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https://github.com/facebook/rocksdb.git
synced 2026-07-07 14:47:40 +08:00
Xingbo Wang
ac4d563dd1
Summary: Add a new argument --random_seed to script db_crashtest.py to allow reusing the same random seed to produce exactly same test argument. When the argument is missing, a random seed is used, and printed. When developer wants to reproduce the exactly same setup, they could use the same seed with --random_seed for reproduction. The example below shows running the command without and with the argument. All of the arguments are same, except --db and --expected_values_dir, which does not use python random. * Without --random_seed, a new seed is generated and printed. ``` [xbw@devvm16622.vll0 ~/workspace/ws1/rocksdb (crashtest)]$ /usr/local/bin/python3 -u tools/db_crashtest.py --stress_cmd=./db_stress --cleanup_cmd='' --cf_consistency blackbox --duration=960 --max_key=2500000 Start with random seed 17953760416546706382 Running blackbox-crash-test with interval_between_crash=120 total-duration=960 Running db_stress with pid=2957716: ./db_stress --WAL_size_limit_MB=0 --WAL_ttl_seconds=60 --acquire_snapshot_one_in=10000 --adaptive_readahead=0 --adm_policy=0 --advise_random_on_open=1 --allow_data_in_errors=True --allow_fallocate=0 --allow_setting_blob_options_dynamically=1 --allow_unprepared_value=0 --async_io=1 --atomic_flush=1 --auto_readahead_size=0 --auto_refresh_iterator_with_snapshot=1 --avoid_flush_during_recovery=0 --avoid_flush_during_shutdown=1 --avoid_unnecessary_blocking_io=0 --backup_max_size=104857600 --backup_one_in=1000 --batch_protection_bytes_per_key=0 --bgerror_resume_retry_interval=100 --blob_cache_size=2097152 --blob_compaction_readahead_size=4194304 --blob_compression_type=zstd --blob_file_size=1073741824 --blob_file_starting_level=0 --blob_garbage_collection_age_cutoff=0.5 --blob_garbage_collection_force_threshold=0.75 --block_align=1 --block_protection_bytes_per_key=0 --block_size=16384 --bloom_before_level=1 --bloom_bits=12 --bottommost_compression_type=none --bottommost_file_compaction_delay=3600 --bytes_per_sync=262144 --cache_index_and_filter_blocks=1 --cache_index_and_filter_blocks_with_high_priority=0 --cache_size=8388608 --cache_type=auto_hyper_clock_cache --charge_compression_dictionary_building_buffer=0 --charge_file_metadata=0 --charge_filter_construction=0 --charge_table_reader=0 --check_multiget_consistency=0 --check_multiget_entity_consistency=1 --checkpoint_one_in=10000 --checksum_type=kxxHash64 --clear_column_family_one_in=0 --compact_files_one_in=1000000 --compact_range_one_in=1000000 --compaction_pri=0 --compaction_readahead_size=1048576 --compaction_style=0 --compaction_ttl=100 --compress_format_version=1 --compressed_secondary_cache_ratio=0.0 --compressed_secondary_cache_size=0 --compression_checksum=0 --compression_manager=none --compression_max_dict_buffer_bytes=0 --compression_max_dict_bytes=0 --compression_parallel_threads=1 --compression_type=none --compression_use_zstd_dict_trainer=1 --compression_zstd_max_train_bytes=0 --continuous_verification_interval=0 --daily_offpeak_time_utc=23:30-03:15 --data_block_index_type=0 --db=/tmp/rocksdb_crashtest_blackboxqishhgdc --db_write_buffer_size=0 --decouple_partitioned_filters=1 --default_temperature=kWarm --default_write_temperature=kCold --delete_obsolete_files_period_micros=30000000 --delpercent=4 --delrangepercent=1 --destroy_db_initially=0 --detect_filter_construct_corruption=0 --disable_file_deletions_one_in=10000 --disable_manual_compaction_one_in=10000 --disable_wal=1 --dump_malloc_stats=1 --enable_blob_files=1 --enable_blob_garbage_collection=1 --enable_checksum_handoff=0 --enable_compaction_filter=0 --enable_custom_split_merge=1 --enable_do_not_compress_roles=1 --enable_index_compression=0 --enable_memtable_insert_with_hint_prefix_extractor=0 --enable_pipelined_write=0 --enable_sst_partitioner_factory=1 --enable_thread_tracking=0 --enable_write_thread_adaptive_yield=0 --error_recovery_with_no_fault_injection=0 --exclude_wal_from_write_fault_injection=0 --expected_values_dir=/tmp/rocksdb_crashtest_expected_udz8mw68 --fifo_allow_compaction=0 --file_checksum_impl=crc32c --file_temperature_age_thresholds= --fill_cache=0 --flush_one_in=1000 --format_version=4 --get_all_column_family_metadata_one_in=1000000 --get_current_wal_file_one_in=0 --get_live_files_apis_one_in=10000 --get_properties_of_all_tables_one_in=1000000 --get_property_one_in=1000000 --get_sorted_wal_files_one_in=0 --hard_pending_compaction_bytes_limit=2097152 --high_pri_pool_ratio=0 --index_block_restart_interval=1 --index_shortening=2 --index_type=0 --ingest_external_file_one_in=0 --ingest_wbwi_one_in=500 --initial_auto_readahead_size=16384 --inplace_update_support=0 --iterpercent=10 --key_len_percent_dist=1,30,69 --key_may_exist_one_in=100000 --last_level_temperature=kUnknown --level_compaction_dynamic_level_bytes=0 --lock_wal_one_in=0 --log_file_time_to_roll=0 --log_readahead_size=16777216 --long_running_snapshots=1 --low_pri_pool_ratio=0 --lowest_used_cache_tier=2 --manifest_preallocation_size=0 --manual_wal_flush_one_in=0 --mark_for_compaction_one_file_in=10 --max_auto_readahead_size=16384 --max_background_compactions=20 --max_bytes_for_level_base=10485760 --max_key=2500000 --max_key_len=3 --max_log_file_size=0 --max_manifest_file_size=1073741824 --max_sequential_skip_in_iterations=8 --max_total_wal_size=0 --max_write_batch_group_size_bytes=16777216 --max_write_buffer_number=3 --max_write_buffer_size_to_maintain=1048576 --memtable_avg_op_scan_flush_trigger=2 --memtable_insert_hint_per_batch=0 --memtable_max_range_deletions=100 --memtable_op_scan_flush_trigger=10 --memtable_prefix_bloom_size_ratio=0.5 --memtable_protection_bytes_per_key=8 --memtable_whole_key_filtering=0 --memtablerep=skip_list --metadata_charge_policy=1 --metadata_read_fault_one_in=32 --metadata_write_fault_one_in=128 --min_blob_size=16 --min_write_buffer_number_to_merge=2 --mmap_read=0 --mock_direct_io=False --nooverwritepercent=1 --num_bottom_pri_threads=1 --num_file_reads_for_auto_readahead=2 --open_files=-1 --open_metadata_read_fault_one_in=0 --open_metadata_write_fault_one_in=0 --open_read_fault_one_in=0 --open_write_fault_one_in=0 --ops_per_thread=100000000 --optimize_filters_for_hits=1 --optimize_filters_for_memory=0 --optimize_multiget_for_io=0 --paranoid_file_checks=1 --paranoid_memory_checks=0 --partition_filters=0 --partition_pinning=1 --pause_background_one_in=10000 --periodic_compaction_seconds=1000 --prefix_size=5 --prefixpercent=5 --prepopulate_blob_cache=1 --prepopulate_block_cache=1 --preserve_internal_time_seconds=36000 --progress_reports=0 --promote_l0_one_in=0 --read_amp_bytes_per_bit=32 --read_fault_one_in=1000 --readahead_size=0 --readpercent=45 --recycle_log_file_num=0 --remote_compaction_worker_threads=0 --reopen=0 --report_bg_io_stats=1 --reset_stats_one_in=1000000 --sample_for_compression=5 --secondary_cache_fault_one_in=0 --secondary_cache_uri=compressed_secondary_cache://capacity=8388608;enable_custom_split_merge=true --set_options_one_in=1000 --skip_stats_update_on_db_open=0 --snapshot_hold_ops=100000 --soft_pending_compaction_bytes_limit=68719476736 --sqfc_name=foo --sqfc_version=2 --sst_file_manager_bytes_per_sec=0 --sst_file_manager_bytes_per_truncate=0 --stats_dump_period_sec=10 --stats_history_buffer_size=1048576 --strict_bytes_per_sync=0 --subcompactions=2 --sync=0 --sync_fault_injection=0 --table_cache_numshardbits=0 --target_file_size_base=524288 --target_file_size_multiplier=2 --test_batches_snapshots=0 --test_cf_consistency=1 --test_ingest_standalone_range_deletion_one_in=0 --top_level_index_pinning=0 --track_and_verify_wals=0 --uncache_aggressiveness=211 --universal_max_read_amp=4 --universal_reduce_file_locking=0 --unpartitioned_pinning=0 --use_adaptive_mutex=1 --use_adaptive_mutex_lru=1 --use_attribute_group=1 --use_blob_cache=0 --use_delta_encoding=0 --use_direct_io_for_flush_and_compaction=1 --use_direct_reads=0 --use_full_merge_v1=0 --use_get_entity=0 --use_merge=0 --use_multi_cf_iterator=0 --use_multi_get_entity=0 --use_multiget=1 --use_multiscan=0 --use_put_entity_one_in=0 --use_shared_block_and_blob_cache=0 --use_sqfc_for_range_queries=1 --use_timed_put_one_in=0 --use_write_buffer_manager=0 --user_timestamp_size=0 --value_size_mult=32 --verification_only=0 --verify_checksum=1 --verify_checksum_one_in=1000 --verify_compression=0 --verify_db_one_in=10000 --verify_file_checksums_one_in=1000000 --verify_iterator_with_expected_state_one_in=0 --verify_sst_unique_id_in_manifest=1 --wal_bytes_per_sync=0 --wal_compression=none --write_buffer_size=1048576 --write_dbid_to_manifest=0 --write_fault_one_in=0 --write_identity_file=1 --writepercent=35 ``` * With --random_seed, the seed specified in the argument is used. ``` [xbw@devvm16622.vll0 ~/workspace/ws1/rocksdb (crashtest)]$ /usr/local/bin/python3 -u tools/db_crashtest.py --stress_cmd=./db_stress --cleanup_cmd='' --cf_consistency blackbox --duration=960 --max_key=2500000 --random_seed=17953760416546706382 Start with random seed 17953760416546706382 Running blackbox-crash-test with interval_between_crash=120 total-duration=960 Running db_stress with pid=2959006: ./db_stress --WAL_size_limit_MB=0 --WAL_ttl_seconds=60 --acquire_snapshot_one_in=10000 --adaptive_readahead=0 --adm_policy=0 --advise_random_on_open=1 --allow_data_in_errors=True --allow_fallocate=0 --allow_setting_blob_options_dynamically=1 --allow_unprepared_value=0 --async_io=1 --atomic_flush=1 --auto_readahead_size=0 --auto_refresh_iterator_with_snapshot=1 --avoid_flush_during_recovery=0 --avoid_flush_during_shutdown=1 --avoid_unnecessary_blocking_io=0 --backup_max_size=104857600 --backup_one_in=1000 --batch_protection_bytes_per_key=0 --bgerror_resume_retry_interval=100 --blob_cache_size=2097152 --blob_compaction_readahead_size=4194304 --blob_compression_type=zstd --blob_file_size=1073741824 --blob_file_starting_level=0 --blob_garbage_collection_age_cutoff=0.5 --blob_garbage_collection_force_threshold=0.75 --block_align=1 --block_protection_bytes_per_key=0 --block_size=16384 --bloom_before_level=1 --bloom_bits=12 --bottommost_compression_type=none --bottommost_file_compaction_delay=3600 --bytes_per_sync=262144 --cache_index_and_filter_blocks=1 --cache_index_and_filter_blocks_with_high_priority=0 --cache_size=8388608 --cache_type=auto_hyper_clock_cache --charge_compression_dictionary_building_buffer=0 --charge_file_metadata=0 --charge_filter_construction=0 --charge_table_reader=0 --check_multiget_consistency=0 --check_multiget_entity_consistency=1 --checkpoint_one_in=10000 --checksum_type=kxxHash64 --clear_column_family_one_in=0 --compact_files_one_in=1000000 --compact_range_one_in=1000000 --compaction_pri=0 --compaction_readahead_size=1048576 --compaction_style=0 --compaction_ttl=100 --compress_format_version=1 --compressed_secondary_cache_ratio=0.0 --compressed_secondary_cache_size=0 --compression_checksum=0 --compression_manager=none --compression_max_dict_buffer_bytes=0 --compression_max_dict_bytes=0 --compression_parallel_threads=1 --compression_type=none --compression_use_zstd_dict_trainer=1 --compression_zstd_max_train_bytes=0 --continuous_verification_interval=0 --daily_offpeak_time_utc=23:30-03:15 --data_block_index_type=0 --db=/tmp/rocksdb_crashtest_blackbox0kxvhzbm --db_write_buffer_size=0 --decouple_partitioned_filters=1 --default_temperature=kWarm --default_write_temperature=kCold --delete_obsolete_files_period_micros=30000000 --delpercent=4 --delrangepercent=1 --destroy_db_initially=0 --detect_filter_construct_corruption=0 --disable_file_deletions_one_in=10000 --disable_manual_compaction_one_in=10000 --disable_wal=1 --dump_malloc_stats=1 --enable_blob_files=1 --enable_blob_garbage_collection=1 --enable_checksum_handoff=0 --enable_compaction_filter=0 --enable_custom_split_merge=1 --enable_do_not_compress_roles=1 --enable_index_compression=0 --enable_memtable_insert_with_hint_prefix_extractor=0 --enable_pipelined_write=0 --enable_sst_partitioner_factory=1 --enable_thread_tracking=0 --enable_write_thread_adaptive_yield=0 --error_recovery_with_no_fault_injection=0 --exclude_wal_from_write_fault_injection=0 --expected_values_dir=/tmp/rocksdb_crashtest_expected_hhk9kcgo --fifo_allow_compaction=0 --file_checksum_impl=crc32c --file_temperature_age_thresholds= --fill_cache=0 --flush_one_in=1000 --format_version=4 --get_all_column_family_metadata_one_in=1000000 --get_current_wal_file_one_in=0 --get_live_files_apis_one_in=10000 --get_properties_of_all_tables_one_in=1000000 --get_property_one_in=1000000 --get_sorted_wal_files_one_in=0 --hard_pending_compaction_bytes_limit=2097152 --high_pri_pool_ratio=0 --index_block_restart_interval=1 --index_shortening=2 --index_type=0 --ingest_external_file_one_in=0 --ingest_wbwi_one_in=500 --initial_auto_readahead_size=16384 --inplace_update_support=0 --iterpercent=10 --key_len_percent_dist=1,30,69 --key_may_exist_one_in=100000 --last_level_temperature=kUnknown --level_compaction_dynamic_level_bytes=0 --lock_wal_one_in=0 --log_file_time_to_roll=0 --log_readahead_size=16777216 --long_running_snapshots=1 --low_pri_pool_ratio=0 --lowest_used_cache_tier=2 --manifest_preallocation_size=0 --manual_wal_flush_one_in=0 --mark_for_compaction_one_file_in=10 --max_auto_readahead_size=16384 --max_background_compactions=20 --max_bytes_for_level_base=10485760 --max_key=2500000 --max_key_len=3 --max_log_file_size=0 --max_manifest_file_size=1073741824 --max_sequential_skip_in_iterations=8 --max_total_wal_size=0 --max_write_batch_group_size_bytes=16777216 --max_write_buffer_number=3 --max_write_buffer_size_to_maintain=1048576 --memtable_avg_op_scan_flush_trigger=2 --memtable_insert_hint_per_batch=0 --memtable_max_range_deletions=100 --memtable_op_scan_flush_trigger=10 --memtable_prefix_bloom_size_ratio=0.5 --memtable_protection_bytes_per_key=8 --memtable_whole_key_filtering=0 --memtablerep=skip_list --metadata_charge_policy=1 --metadata_read_fault_one_in=32 --metadata_write_fault_one_in=128 --min_blob_size=16 --min_write_buffer_number_to_merge=2 --mmap_read=0 --mock_direct_io=False --nooverwritepercent=1 --num_bottom_pri_threads=1 --num_file_reads_for_auto_readahead=2 --open_files=-1 --open_metadata_read_fault_one_in=0 --open_metadata_write_fault_one_in=0 --open_read_fault_one_in=0 --open_write_fault_one_in=0 --ops_per_thread=100000000 --optimize_filters_for_hits=1 --optimize_filters_for_memory=0 --optimize_multiget_for_io=0 --paranoid_file_checks=1 --paranoid_memory_checks=0 --partition_filters=0 --partition_pinning=1 --pause_background_one_in=10000 --periodic_compaction_seconds=1000 --prefix_size=5 --prefixpercent=5 --prepopulate_blob_cache=1 --prepopulate_block_cache=1 --preserve_internal_time_seconds=36000 --progress_reports=0 --promote_l0_one_in=0 --read_amp_bytes_per_bit=32 --read_fault_one_in=1000 --readahead_size=0 --readpercent=45 --recycle_log_file_num=0 --remote_compaction_worker_threads=0 --reopen=0 --report_bg_io_stats=1 --reset_stats_one_in=1000000 --sample_for_compression=5 --secondary_cache_fault_one_in=0 --secondary_cache_uri=compressed_secondary_cache://capacity=8388608;enable_custom_split_merge=true --set_options_one_in=1000 --skip_stats_update_on_db_open=0 --snapshot_hold_ops=100000 --soft_pending_compaction_bytes_limit=68719476736 --sqfc_name=foo --sqfc_version=2 --sst_file_manager_bytes_per_sec=0 --sst_file_manager_bytes_per_truncate=0 --stats_dump_period_sec=10 --stats_history_buffer_size=1048576 --strict_bytes_per_sync=0 --subcompactions=2 --sync=0 --sync_fault_injection=0 --table_cache_numshardbits=0 --target_file_size_base=524288 --target_file_size_multiplier=2 --test_batches_snapshots=0 --test_cf_consistency=1 --test_ingest_standalone_range_deletion_one_in=0 --top_level_index_pinning=0 --track_and_verify_wals=0 --uncache_aggressiveness=211 --universal_max_read_amp=4 --universal_reduce_file_locking=0 --unpartitioned_pinning=0 --use_adaptive_mutex=1 --use_adaptive_mutex_lru=1 --use_attribute_group=1 --use_blob_cache=0 --use_delta_encoding=0 --use_direct_io_for_flush_and_compaction=1 --use_direct_reads=0 --use_full_merge_v1=0 --use_get_entity=0 --use_merge=0 --use_multi_cf_iterator=0 --use_multi_get_entity=0 --use_multiget=1 --use_multiscan=0 --use_put_entity_one_in=0 --use_shared_block_and_blob_cache=0 --use_sqfc_for_range_queries=1 --use_timed_put_one_in=0 --use_write_buffer_manager=0 --user_timestamp_size=0 --value_size_mult=32 --verification_only=0 --verify_checksum=1 --verify_checksum_one_in=1000 --verify_compression=0 --verify_db_one_in=10000 --verify_file_checksums_one_in=1000000 --verify_iterator_with_expected_state_one_in=0 --verify_sst_unique_id_in_manifest=1 --wal_bytes_per_sync=0 --wal_compression=none --write_buffer_size=1048576 --write_dbid_to_manifest=0 --write_fault_one_in=0 --write_identity_file=1 --writepercent=35 ``` Pull Request resolved: https://github.com/facebook/rocksdb/pull/13906 Test Plan: stress test Reviewed By: hx235 Differential Revision: D81201034 Pulled By: xingbowang fbshipit-source-id: 0bb4e0cbcdcf2de9b730492342dcfa18f07e93d6
RocksDB: A Persistent Key-Value Store for Flash and RAM Storage
RocksDB is developed and maintained by Facebook Database Engineering Team. It is built on earlier work on LevelDB by Sanjay Ghemawat (sanjay@google.com) and Jeff Dean (jeff@google.com)
This code is a library that forms the core building block for a fast key-value server, especially suited for storing data on flash drives. It has a Log-Structured-Merge-Database (LSM) design with flexible tradeoffs between Write-Amplification-Factor (WAF), Read-Amplification-Factor (RAF) and Space-Amplification-Factor (SAF). It has multi-threaded compactions, making it especially suitable for storing multiple terabytes of data in a single database.
Start with example usage here: https://github.com/facebook/rocksdb/tree/main/examples
See the github wiki for more explanation.
The public interface is in include/. Callers should not include or
rely on the details of any other header files in this package. Those
internal APIs may be changed without warning.
Questions and discussions are welcome on the RocksDB Developers Public Facebook group and email list on Google Groups.
License
RocksDB is dual-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). You may select, at your option, one of the above-listed licenses.