diff --git a/tests/data/wpd19_10000.rocksdb/LOG b/tests/data/wpd19_10000.rocksdb/LOG
deleted file mode 100644
index c4e921e..0000000
--- a/tests/data/wpd19_10000.rocksdb/LOG
+++ /dev/null
@@ -1,186 +0,0 @@
-2021/03/14-09:02:42.575559 7f559c0c3a80 RocksDB version: 5.11.3
-2021/03/14-09:02:42.575613 7f559c0c3a80 Git sha rocksdb_build_git_sha:dbd8fa09b823826dd2a30bc119dad7a6fa9a4c6d
-2021/03/14-09:02:42.575615 7f559c0c3a80 Compile date Mar 13 2021
-2021/03/14-09:02:42.575619 7f559c0c3a80 DB SUMMARY
-2021/03/14-09:02:42.575808 7f559c0c3a80 CURRENT file:  CURRENT
-2021/03/14-09:02:42.575810 7f559c0c3a80 IDENTITY file:  IDENTITY
-2021/03/14-09:02:42.575828 7f559c0c3a80 MANIFEST file:  MANIFEST-000001 size: 13 Bytes
-2021/03/14-09:02:42.575829 7f559c0c3a80 SST files in tests/data/wpd19_10000.rocksdb dir, Total Num: 0, files: 
-2021/03/14-09:02:42.575830 7f559c0c3a80 Write Ahead Log file in tests/data/wpd19_10000.rocksdb: 000003.log size: 16248008 ; 
-2021/03/14-09:02:42.575837 7f559c0c3a80                         Options.error_if_exists: 0
-2021/03/14-09:02:42.575837 7f559c0c3a80                       Options.create_if_missing: 1
-2021/03/14-09:02:42.575838 7f559c0c3a80                         Options.paranoid_checks: 1
-2021/03/14-09:02:42.575839 7f559c0c3a80                                     Options.env: 0x7f559ca7d080
-2021/03/14-09:02:42.575839 7f559c0c3a80                                Options.info_log: 0x20a6c90
-2021/03/14-09:02:42.575840 7f559c0c3a80                Options.max_file_opening_threads: 16
-2021/03/14-09:02:42.575840 7f559c0c3a80                              Options.statistics: (nil)
-2021/03/14-09:02:42.575841 7f559c0c3a80                               Options.use_fsync: 0
-2021/03/14-09:02:42.575842 7f559c0c3a80                       Options.max_log_file_size: 0
-2021/03/14-09:02:42.575842 7f559c0c3a80                  Options.max_manifest_file_size: 18446744073709551615
-2021/03/14-09:02:42.575843 7f559c0c3a80                   Options.log_file_time_to_roll: 0
-2021/03/14-09:02:42.575843 7f559c0c3a80                       Options.keep_log_file_num: 1000
-2021/03/14-09:02:42.575844 7f559c0c3a80                    Options.recycle_log_file_num: 0
-2021/03/14-09:02:42.575845 7f559c0c3a80                         Options.allow_fallocate: 1
-2021/03/14-09:02:42.575845 7f559c0c3a80                        Options.allow_mmap_reads: 0
-2021/03/14-09:02:42.575846 7f559c0c3a80                       Options.allow_mmap_writes: 0
-2021/03/14-09:02:42.575846 7f559c0c3a80                        Options.use_direct_reads: 0
-2021/03/14-09:02:42.575847 7f559c0c3a80                        Options.use_direct_io_for_flush_and_compaction: 0
-2021/03/14-09:02:42.575847 7f559c0c3a80          Options.create_missing_column_families: 0
-2021/03/14-09:02:42.575848 7f559c0c3a80                              Options.db_log_dir: 
-2021/03/14-09:02:42.575849 7f559c0c3a80                                 Options.wal_dir: tests/data/wpd19_10000.rocksdb
-2021/03/14-09:02:42.575849 7f559c0c3a80                Options.table_cache_numshardbits: 6
-2021/03/14-09:02:42.575850 7f559c0c3a80                      Options.max_subcompactions: 1
-2021/03/14-09:02:42.575850 7f559c0c3a80                  Options.max_background_flushes: -1
-2021/03/14-09:02:42.575851 7f559c0c3a80                         Options.WAL_ttl_seconds: 0
-2021/03/14-09:02:42.575852 7f559c0c3a80                       Options.WAL_size_limit_MB: 0
-2021/03/14-09:02:42.575852 7f559c0c3a80             Options.manifest_preallocation_size: 4194304
-2021/03/14-09:02:42.575853 7f559c0c3a80                     Options.is_fd_close_on_exec: 1
