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rocksdb/options/cf_options.h

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// 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).
#pragma once
#include <string>
#include <vector>
#include "db/dbformat.h"
#include "options/db_options.h"
#include "rocksdb/options.h"
#include "util/compression.h"
namespace ROCKSDB_NAMESPACE {
// ImmutableCFOptions is a data struct used by RocksDB internal. It contains a
// subset of Options that should not be changed during the entire lifetime
// of DB. Raw pointers defined in this struct do not have ownership to the data
// they point to. Options contains std::shared_ptr to these data.
struct ImmutableCFOptions {
public:
static const char* kName() { return "ImmutableCFOptions"; }
explicit ImmutableCFOptions();
explicit ImmutableCFOptions(const ColumnFamilyOptions& cf_options);
CompactionStyle compaction_style;
CompactionPri compaction_pri;
const Comparator* user_comparator;
InternalKeyComparator internal_comparator; // Only in Immutable
std::shared_ptr<MergeOperator> merge_operator;
const CompactionFilter* compaction_filter;
std::shared_ptr<CompactionFilterFactory> compaction_filter_factory;
int min_write_buffer_number_to_merge;
int max_write_buffer_number_to_maintain;
int64_t max_write_buffer_size_to_maintain;
bool inplace_update_support;
UpdateStatus (*inplace_callback)(char* existing_value,
uint32_t* existing_value_size,
Slice delta_value,
std::string* merged_value);
std::shared_ptr<MemTableRepFactory> memtable_factory;
std::shared_ptr<TableFactory> table_factory;
Options::TablePropertiesCollectorFactories
table_properties_collector_factories;
// This options is required by PlainTableReader. May need to move it
// to PlainTableOptions just like bloom_bits_per_key
uint32_t bloom_locality;
bool level_compaction_dynamic_level_bytes;
bool level_compaction_dynamic_file_size;
int num_levels;
bool optimize_filters_for_hits;
bool force_consistency_checks;
uint64_t preclude_last_level_data_seconds;
uint64_t preserve_internal_time_seconds;
std::shared_ptr<const SliceTransform>
memtable_insert_with_hint_prefix_extractor;
std::vector<DbPath> cf_paths;
std::shared_ptr<ConcurrentTaskLimiter> compaction_thread_limiter;
std::shared_ptr<SstPartitionerFactory> sst_partitioner_factory;
std::shared_ptr<Cache> blob_cache;
};
struct ImmutableOptions : public ImmutableDBOptions, public ImmutableCFOptions {
explicit ImmutableOptions();
explicit ImmutableOptions(const Options& options);
ImmutableOptions(const DBOptions& db_options,
const ColumnFamilyOptions& cf_options);
ImmutableOptions(const ImmutableDBOptions& db_options,
const ImmutableCFOptions& cf_options);
ImmutableOptions(const DBOptions& db_options,
const ImmutableCFOptions& cf_options);
ImmutableOptions(const ImmutableDBOptions& db_options,
const ColumnFamilyOptions& cf_options);
};
struct MutableCFOptions {
static const char* kName() { return "MutableCFOptions"; }
explicit MutableCFOptions(const ColumnFamilyOptions& options)
: write_buffer_size(options.write_buffer_size),
max_write_buffer_number(options.max_write_buffer_number),
arena_block_size(options.arena_block_size),
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),
max_successive_merges(options.max_successive_merges),
inplace_update_num_locks(options.inplace_update_num_locks),
prefix_extractor(options.prefix_extractor),
experimental_mempurge_threshold(
options.experimental_mempurge_threshold),
disable_auto_compactions(options.disable_auto_compactions),
soft_pending_compaction_bytes_limit(
options.soft_pending_compaction_bytes_limit),
hard_pending_compaction_bytes_limit(
options.hard_pending_compaction_bytes_limit),
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),
max_compaction_bytes(options.max_compaction_bytes),
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),
max_bytes_for_level_multiplier(options.max_bytes_for_level_multiplier),
ttl(options.ttl),
periodic_compaction_seconds(options.periodic_compaction_seconds),
max_bytes_for_level_multiplier_additional(
options.max_bytes_for_level_multiplier_additional),
compaction_options_fifo(options.compaction_options_fifo),
compaction_options_universal(options.compaction_options_universal),
enable_blob_files(options.enable_blob_files),
