# This is a RocksDB option file. # # A typical RocksDB options file has three sections, which are # Version, DBOptions, and more than one CFOptions. The RocksDB # options file in general follows the basic INI file format # with the following extensions / modifications: # # * Escaped characters # We escaped the following characters: # - \n -- line feed - new line # - \r -- carriage return # - \\ -- backslash \ # - \: -- colon symbol : # - \# -- hash tag # # * Comments # We support # style comments. Comments can appear at the ending # part of a line. # * Statements # A statement is of the form option_name = value. # Each statement contains a '=', where extra white-spaces # are supported. However, we don't support multi-lined statement. # Furthermore, each line can only contain at most one statement. # * Section # Sections are of the form [SecitonTitle "SectionArgument"], # where section argument is optional. # * List # We use colon-separated string to represent a list. # For instance, n1:n2:n3:n4 is a list containing four values. # # Below is an example of a RocksDB options file: [Version] rocksdb_version=4.0.0 options_file_version=1.1 [DBOptions] stats_dump_period_sec=600 max_manifest_file_size=18446744073709551615 bytes_per_sync=0 delayed_write_rate=1048576 WAL_ttl_seconds=0 WAL_size_limit_MB=0 max_subcompactions=1 wal_dir= wal_bytes_per_sync=0 db_write_buffer_size=0 max_total_wal_size=0 skip_stats_update_on_db_open=false max_open_files=5000 max_file_opening_threads=1 use_fsync=false max_background_compactions=1 manifest_preallocation_size=4194304 max_background_flushes=1 is_fd_close_on_exec=true create_if_missing=false use_adaptive_mutex=false enable_thread_tracking=false disableDataSync=false max_log_file_size=0 advise_random_on_open=true create_missing_column_families=false keep_log_file_num=1000 table_cache_numshardbits=4 error_if_exists=false skip_log_error_on_recovery=false allow_os_buffer=true allow_mmap_reads=false paranoid_checks=true delete_obsolete_files_period_micros=21600000000 disable_data_sync=false log_file_time_to_roll=0 compaction_readahead_size=0 db_log_dir= new_table_reader_for_compaction_inputs=false allow_mmap_writes=false [CFOptions "default"] compaction_style=kCompactionStyleLevel compaction_filter=nullptr num_levels=7 table_factory=BlockBasedTable comparator=leveldb.BytewiseComparator max_sequential_skip_in_iterations=8 soft_rate_limit=0.000000 max_bytes_for_level_base=536870912 memtable_prefix_bloom_probes=6 memtable_prefix_bloom_bits=0 memtable_prefix_bloom_huge_page_tlb_size=0 max_successive_merges=0 arena_block_size=0 min_write_buffer_number_to_merge=2 target_file_size_multiplier=1 source_compaction_factor=1 max_bytes_for_level_multiplier=10 compaction_filter_factory=nullptr max_write_buffer_number=6 level0_stop_writes_trigger=24 compression=kSnappyCompression level0_file_num_compaction_trigger=2 purge_redundant_kvs_while_flush=true max_write_buffer_number_to_maintain=0 memtable_factory=SkipListFactory max_grandparent_overlap_factor=10 expanded_compaction_factor=25 hard_pending_compaction_bytes_limit=0 inplace_update_num_locks=10000 level_compaction_dynamic_level_bytes=false level0_slowdown_writes_trigger=20 filter_deletes=false verify_checksums_in_compaction=true min_partial_merge_operands=2 paranoid_file_checks=false target_file_size_base=67108864 optimize_filters_for_hits=false merge_operator=nullptr compression_per_level=kNoCompression:kNoCompression:kSnappyCompression:kSnappyCompression:kSnappyCompression:kSnappyCompression:kSnappyCompression compaction_measure_io_stats=false prefix_extractor=nullptr bloom_locality=0 write_buffer_size=134217728 disable_auto_compactions=false inplace_update_support=false [TableOptions/BlockBasedTable "default"] format_version=0 whole_key_filtering=true block_size_deviation=10 block_size=4096 block_restart_interval=16 filter_policy=nullptr no_block_cache=false checksum=kCRC32c cache_index_and_filter_blocks=false index_type=kBinarySearch hash_index_allow_collision=true flush_block_policy_factory=FlushBlockBySizePolicyFactory [CFOptions "universal"] compaction_style=kCompactionStyleUniversal compaction_filter=nullptr num_levels=7 table_factory=BlockBasedTable comparator=leveldb.BytewiseComparator max_sequential_skip_in_iterations=8 soft_rate_limit=0.000000 max_bytes_for_level_base=10485760 memtable_prefix_bloom_probes=6 memtable_prefix_bloom_bits=0 memtable_prefix_bloom_huge_page_tlb_size=0 max_successive_merges=0 arena_block_size=0 min_write_buffer_number_to_merge=2 target_file_size_multiplier=1 source_compaction_factor=1 max_bytes_for_level_multiplier=10 compaction_filter_factory=nullptr max_write_buffer_number=6 level0_stop_writes_trigger=24 compression=kSnappyCompression level0_file_num_compaction_trigger=4 purge_redundant_kvs_while_flush=true max_write_buffer_number_to_maintain=0 memtable_factory=SkipListFactory max_grandparent_overlap_factor=10 expanded_compaction_factor=25 hard_pending_compaction_bytes_limit=0 inplace_update_num_locks=10000 level_compaction_dynamic_level_bytes=false level0_slowdown_writes_trigger=20 filter_deletes=false verify_checksums_in_compaction=true min_partial_merge_operands=2 paranoid_file_checks=false target_file_size_base=2097152 optimize_filters_for_hits=false merge_operator=nullptr compression_per_level= compaction_measure_io_stats=false prefix_extractor=nullptr bloom_locality=0 write_buffer_size=134217728 disable_auto_compactions=false inplace_update_support=false [TableOptions/BlockBasedTable "universal"] format_version=0 whole_key_filtering=true block_size_deviation=10 block_size=4096 block_restart_interval=16 filter_policy=nullptr no_block_cache=false checksum=kCRC32c cache_index_and_filter_blocks=false index_type=kBinarySearch hash_index_allow_collision=true flush_block_policy_factory=FlushBlockBySizePolicyFactory