-2021/03/14-09:02:42.575853 7f559c0c3a80                   Options.advise_random_on_open: 1
-2021/03/14-09:02:42.575854 7f559c0c3a80                    Options.db_write_buffer_size: 0
-2021/03/14-09:02:42.575854 7f559c0c3a80                    Options.write_buffer_manager: 0x208eb90
-2021/03/14-09:02:42.575855 7f559c0c3a80         Options.access_hint_on_compaction_start: 1
-2021/03/14-09:02:42.575856 7f559c0c3a80  Options.new_table_reader_for_compaction_inputs: 0
-2021/03/14-09:02:42.575856 7f559c0c3a80           Options.random_access_max_buffer_size: 1048576
-2021/03/14-09:02:42.575857 7f559c0c3a80                      Options.use_adaptive_mutex: 0
-2021/03/14-09:02:42.575857 7f559c0c3a80                            Options.rate_limiter: (nil)
-2021/03/14-09:02:42.575859 7f559c0c3a80     Options.sst_file_manager.rate_bytes_per_sec: 0
-2021/03/14-09:02:42.575866 7f559c0c3a80                       Options.wal_recovery_mode: 2
-2021/03/14-09:02:42.575867 7f559c0c3a80                  Options.enable_thread_tracking: 0
-2021/03/14-09:02:42.575868 7f559c0c3a80                  Options.enable_pipelined_write: 0
-2021/03/14-09:02:42.575868 7f559c0c3a80         Options.allow_concurrent_memtable_write: 1
-2021/03/14-09:02:42.575869 7f559c0c3a80      Options.enable_write_thread_adaptive_yield: 1
-2021/03/14-09:02:42.575869 7f559c0c3a80             Options.write_thread_max_yield_usec: 100
-2021/03/14-09:02:42.575870 7f559c0c3a80            Options.write_thread_slow_yield_usec: 3
-2021/03/14-09:02:42.575871 7f559c0c3a80                               Options.row_cache: None
-2021/03/14-09:02:42.575871 7f559c0c3a80                              Options.wal_filter: None
-2021/03/14-09:02:42.575872 7f559c0c3a80             Options.avoid_flush_during_recovery: 0
-2021/03/14-09:02:42.575872 7f559c0c3a80             Options.allow_ingest_behind: 0
-2021/03/14-09:02:42.575873 7f559c0c3a80             Options.preserve_deletes: 0
-2021/03/14-09:02:42.575873 7f559c0c3a80             Options.two_write_queues: 0
-2021/03/14-09:02:42.575874 7f559c0c3a80             Options.manual_wal_flush: 0
-2021/03/14-09:02:42.575875 7f559c0c3a80             Options.max_background_jobs: 16
-2021/03/14-09:02:42.575876 7f559c0c3a80             Options.max_background_compactions: -1
-2021/03/14-09:02:42.575876 7f559c0c3a80             Options.avoid_flush_during_shutdown: 0
-2021/03/14-09:02:42.575877 7f559c0c3a80           Options.writable_file_max_buffer_size: 1048576
-2021/03/14-09:02:42.575877 7f559c0c3a80             Options.delayed_write_rate : 16777216
-2021/03/14-09:02:42.575878 7f559c0c3a80             Options.max_total_wal_size: 0
-2021/03/14-09:02:42.575879 7f559c0c3a80             Options.delete_obsolete_files_period_micros: 21600000000
-2021/03/14-09:02:42.575879 7f559c0c3a80                   Options.stats_dump_period_sec: 600
-2021/03/14-09:02:42.575880 7f559c0c3a80                          Options.max_open_files: -1
-2021/03/14-09:02:42.575880 7f559c0c3a80                          Options.bytes_per_sync: 0
-2021/03/14-09:02:42.575881 7f559c0c3a80                      Options.wal_bytes_per_sync: 0
-2021/03/14-09:02:42.575882 7f559c0c3a80       Options.compaction_readahead_size: 0
-2021/03/14-09:02:42.575882 7f559c0c3a80 Compression algorithms supported:
-2021/03/14-09:02:42.575883 7f559c0c3a80 	Snappy supported: 1
-2021/03/14-09:02:42.575883 7f559c0c3a80 	Zlib supported: 1
-2021/03/14-09:02:42.575884 7f559c0c3a80 	Bzip supported: 1
-2021/03/14-09:02:42.575884 7f559c0c3a80 	LZ4 supported: 1
-2021/03/14-09:02:42.575885 7f559c0c3a80 	ZSTDNotFinal supported: 1
-2021/03/14-09:02:42.575889 7f559c0c3a80 	ZSTD supported: 1
