6fbc4f9f3e
introduce a new DBOption random_access_max_buffer_size to limit the size of the random access buffer used for unbuffered access. Implement read ahead buffering when enabled. To that effect propagate compaction_readahead_size and the new option to the env options to make it available for the implementation. Add Hint() override so SetupForCompaction() call would call Hint() readahead can now be setup from both Hint() and EnableReadAhead() Add new option random_access_max_buffer_size support db_bench, options_helper to make it string parsable and the unit test.
468 lines
21 KiB
C++
468 lines
21 KiB
C++
// Copyright (c) 2014, Facebook, Inc. All rights reserved.
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// This source code is licensed under the BSD-style license found in the
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// LICENSE file in the root directory of this source tree. An additional grant
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// of patent rights can be found in the PATENTS file in the same directory.
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#pragma once
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#include <string>
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#include <stdexcept>
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#include "rocksdb/options.h"
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#include "rocksdb/status.h"
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#include "rocksdb/table.h"
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#include "util/mutable_cf_options.h"
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#ifndef ROCKSDB_LITE
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namespace rocksdb {
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// Returns true if the input char "c" is considered as a special character
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// that will be escaped when EscapeOptionString() is called.
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//
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// @param c the input char
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// @return true if the input char "c" is considered as a special character.
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// @see EscapeOptionString
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bool isSpecialChar(const char c);
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// If the input char is an escaped char, it will return the its
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// associated raw-char. Otherwise, the function will simply return
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// the original input char.
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char UnescapeChar(const char c);
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// If the input char is a control char, it will return the its
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// associated escaped char. Otherwise, the function will simply return
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// the original input char.
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char EscapeChar(const char c);
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// Converts a raw string to an escaped string. Escaped-characters are
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// defined via the isSpecialChar() function. When a char in the input
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// string "raw_string" is classified as a special characters, then it
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// will be prefixed by '\' in the output.
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//
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// It's inverse function is UnescapeOptionString().
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// @param raw_string the input string
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// @return the '\' escaped string of the input "raw_string"
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// @see isSpecialChar, UnescapeOptionString
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std::string EscapeOptionString(const std::string& raw_string);
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// The inverse function of EscapeOptionString. It converts
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// an '\' escaped string back to a raw string.
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//
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// @param escaped_string the input '\' escaped string
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// @return the raw string of the input "escaped_string"
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std::string UnescapeOptionString(const std::string& escaped_string);
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Status GetMutableOptionsFromStrings(
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const MutableCFOptions& base_options,
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const std::unordered_map<std::string, std::string>& options_map,
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MutableCFOptions* new_options);
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Status GetTableFactoryFromMap(
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const std::string& factory_name,
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const std::unordered_map<std::string, std::string>& opt_map,
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std::shared_ptr<TableFactory>* table_factory);
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Status GetStringFromTableFactory(std::string* opts_str, const TableFactory* tf,
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const std::string& delimiter = "; ");
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enum class OptionType {
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kBoolean,
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kInt,
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kUInt,
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kUInt32T,
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kUInt64T,
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kSizeT,
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kString,
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kDouble,
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kCompactionStyle,
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kSliceTransform,
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kCompressionType,
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kVectorCompressionType,
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kTableFactory,
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kComparator,
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kCompactionFilter,
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kCompactionFilterFactory,
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kMergeOperator,
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kMemTableRepFactory,
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kBlockBasedTableIndexType,
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kFilterPolicy,
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kFlushBlockPolicyFactory,
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kChecksumType,
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kUnknown
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};
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enum class OptionVerificationType {
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kNormal,
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kByName, // The option is pointer typed so we can only verify
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// based on it's name.
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kDeprecated // The option is no longer used in rocksdb. The RocksDB
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// OptionsParser will still accept this option if it
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// happen to exists in some Options file. However, the
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// parser will not include it in serialization and
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// verification processes.
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};
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// A struct for storing constant option information such as option name,
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// option type, and offset.
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struct OptionTypeInfo {
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int offset;
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OptionType type;
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OptionVerificationType verification;
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};
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// A helper function that converts "opt_address" to a std::string
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// based on the specified OptionType.
