFamilyOptions* ColumnFamilyOptions::OptimizeForPointLookup(
|
|
uint64_t block_cache_size_mb) {
|
|
BlockBasedTableOptions block_based_options;
|
|
block_based_options.data_block_index_type =
|
|
BlockBasedTableOptions::kDataBlockBinaryAndHash;
|
|
block_based_options.data_block_hash_table_util_ratio = 0.75;
|
|
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_prefix_bloom_size_ratio = 0.02;
|
|
memtable_whole_key_filtering = true;
|
|
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] =
|
|
LZ4_Supported()
|
|
? kLZ4Compression
|
|
: (Snappy_Supported() ? kSnappyCompression : kNoCompression);
|
|
}
|
|
}
|
|
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_jobs = total_threads;
|
|
env->SetBackgroundThreads(total_threads, Env::LOW);
|
|
env->SetBackgroundThreads(1, Env::HIGH);
|
|
return this;
|
|
}
|
|
|
|
#endif // !ROCKSDB_LITE
|
|
|
|
ReadOptions::ReadOptions()
|
|
: snapshot(nullptr),
|
|
iterate_lower_bound(nullptr),
|
|
iterate_upper_bound(nullptr),
|
|
readahead_size(0),
|
|
max_skippable_internal_keys(0),
|
|
read_tier(kReadAllTier),
|
|
verify_checksums(true),
|
|
fill_cache(true),
|
|
tailing(false),
|
|
managed(false),
|
|
total_order_seek(false),
|
|
auto_prefix_mode(false),
|
|
prefix_same_as_start(false),
|
|
pin_data(false),
|
|
background_purge_on_iterator_cleanup(false),
|
|
ignore_range_deletions(false),
|
|
iter_start_seqnum(0),
|
|
timestamp(nullptr),
|
|
iter_start_ts(nullptr),
|
|
deadline(std::chrono::microseconds::zero()),
|
|
value_size_soft_limit(std::numeric_limits<uint64_t>::max()) {}
|
|
|
|
ReadOptions::ReadOptions(bool cksum, bool cache)
|
|
: snapshot(nullptr),
|
|
iterate_lower_bound(nullptr),
|
|
iterate_upper_bound(nullptr),
|
|
readahead_size(0),
|
|
max_skippable_internal_keys(0),
|
|
read_tier(kReadAllTier),
|
|
verify_checksums(cksum),
|
|
fill_cache(cache),
|
|
tailing(false),
|
|
managed(false),
|
|
total_order_seek(false),
|
|
auto_prefix_mode(false),
|
|
prefix_same_as_start(false),
|
|
pin_data(false),
|
|
background_purge_on_iterator_cleanup(false),
|
|
ignore_range_deletions(false),
|
|
iter_start_seqnum(0),
|
|
timestamp(nullptr),
|
|
iter_start_ts(nullptr),
|
|
deadline(std::chrono::microseconds::zero()),
|
|
value_size_soft_limit(std::numeric_limits<uint64_t>::max()) {}
|
|
|
|
} // namespace ROCKSDB_NAMESPACE
|