-2021/03/14-09:02:42.575892 7f559c0c3a80 Fast CRC32 supported: Supported on x86
-2021/03/14-09:02:42.575893 7f559c0c3a80 [db/db_impl_readonly.cc:22] Opening the db in read only mode
-2021/03/14-09:02:42.575985 7f559c0c3a80 [db/version_set.cc:2833] Recovering from manifest file: MANIFEST-000001
-2021/03/14-09:02:42.576038 7f559c0c3a80 [db/column_family.cc:429] --------------- Options for column family [default]:
-2021/03/14-09:02:42.576039 7f559c0c3a80               Options.comparator: leveldb.BytewiseComparator
-2021/03/14-09:02:42.576040 7f559c0c3a80           Options.merge_operator: UInt64AddOperator
-2021/03/14-09:02:42.576041 7f559c0c3a80        Options.compaction_filter: None
-2021/03/14-09:02:42.576041 7f559c0c3a80        Options.compaction_filter_factory: None
-2021/03/14-09:02:42.576042 7f559c0c3a80         Options.memtable_factory: SkipListFactory
-2021/03/14-09:02:42.576043 7f559c0c3a80            Options.table_factory: BlockBasedTable
-2021/03/14-09:02:42.576059 7f559c0c3a80            table_factory options:   flush_block_policy_factory: FlushBlockBySizePolicyFactory (0x209e520)
-  cache_index_and_filter_blocks: 0
-  cache_index_and_filter_blocks_with_high_priority: 0
-  pin_l0_filter_and_index_blocks_in_cache: 0
-  index_type: 0
-  hash_index_allow_collision: 1
-  checksum: 1
-  no_block_cache: 0
-  block_cache: 0x2083c20
-  block_cache_name: LRUCache
-  block_cache_options:
-    capacity : 8388608
-    num_shard_bits : 4
-    strict_capacity_limit : 0
-    high_pri_pool_ratio: 0.000
-  block_cache_compressed: (nil)
-  persistent_cache: (nil)
-  block_size: 4096
-  block_size_deviation: 10
-  block_restart_interval: 16
-  index_block_restart_interval: 1
-  metadata_block_size: 4096
-  partition_filters: 0
-  use_delta_encoding: 1
-  filter_policy: nullptr
-  whole_key_filtering: 1
-  verify_compression: 0
-  read_amp_bytes_per_bit: 0
-  format_version: 2
-2021/03/14-09:02:42.576065 7f559c0c3a80        Options.write_buffer_size: 134217728
-2021/03/14-09:02:42.576065 7f559c0c3a80  Options.max_write_buffer_number: 6
-2021/03/14-09:02:42.576066 7f559c0c3a80        Options.compression[0]: NoCompression
-2021/03/14-09:02:42.576067 7f559c0c3a80        Options.compression[1]: NoCompression
-2021/03/14-09:02:42.576068 7f559c0c3a80        Options.compression[2]: Snappy
-2021/03/14-09:02:42.576068 7f559c0c3a80        Options.compression[3]: Snappy
-2021/03/14-09:02:42.576069 7f559c0c3a80        Options.compression[4]: Snappy
-2021/03/14-09:02:42.576069 7f559c0c3a80        Options.compression[5]: Snappy
-2021/03/14-09:02:42.576070 7f559c0c3a80        Options.compression[6]: Snappy
-2021/03/14-09:02:42.576070 7f559c0c3a80                  Options.bottommost_compression: Disabled
-2021/03/14-09:02:42.576071 7f559c0c3a80       Options.prefix_extractor: rocksdb.FixedPrefix.3
-2021/03/14-09:02:42.576072 7f559c0c3a80   Options.memtable_insert_with_hint_prefix_extractor: nullptr
-2021/03/14-09:02:42.576072 7f559c0c3a80             Options.num_levels: 7
-2021/03/14-09:02:42.576073 7f559c0c3a80        Options.min_write_buffer_number_to_merge: 2
-2021/03/14-09:02:42.576074 7f559c0c3a80     Options.max_write_buffer_number_to_maintain: 0
-2021/03/14-09:02:42.576074 7f559c0c3a80            Options.compression_opts.window_bits: -14
-2021/03/14-09:02:42.576075 7f559c0c3a80                  Options.compression_opts.level: -1
-2021/03/14-09:02:42.576075 7f559c0c3a80               Options.compression_opts.strategy: 0
-2021/03/14-09:02:42.576076 7f559c0c3a80         Options.compression_opts.max_dict_bytes: 0
-2021/03/14-09:02:42.576076 7f559c0c3a80      Options.level0_file_num_compaction_trigger: 2