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bool SerializeSingleOptionHelper(const char* opt_address,
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const OptionType opt_type, std::string* value);
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static std::unordered_map<std::string, OptionTypeInfo> db_options_type_info = {
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/*
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// not yet supported
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AccessHint access_hint_on_compaction_start;
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Env* env;
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InfoLogLevel info_log_level;
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WALRecoveryMode wal_recovery_mode;
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std::shared_ptr<Cache> row_cache;
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std::shared_ptr<DeleteScheduler> delete_scheduler;
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std::shared_ptr<Logger> info_log;
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std::shared_ptr<RateLimiter> rate_limiter;
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std::shared_ptr<Statistics> statistics;
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std::vector<DbPath> db_paths;
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std::vector<std::shared_ptr<EventListener>> listeners;
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*/
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{"advise_random_on_open",
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{offsetof(struct DBOptions, advise_random_on_open), OptionType::kBoolean,
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OptionVerificationType::kNormal}},
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{"allow_mmap_reads",
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{offsetof(struct DBOptions, allow_mmap_reads), OptionType::kBoolean,
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OptionVerificationType::kNormal}},
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{"allow_fallocate",
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{offsetof(struct DBOptions, allow_fallocate), OptionType::kBoolean,
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OptionVerificationType::kNormal}},
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{"allow_mmap_writes",
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{offsetof(struct DBOptions, allow_mmap_writes), OptionType::kBoolean,
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OptionVerificationType::kNormal}},
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{"allow_os_buffer",
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{offsetof(struct DBOptions, allow_os_buffer), OptionType::kBoolean,
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OptionVerificationType::kNormal}},
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{"create_if_missing",
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{offsetof(struct DBOptions, create_if_missing), OptionType::kBoolean,
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OptionVerificationType::kNormal}},
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{"create_missing_column_families",
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{offsetof(struct DBOptions, create_missing_column_families),
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OptionType::kBoolean, OptionVerificationType::kNormal}},
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{"disableDataSync",
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{offsetof(struct DBOptions, disableDataSync), OptionType::kBoolean,
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OptionVerificationType::kNormal}},
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{"disable_data_sync", // for compatibility
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{offsetof(struct DBOptions, disableDataSync), OptionType::kBoolean,
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OptionVerificationType::kNormal}},
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{"enable_thread_tracking",
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{offsetof(struct DBOptions, enable_thread_tracking), OptionType::kBoolean,
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OptionVerificationType::kNormal}},
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{"error_if_exists",
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{offsetof(struct DBOptions, error_if_exists), OptionType::kBoolean,
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OptionVerificationType::kNormal}},
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{"is_fd_close_on_exec",
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{offsetof(struct DBOptions, is_fd_close_on_exec), OptionType::kBoolean,
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OptionVerificationType::kNormal}},
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{"paranoid_checks",
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{offsetof(struct DBOptions, paranoid_checks), OptionType::kBoolean,
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OptionVerificationType::kNormal}},
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{"skip_log_error_on_recovery",
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{offsetof(struct DBOptions, skip_log_error_on_recovery),
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OptionType::kBoolean, OptionVerificationType::kNormal}},
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{"skip_stats_update_on_db_open",
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{offsetof(struct DBOptions, skip_stats_update_on_db_open),
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OptionType::kBoolean, OptionVerificationType::kNormal}},
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{"new_table_reader_for_compaction_inputs",
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{offsetof(struct DBOptions, new_table_reader_for_compaction_inputs),
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OptionType::kBoolean, OptionVerificationType::kNormal}},
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{"compaction_readahead_size",
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{offsetof(struct DBOptions, compaction_readahead_size), OptionType::kSizeT,
