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Don't write to WAL after previous WAL write error (facebook#12448)
Summary: **Context/Summary:** WAL write can continue onto the the WAL file that has encountered error and thus crash at https://github.com/facebook/rocksdb/blob/3f5bd46a07843e2117deb373008e63c38a393648/file/writable_file_writer.cc#L67 in below scenario: <img width="698" alt="Screenshot 2024-03-15 at 1 52 45 PM" src="https://github.com/facebook/rocksdb/assets/83968999/cd631ef2-c87c-4926-91ab-a0dc10f1eb14"> Note that GetLiveFilesStorageInfo() can happen concurrently with PUT() for the non-WAL-write part where db lock isn't held This PR added an error check in LogWriter layer to prevent thread 2 from starting to write WAL after thread 1's write error. Pull Request resolved: facebook#12448 Test Plan: Step 1 Apply the patch below to simulate frequent WAL write error for the purpose of repro ``` diff --git a/db_stress_tool/db_stress_driver.cc b/db_stress_tool/db_stress_driver.cc index b47fa89e6..31930e976 100644 --- a/db_stress_tool/db_stress_driver.cc +++ b/db_stress_tool/db_stress_driver.cc @@ -98,7 +98,7 @@ bool RunStressTestImpl(SharedState* shared) { // MANIFEST, CURRENT, and WAL files. fault_fs_guard->SetRandomWriteError( shared->GetSeed(), FLAGS_write_fault_one_in, error_msg, - /*inject_for_all_file_types=*/false, {FileType::kTableFile}); + /*inject_for_all_file_types=*/false, {FileType::kWalFile}); fault_fs_guard->SetFilesystemDirectWritable(false); fault_fs_guard->EnableWriteErrorInjection(); } diff --git a/utilities/fault_injection_fs.cc b/utilities/fault_injection_fs.cc index 0ffb43ea6..589912cf4 100644 --- a/utilities/fault_injection_fs.cc +++ b/utilities/fault_injection_fs.cc @@ -1042,7 +1042,7 @@ IOStatus FaultInjectionTestFS::InjectWriteError(const std::string& file_name) { } if (allowed_type) { - if (write_error_rand_.OneIn(write_error_one_in_)) { + if (write_error_rand_.OneIn(1)) { return GetError(); } } ``` Step 2 Run below ``` ./db_stress --WAL_size_limit_MB=1 --WAL_ttl_seconds=60 --acquire_snapshot_one_in=100 --adaptive_readahead=1 --advise_random_on_open=1 --allow_concurrent_memtable_write=1 --allow_data_in_errors=True --allow_fallocate=1 --async_io=1 --auto_readahead_size=0 --avoid_flush_during_recovery=0 --avoid_flush_during_shutdown=0 --avoid_unnecessary_blocking_io=0 --backup_max_size=104857600 --backup_one_in=1000 --batch_protection_bytes_per_key=8 --bgerror_resume_retry_interval=1000000 --block_protection_bytes_per_key=8 --block_size=16384 --bloom_before_level=2147483646 --bloom_bits=41.19540459544058 --bottommost_compression_type=disable --bottommost_file_compaction_delay=3600 --bytes_per_sync=0 --cache_index_and_filter_blocks=1 --cache_index_and_filter_blocks_with_high_priority=1 --cache_size=33554432 --cache_type=fixed_hyper_clock_cache --charge_compression_dictionary_building_buffer=0 --charge_file_metadata=0 --charge_filter_construction=0 --charge_table_reader=1 --checkpoint_one_in=1000000 --checksum_type=kCRC32c --clear_column_family_one_in=0 --column_families=1 --compact_files_one_in=1000000 --compact_range_one_in=1000 --compaction_pri=0 --compaction_readahead_size=1048576 --compaction_ttl=0 --compress_format_version=1 --compressed_secondary_cache_size=8388608 --compression_checksum=1 --compression_max_dict_buffer_bytes=68719476735 --compression_max_dict_bytes=16384 --compression_parallel_threads=1 --compression_type=zlib --compression_use_zstd_dict_trainer=0 --compression_zstd_max_train_bytes=0 --continuous_verification_interval=0 --data_block_index_type=0 --db=/dev/shm/rocksdb_test/rocksdb_crashtest_whitebox --db_write_buffer_size=1048576 --delete_obsolete_files_period_micros=30000000 --delpercent=4 --delrangepercent=1 --destroy_db_initially=0 --detect_filter_construct_corruption=1 --disable_wal=0 --dump_malloc_stats=0 --enable_checksum_handoff=1 --enable_compaction_filter=0 --enable_index_compression=1 --enable_pipelined_write=1 --enable_thread_tracking=1 --enable_write_thread_adaptive_yield=0 --expected_values_dir=/dev/shm/rocksdb_test/rocksdb_crashtest_expected --fail_if_options_file_error=0 --fifo_allow_compaction=1 --file_checksum_impl=big --fill_cache=1 --flush_one_in=1000 --format_version=6 --get_current_wal_file_one_in=0 --get_live_files_one_in=10000 --get_property_one_in=100000 --get_sorted_wal_files_one_in=0 --hard_pending_compaction_bytes_limit=274877906944 --high_pri_pool_ratio=0.5 --index_block_restart_interval=15 --index_shortening=2 --index_type=0 --ingest_external_file_one_in=0 --initial_auto_readahead_size=524288 --iterpercent=10 --key_len_percent_dist=1,30,69 --kill_random_test=888887 --level_compaction_dynamic_level_bytes=1 --lock_wal_one_in=10000 --log2_keys_per_lock=10 --log_file_time_to_roll=0 --log_readahead_size=16777216 --long_running_snapshots=0 --low_pri_pool_ratio=0.5 --manifest_preallocation_size=5120 --manual_wal_flush_one_in=1000 --mark_for_compaction_one_file_in=0 --max_auto_readahead_size=524288 --max_background_compactions=1 --max_bytes_for_level_base=67108864 --max_key=100000 --max_key_len=3 --max_log_file_size=1048576 --max_manifest_file_size=1073741824 --max_total_wal_size=0 --max_write_batch_group_size_bytes=64 --max_write_buffer_number=10 --max_write_buffer_size_to_maintain=1048576 --memtable_insert_hint_per_batch=1 --memtable_max_range_deletions=0 --memtable_prefix_bloom_size_ratio=0.5 --memtable_protection_bytes_per_key=8 --memtable_whole_key_filtering=0 --memtablerep=skip_list --metadata_charge_policy=0 --min_write_buffer_number_to_merge=2 --mmap_read=0 --mock_direct_io=True --nooverwritepercent=1 --num_file_reads_for_auto_readahead=2 --open_files=500000 --open_metadata_write_fault_one_in=8 --open_read_fault_one_in=32 --open_write_fault_one_in=0 --ops_per_thread=20000000 --optimize_filters_for_hits=1 --optimize_filters_for_memory=1 --optimize_multiget_for_io=0 --paranoid_file_checks=1 --partition_filters=0 --partition_pinning=3 --pause_background_one_in=10000 --periodic_compaction_seconds=0 --prefix_size=5 --prefixpercent=5 --prepopulate_block_cache=0 --preserve_internal_time_seconds=3600 --progress_reports=0 --read_amp_bytes_per_bit=0 --read_fault_one_in=1000 --readahead_size=16384 --readpercent=45 --recycle_log_file_num=0 --reopen=20 --report_bg_io_stats=0 --sample_for_compression=5 --secondary_cache_fault_one_in=32 --secondary_cache_uri= --skip_stats_update_on_db_open=1 --snapshot_hold_ops=100000 --soft_pending_compaction_bytes_limit=68719476736 --sst_file_manager_bytes_per_sec=0 --sst_file_manager_bytes_per_truncate=0 --stats_dump_period_sec=600 --stats_history_buffer_size=0 --strict_bytes_per_sync=0 --subcompactions=4 --sync=0 --sync_fault_injection=1 --table_cache_numshardbits=-1 --target_file_size_base=16777216 --target_file_size_multiplier=1 --test_batches_snapshots=0 --top_level_index_pinning=1 --unpartitioned_pinning=1 --use_adaptive_mutex=1 --use_adaptive_mutex_lru=1 --use_delta_encoding=1 --use_direct_io_for_flush_and_compaction=1 --use_direct_reads=1 --use_full_merge_v1=0 --use_get_entity=0 --use_merge=1 --use_multi_get_entity=0 --use_multiget=0 --use_put_entity_one_in=1 --use_write_buffer_manager=1 --user_timestamp_size=0 --value_size_mult=32 --verification_only=0 --verify_checksum=1 --verify_checksum_one_in=1000000 --verify_compression=1 --verify_db_one_in=100000 --verify_file_checksums_one_in=1000000 --verify_iterator_with_expected_state_one_in=5 --verify_sst_unique_id_in_manifest=1 --wal_bytes_per_sync=0 --wal_compression=none --write_buffer_size=33554432 --write_dbid_to_manifest=1 --write_fault_one_in=1000 --writepercent=35 ``` Pre-PR: ``` db_stress: ./file/writable_file_writer.h:309: rocksdb::IOStatus rocksdb::WritableFileWriter::AssertFalseAndGetStatusForPrevError(): Assertion `sync_without_flush_called_' failed. ``` Post-PR ``` 2024/03/15-13:44:08 Starting database operations put or merge error: IO error: Retryable injected write error ``` Note: The patch is NOT included in the PR as we first need to figure out how to handle this type of failed write in stress test (planned for the near future). It's sufficient to show the stress test does not crash as pre-PR for the purpose of this PR. Reviewed By: ajkr Differential Revision: D54969287 Pulled By: hx235 fbshipit-source-id: 0ba4eabfec44ea7656d4d7117836f388897562f2
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