min_blob_size(options.min_blob_size),
blob_file_size(options.blob_file_size),
blob_compression_type(options.blob_compression_type),
enable_blob_garbage_collection(options.enable_blob_garbage_collection),
blob_garbage_collection_age_cutoff(
options.blob_garbage_collection_age_cutoff),
blob_garbage_collection_force_threshold(
options.blob_garbage_collection_force_threshold),
blob_compaction_readahead_size(options.blob_compaction_readahead_size),
blob_file_starting_level(options.blob_file_starting_level),
prepopulate_blob_cache(options.prepopulate_blob_cache),
max_sequential_skip_in_iterations(
options.max_sequential_skip_in_iterations),
check_flush_compaction_key_order(
options.check_flush_compaction_key_order),
paranoid_file_checks(options.paranoid_file_checks),
report_bg_io_stats(options.report_bg_io_stats),
compression(options.compression),
bottommost_compression(options.bottommost_compression),
compression_opts(options.compression_opts),
bottommost_compression_opts(options.bottommost_compression_opts),
last_level_temperature(options.last_level_temperature ==
Temperature::kUnknown
? options.bottommost_temperature
: options.last_level_temperature),
memtable_protection_bytes_per_key(
options.memtable_protection_bytes_per_key),
sample_for_compression(
options.sample_for_compression), // TODO: is 0 fine here?
compression_per_level(options.compression_per_level) {
RefreshDerivedOptions(options.num_levels, options.compaction_style);
}
MutableCFOptions()
: write_buffer_size(0),
max_write_buffer_number(0),
arena_block_size(0),
memtable_prefix_bloom_size_ratio(0),
memtable_whole_key_filtering(false),
memtable_huge_page_size(0),
max_successive_merges(0),
inplace_update_num_locks(0),
prefix_extractor(nullptr),
experimental_mempurge_threshold(0.0),
disable_auto_compactions(false),
soft_pending_compaction_bytes_limit(0),
hard_pending_compaction_bytes_limit(0),
level0_file_num_compaction_trigger(0),
level0_slowdown_writes_trigger(0),
level0_stop_writes_trigger(0),
max_compaction_bytes(0),
target_file_size_base(0),
target_file_size_multiplier(0),
max_bytes_for_level_base(0),
max_bytes_for_level_multiplier(0),
ttl(0),
periodic_compaction_seconds(0),
compaction_options_fifo(),
enable_blob_files(false),
min_blob_size(0),
blob_file_size(0),
blob_compression_type(kNoCompression),
enable_blob_garbage_collection(false),
blob_garbage_collection_age_cutoff(0.0),
blob_garbage_collection_force_threshold(0.0),
blob_compaction_readahead_size(0),
blob_file_starting_level(0),
prepopulate_blob_cache(PrepopulateBlobCache::kDisable),
max_sequential_skip_in_iterations(0),
check_flush_compaction_key_order(true),
paranoid_file_checks(false),
report_bg_io_stats(false),
compression(Snappy_Supported() ? kSnappyCompression : kNoCompression),
bottommost_compression(kDisableCompressionOption),
last_level_temperature(Temperature::kUnknown),
memtable_protection_bytes_per_key(0),
sample_for_compression(0) {}
explicit MutableCFOptions(const Options& options);
// Must be called after any change to MutableCFOptions
void RefreshDerivedOptions(int num_levels, CompactionStyle compaction_style);
void RefreshDerivedOptions(const ImmutableCFOptions& ioptions) {
RefreshDerivedOptions(ioptions.num_levels, ioptions.compaction_style);
}
int MaxBytesMultiplerAdditional(int level) const {
if (level >=
static_cast<int>(max_bytes_for_level_multiplier_additional.size())) {
return 1;
}
return max_bytes_for_level_multiplier_additional[level];
}
void Dump(Logger* log) const;
// Memtable related options
size_t write_buffer_size;
int max_write_buffer_number;
size_t arena_block_size;
double memtable_prefix_bloom_size_ratio;
bool memtable_whole_key_filtering;
size_t memtable_huge_page_size;
size_t max_successive_merges;
size_t inplace_update_num_locks;
std::shared_ptr<const SliceTransform> prefix_extractor;
// [experimental]
// Used to activate or deactive the Mempurge feature (memtable garbage
// collection). (deactivated by default). At every flush, the total useful
// payload (total entries minus garbage entries) is estimated as a ratio
// [useful payload bytes]/[size of a memtable (in bytes)]. This ratio is then
// compared to this `threshold` value:
// - if ratio<threshold: the flush is replaced by a mempurge operation
// - else: a regular flush operation takes place.