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OptionVerificationType::kNormal}},
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{"random_access_max_buffer_size",
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{ offsetof(struct DBOptions, random_access_max_buffer_size), OptionType::kSizeT,
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OptionVerificationType::kNormal}},
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{"use_adaptive_mutex",
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{offsetof(struct DBOptions, use_adaptive_mutex), OptionType::kBoolean,
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OptionVerificationType::kNormal}},
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{"use_fsync",
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{offsetof(struct DBOptions, use_fsync), OptionType::kBoolean,
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OptionVerificationType::kNormal}},
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{"max_background_compactions",
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{offsetof(struct DBOptions, max_background_compactions), OptionType::kInt,
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OptionVerificationType::kNormal}},
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{"max_background_flushes",
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{offsetof(struct DBOptions, max_background_flushes), OptionType::kInt,
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OptionVerificationType::kNormal}},
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{"max_file_opening_threads",
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{offsetof(struct DBOptions, max_file_opening_threads), OptionType::kInt,
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OptionVerificationType::kNormal}},
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{"max_open_files",
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{offsetof(struct DBOptions, max_open_files), OptionType::kInt,
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OptionVerificationType::kNormal}},
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{"table_cache_numshardbits",
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{offsetof(struct DBOptions, table_cache_numshardbits), OptionType::kInt,
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OptionVerificationType::kNormal}},
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{"db_write_buffer_size",
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{offsetof(struct DBOptions, db_write_buffer_size), OptionType::kSizeT,
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OptionVerificationType::kNormal}},
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{"keep_log_file_num",
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{offsetof(struct DBOptions, keep_log_file_num), OptionType::kSizeT,
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OptionVerificationType::kNormal}},
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{"recycle_log_file_num",
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{offsetof(struct DBOptions, recycle_log_file_num), OptionType::kSizeT,
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OptionVerificationType::kNormal}},
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{"log_file_time_to_roll",
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{offsetof(struct DBOptions, log_file_time_to_roll), OptionType::kSizeT,
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OptionVerificationType::kNormal}},
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{"manifest_preallocation_size",
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{offsetof(struct DBOptions, manifest_preallocation_size),
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OptionType::kSizeT, OptionVerificationType::kNormal}},
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{"max_log_file_size",
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{offsetof(struct DBOptions, max_log_file_size), OptionType::kSizeT,
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OptionVerificationType::kNormal}},
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{"db_log_dir",
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{offsetof(struct DBOptions, db_log_dir), OptionType::kString,
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OptionVerificationType::kNormal}},
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{"wal_dir",
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{offsetof(struct DBOptions, wal_dir), OptionType::kString,
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OptionVerificationType::kNormal}},
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{"max_subcompactions",
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{offsetof(struct DBOptions, max_subcompactions), OptionType::kUInt32T,
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OptionVerificationType::kNormal}},
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{"WAL_size_limit_MB",
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{offsetof(struct DBOptions, WAL_size_limit_MB), OptionType::kUInt64T,
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OptionVerificationType::kNormal}},
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{"WAL_ttl_seconds",
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{offsetof(struct DBOptions, WAL_ttl_seconds), OptionType::kUInt64T,
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OptionVerificationType::kNormal}},
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{"bytes_per_sync",
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{offsetof(struct DBOptions, bytes_per_sync), OptionType::kUInt64T,
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OptionVerificationType::kNormal}},
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{"delayed_write_rate",
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{offsetof(struct DBOptions, delayed_write_rate), OptionType::kUInt64T,
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OptionVerificationType::kNormal}},
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{"delete_obsolete_files_period_micros",
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{offsetof(struct DBOptions, delete_obsolete_files_period_micros),
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OptionType::kUInt64T, OptionVerificationType::kNormal}},
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{"max_manifest_file_size",
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{offsetof(struct DBOptions, max_manifest_file_size), OptionType::kUInt64T,
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OptionVerificationType::kNormal}},
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{"max_total_wal_size",
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{offsetof(struct DBOptions, max_total_wal_size), OptionType::kUInt64T,
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OptionVerificationType::kNormal}},
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{"wal_bytes_per_sync",
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{offsetof(struct DBOptions, wal_bytes_per_sync), OptionType::kUInt64T,
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OptionVerificationType::kNormal}},
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{"stats_dump_period_sec",
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{offsetof(struct DBOptions, stats_dump_period_sec), OptionType::kUInt,
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OptionVerificationType::kNormal}}};
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static std::unordered_map<std::string, OptionTypeInfo> cf_options_type_info = {
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/* not yet supported
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CompactionOptionsFIFO compaction_options_fifo;
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CompactionOptionsUniversal compaction_options_universal;
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CompressionOptions compression_opts;
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TablePropertiesCollectorFactories table_properties_collector_factories;
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typedef std::vector<std::shared_ptr<TablePropertiesCollectorFactory>>
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TablePropertiesCollectorFactories;
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UpdateStatus (*inplace_callback)(char* existing_value,
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uint34_t* existing_value_size,
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Slice delta_value,
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std::string* merged_value);
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std::vector<int> max_bytes_for_level_multiplier_additional;
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*/
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{"compaction_measure_io_stats",
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{offsetof(struct ColumnFamilyOptions, compaction_measure_io_stats),
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OptionType::kBoolean, OptionVerificationType::kNormal}},
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{"disable_auto_compactions",
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{offsetof(struct ColumnFamilyOptions, disable_auto_compactions),
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OptionType::kBoolean, OptionVerificationType::kNormal}},
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{"filter_deletes",
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{offsetof(struct ColumnFamilyOptions, filter_deletes),
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OptionType::kBoolean, OptionVerificationType::kNormal}},
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{"inplace_update_support",
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{offsetof(struct ColumnFamilyOptions, inplace_update_support),
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OptionType::kBoolean, OptionVerificationType::kNormal}},
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{"level_compaction_dynamic_level_bytes",
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{offsetof(struct ColumnFamilyOptions,
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level_compaction_dynamic_level_bytes),
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OptionType::kBoolean, OptionVerificationType::kNormal}},
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{"optimize_filters_for_hits",
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{offsetof(struct ColumnFamilyOptions, optimize_filters_for_hits),
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OptionType::kBoolean, OptionVerificationType::kNormal}},
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{"paranoid_file_checks",
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{offsetof(struct ColumnFamilyOptions, paranoid_file_checks),
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OptionType::kBoolean, OptionVerificationType::kNormal}},
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{"purge_redundant_kvs_while_flush",
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{offsetof(struct ColumnFamilyOptions, purge_redundant_kvs_while_flush),
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OptionType::kBoolean, OptionVerificationType::kNormal}},
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{"verify_checksums_in_compaction",
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{offsetof(struct ColumnFamilyOptions, verify_checksums_in_compaction),
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OptionType::kBoolean, OptionVerificationType::kNormal}},
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{"hard_pending_compaction_bytes_limit",
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{offsetof(struct ColumnFamilyOptions, hard_pending_compaction_bytes_limit),
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OptionType::kUInt64T, OptionVerificationType::kNormal}},
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{"hard_rate_limit",
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{offsetof(struct ColumnFamilyOptions, hard_rate_limit),
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OptionType::kDouble, OptionVerificationType::kDeprecated}},
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{"soft_rate_limit",
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{offsetof(struct ColumnFamilyOptions, soft_rate_limit),
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OptionType::kDouble, OptionVerificationType::kNormal}},