// Threshold values:
// 0.0: mempurge deactivated (default).
// 1.0: recommended threshold value.
// >1.0 : aggressive mempurge.
// 0 < threshold < 1.0: mempurge triggered only for very low useful payload
// ratios.
// [experimental]
double experimental_mempurge_threshold;
// Compaction related options
bool disable_auto_compactions;
uint64_t soft_pending_compaction_bytes_limit;
uint64_t hard_pending_compaction_bytes_limit;
int level0_file_num_compaction_trigger;
int level0_slowdown_writes_trigger;
int level0_stop_writes_trigger;
uint64_t max_compaction_bytes;
uint64_t target_file_size_base;
int target_file_size_multiplier;
uint64_t max_bytes_for_level_base;
double max_bytes_for_level_multiplier;
uint64_t ttl;
uint64_t periodic_compaction_seconds;
std::vector<int> max_bytes_for_level_multiplier_additional;
CompactionOptionsFIFO compaction_options_fifo;
CompactionOptionsUniversal compaction_options_universal;
// Blob file related options
bool enable_blob_files;
uint64_t min_blob_size;
uint64_t blob_file_size;
CompressionType blob_compression_type;
bool enable_blob_garbage_collection;
double blob_garbage_collection_age_cutoff;
double blob_garbage_collection_force_threshold;
uint64_t blob_compaction_readahead_size;
int blob_file_starting_level;
PrepopulateBlobCache prepopulate_blob_cache;
// Misc options
uint64_t max_sequential_skip_in_iterations;
bool check_flush_compaction_key_order;
bool paranoid_file_checks;
bool report_bg_io_stats;
CompressionType compression;
CompressionType bottommost_compression;
CompressionOptions compression_opts;
CompressionOptions bottommost_compression_opts;
Temperature last_level_temperature;
uint32_t memtable_protection_bytes_per_key;
uint64_t sample_for_compression;
std::vector<CompressionType> compression_per_level;
// Derived options
// Per-level target file size.
std::vector<uint64_t> max_file_size;
};
uint64_t MultiplyCheckOverflow(uint64_t op1, double op2);
// Get the max file size in a given level.
uint64_t MaxFileSizeForLevel(const MutableCFOptions& cf_options,
int level, CompactionStyle compaction_style, int base_level = 1,
bool level_compaction_dynamic_level_bytes = false);
// Get the max size of an L0 file for which we will pin its meta-blocks when
// `pin_l0_filter_and_index_blocks_in_cache` is set.
size_t MaxFileSizeForL0MetaPin(const MutableCFOptions& cf_options);
#ifndef ROCKSDB_LITE
Status GetStringFromMutableCFOptions(const ConfigOptions& config_options,
const MutableCFOptions& mutable_opts,
std::string* opt_string);
Status GetMutableOptionsFromStrings(
const MutableCFOptions& base_options,
const std::unordered_map<std::string, std::string>& options_map,
Logger* info_log, MutableCFOptions* new_options);
#endif // ROCKSDB_LITE
} // namespace ROCKSDB_NAMESPACE