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{"expanded_compaction_factor",
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{offsetof(struct ColumnFamilyOptions, expanded_compaction_factor),
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OptionType::kInt, OptionVerificationType::kNormal}},
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{"level0_file_num_compaction_trigger",
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{offsetof(struct ColumnFamilyOptions, level0_file_num_compaction_trigger),
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OptionType::kInt, OptionVerificationType::kNormal}},
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{"level0_slowdown_writes_trigger",
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{offsetof(struct ColumnFamilyOptions, level0_slowdown_writes_trigger),
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OptionType::kInt, OptionVerificationType::kNormal}},
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{"level0_stop_writes_trigger",
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{offsetof(struct ColumnFamilyOptions, level0_stop_writes_trigger),
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OptionType::kInt, OptionVerificationType::kNormal}},
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{"max_bytes_for_level_multiplier",
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{offsetof(struct ColumnFamilyOptions, max_bytes_for_level_multiplier),
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OptionType::kInt, OptionVerificationType::kNormal}},
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{"max_grandparent_overlap_factor",
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{offsetof(struct ColumnFamilyOptions, max_grandparent_overlap_factor),
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OptionType::kInt, OptionVerificationType::kNormal}},
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{"max_mem_compaction_level",
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{offsetof(struct ColumnFamilyOptions, max_mem_compaction_level),
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OptionType::kInt, OptionVerificationType::kDeprecated}},
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{"max_write_buffer_number",
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{offsetof(struct ColumnFamilyOptions, max_write_buffer_number),
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OptionType::kInt, OptionVerificationType::kNormal}},
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{"max_write_buffer_number_to_maintain",
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{offsetof(struct ColumnFamilyOptions, max_write_buffer_number_to_maintain),
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OptionType::kInt, OptionVerificationType::kNormal}},
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{"min_write_buffer_number_to_merge",
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{offsetof(struct ColumnFamilyOptions, min_write_buffer_number_to_merge),
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OptionType::kInt, OptionVerificationType::kNormal}},
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{"num_levels",
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{offsetof(struct ColumnFamilyOptions, num_levels), OptionType::kInt,
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OptionVerificationType::kNormal}},
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{"source_compaction_factor",
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{offsetof(struct ColumnFamilyOptions, source_compaction_factor),
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OptionType::kInt, OptionVerificationType::kNormal}},
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{"target_file_size_multiplier",
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{offsetof(struct ColumnFamilyOptions, target_file_size_multiplier),
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OptionType::kInt, OptionVerificationType::kNormal}},
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{"arena_block_size",
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{offsetof(struct ColumnFamilyOptions, arena_block_size),
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OptionType::kSizeT, OptionVerificationType::kNormal}},
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{"inplace_update_num_locks",
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{offsetof(struct ColumnFamilyOptions, inplace_update_num_locks),
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OptionType::kSizeT, OptionVerificationType::kNormal}},
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{"max_successive_merges",
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{offsetof(struct ColumnFamilyOptions, max_successive_merges),
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OptionType::kSizeT, OptionVerificationType::kNormal}},
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{"memtable_prefix_bloom_huge_page_tlb_size",
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{offsetof(struct ColumnFamilyOptions,
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memtable_prefix_bloom_huge_page_tlb_size),
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OptionType::kSizeT, OptionVerificationType::kNormal}},
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{"write_buffer_size",
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{offsetof(struct ColumnFamilyOptions, write_buffer_size),
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OptionType::kSizeT, OptionVerificationType::kNormal}},
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{"bloom_locality",
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{offsetof(struct ColumnFamilyOptions, bloom_locality),
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OptionType::kUInt32T, OptionVerificationType::kNormal}},
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{"memtable_prefix_bloom_bits",
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{offsetof(struct ColumnFamilyOptions, memtable_prefix_bloom_bits),
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OptionType::kUInt32T, OptionVerificationType::kNormal}},
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{"memtable_prefix_bloom_probes",
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{offsetof(struct ColumnFamilyOptions, memtable_prefix_bloom_probes),
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OptionType::kUInt32T, OptionVerificationType::kNormal}},
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{"min_partial_merge_operands",
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{offsetof(struct ColumnFamilyOptions, min_partial_merge_operands),
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OptionType::kUInt32T, OptionVerificationType::kNormal}},
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{"max_bytes_for_level_base",
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{offsetof(struct ColumnFamilyOptions, max_bytes_for_level_base),
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OptionType::kUInt64T, OptionVerificationType::kNormal}},
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{"max_sequential_skip_in_iterations",
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{offsetof(struct ColumnFamilyOptions, max_sequential_skip_in_iterations),
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OptionType::kUInt64T, OptionVerificationType::kNormal}},
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{"target_file_size_base",
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{offsetof(struct ColumnFamilyOptions, target_file_size_base),
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OptionType::kUInt64T, OptionVerificationType::kNormal}},
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{"rate_limit_delay_max_milliseconds",
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{offsetof(struct ColumnFamilyOptions, rate_limit_delay_max_milliseconds),
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OptionType::kUInt, OptionVerificationType::kDeprecated}},
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{"compression",
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{offsetof(struct ColumnFamilyOptions, compression),
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OptionType::kCompressionType, OptionVerificationType::kNormal}},
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{"compression_per_level",
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{offsetof(struct ColumnFamilyOptions, compression_per_level),
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OptionType::kVectorCompressionType, OptionVerificationType::kNormal}},
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{"comparator",
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{offsetof(struct ColumnFamilyOptions, comparator), OptionType::kComparator,
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OptionVerificationType::kByName}},
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{"prefix_extractor",
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{offsetof(struct ColumnFamilyOptions, prefix_extractor),
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OptionType::kSliceTransform, OptionVerificationType::kByName}},
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{"memtable_factory",
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{offsetof(struct ColumnFamilyOptions, memtable_factory),
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OptionType::kMemTableRepFactory, OptionVerificationType::kByName}},
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{"table_factory",
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{offsetof(struct ColumnFamilyOptions, table_factory),
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OptionType::kTableFactory, OptionVerificationType::kByName}},
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|
{"compaction_filter",
|
|
{offsetof(struct ColumnFamilyOptions, compaction_filter),
|
|
OptionType::kCompactionFilter, OptionVerificationType::kByName}},
|
|
{"compaction_filter_factory",
|
|
{offsetof(struct ColumnFamilyOptions, compaction_filter_factory),
|
|
OptionType::kCompactionFilterFactory, OptionVerificationType::kByName}},
|
|
{"merge_operator",
|
|
{offsetof(struct ColumnFamilyOptions, merge_operator),
|
|
OptionType::kMergeOperator, OptionVerificationType::kByName}},
|
|
{"compaction_style",
|
|
{offsetof(struct ColumnFamilyOptions, compaction_style),
|
|
OptionType::kCompactionStyle, OptionVerificationType::kNormal}}};
|
|
|
|
static std::unordered_map<std::string,
|
|
OptionTypeInfo> block_based_table_type_info = {
|
|
/* currently not supported
|
|
std::shared_ptr<Cache> block_cache = nullptr;
|
|
std::shared_ptr<Cache> block_cache_compressed = nullptr;
|
|
*/
|
|
{"flush_block_policy_factory",
|
|
{offsetof(struct BlockBasedTableOptions, flush_block_policy_factory),
|
|
OptionType::kFlushBlockPolicyFactory, OptionVerificationType::kByName}},
|
|
{"cache_index_and_filter_blocks",
|
|
{offsetof(struct BlockBasedTableOptions, cache_index_and_filter_blocks),
|
|
OptionType::kBoolean, OptionVerificationType::kNormal}},
|
|
{"index_type",
|
|
{offsetof(struct BlockBasedTableOptions, index_type),
|
|
OptionType::kBlockBasedTableIndexType, OptionVerificationType::kNormal}},
|
|
{"hash_index_allow_collision",
|
|
{offsetof(struct BlockBasedTableOptions, hash_index_allow_collision),
|
|
OptionType::kBoolean, OptionVerificationType::kNormal}},
|
|
{"checksum",
|
|
{offsetof(struct BlockBasedTableOptions, checksum),
|
|
OptionType::kChecksumType, OptionVerificationType::kNormal}},
|
|
{"no_block_cache",
|
|
{offsetof(struct BlockBasedTableOptions, no_block_cache),
|
|
OptionType::kBoolean, OptionVerificationType::kNormal}},
|
|
{"block_size",
|
|
{offsetof(struct BlockBasedTableOptions, block_size), OptionType::kSizeT,
|
|
OptionVerificationType::kNormal}},
|
|
{"block_size_deviation",
|
|
{offsetof(struct BlockBasedTableOptions, block_size_deviation),
|
|
OptionType::kInt, OptionVerificationType::kNormal}},
|
|
{"block_restart_interval",
|
|
{offsetof(struct BlockBasedTableOptions, block_restart_interval),
|
|
OptionType::kInt, OptionVerificationType::kNormal}},
|
|
{"filter_policy",
|
|
{offsetof(struct BlockBasedTableOptions, filter_policy),
|
|
OptionType::kFilterPolicy, OptionVerificationType::kByName}},
|
|
{"whole_key_filtering",
|
|
{offsetof(struct BlockBasedTableOptions, whole_key_filtering),
|
|
OptionType::kBoolean, OptionVerificationType::kNormal}},
|
|
{"format_version",
|
|
{offsetof(struct BlockBasedTableOptions, format_version),
|
|
OptionType::kUInt32T, OptionVerificationType::kNormal}}};
|
|
} // namespace rocksdb
|
|
|
|
#endif // !ROCKSDB_LITE
|