-2021/03/14-09:02:42.576077 7f559c0c3a80          Options.level0_slowdown_writes_trigger: 20
-2021/03/14-09:02:42.576078 7f559c0c3a80              Options.level0_stop_writes_trigger: 36
-2021/03/14-09:02:42.576078 7f559c0c3a80                   Options.target_file_size_base: 67108864
-2021/03/14-09:02:42.576079 7f559c0c3a80             Options.target_file_size_multiplier: 1
-2021/03/14-09:02:42.576079 7f559c0c3a80                Options.max_bytes_for_level_base: 536870912
-2021/03/14-09:02:42.576080 7f559c0c3a80 Options.level_compaction_dynamic_level_bytes: 0
-2021/03/14-09:02:42.576080 7f559c0c3a80          Options.max_bytes_for_level_multiplier: 10.000000
-2021/03/14-09:02:42.576082 7f559c0c3a80 Options.max_bytes_for_level_multiplier_addtl[0]: 1
-2021/03/14-09:02:42.576090 7f559c0c3a80 Options.max_bytes_for_level_multiplier_addtl[1]: 1
-2021/03/14-09:02:42.576091 7f559c0c3a80 Options.max_bytes_for_level_multiplier_addtl[2]: 1
-2021/03/14-09:02:42.576091 7f559c0c3a80 Options.max_bytes_for_level_multiplier_addtl[3]: 1
-2021/03/14-09:02:42.576092 7f559c0c3a80 Options.max_bytes_for_level_multiplier_addtl[4]: 1
-2021/03/14-09:02:42.576092 7f559c0c3a80 Options.max_bytes_for_level_multiplier_addtl[5]: 1
-2021/03/14-09:02:42.576093 7f559c0c3a80 Options.max_bytes_for_level_multiplier_addtl[6]: 1
-2021/03/14-09:02:42.576093 7f559c0c3a80       Options.max_sequential_skip_in_iterations: 8
-2021/03/14-09:02:42.576094 7f559c0c3a80                    Options.max_compaction_bytes: 1677721600
-2021/03/14-09:02:42.576095 7f559c0c3a80                        Options.arena_block_size: 16777216
-2021/03/14-09:02:42.576095 7f559c0c3a80   Options.soft_pending_compaction_bytes_limit: 68719476736
-2021/03/14-09:02:42.576096 7f559c0c3a80   Options.hard_pending_compaction_bytes_limit: 274877906944
-2021/03/14-09:02:42.576096 7f559c0c3a80       Options.rate_limit_delay_max_milliseconds: 100
-2021/03/14-09:02:42.576097 7f559c0c3a80                Options.disable_auto_compactions: 0
-2021/03/14-09:02:42.576099 7f559c0c3a80                        Options.compaction_style: kCompactionStyleLevel
-2021/03/14-09:02:42.576099 7f559c0c3a80                          Options.compaction_pri: kByCompensatedSize
-2021/03/14-09:02:42.576100 7f559c0c3a80 Options.compaction_options_universal.size_ratio: 1
-2021/03/14-09:02:42.576101 7f559c0c3a80 Options.compaction_options_universal.min_merge_width: 2
-2021/03/14-09:02:42.576101 7f559c0c3a80 Options.compaction_options_universal.max_merge_width: 4294967295
-2021/03/14-09:02:42.576102 7f559c0c3a80 Options.compaction_options_universal.max_size_amplification_percent: 200
-2021/03/14-09:02:42.576102 7f559c0c3a80 Options.compaction_options_universal.compression_size_percent: -1
-2021/03/14-09:02:42.576103 7f559c0c3a80 Options.compaction_options_universal.stop_style: kCompactionStopStyleTotalSize
-2021/03/14-09:02:42.576104 7f559c0c3a80 Options.compaction_options_fifo.max_table_files_size: 1073741824
-2021/03/14-09:02:42.576105 7f559c0c3a80 Options.compaction_options_fifo.allow_compaction: 0
-2021/03/14-09:02:42.576105 7f559c0c3a80 Options.compaction_options_fifo.ttl: 0
-2021/03/14-09:02:42.576106 7f559c0c3a80                   Options.table_properties_collectors: 
-2021/03/14-09:02:42.576106 7f559c0c3a80                   Options.inplace_update_support: 0
-2021/03/14-09:02:42.576107 7f559c0c3a80                 Options.inplace_update_num_locks: 10000
-2021/03/14-09:02:42.576107 7f559c0c3a80               Options.memtable_prefix_bloom_size_ratio: 0.000000
-2021/03/14-09:02:42.576108 7f559c0c3a80   Options.memtable_huge_page_size: 0
-2021/03/14-09:02:42.576109 7f559c0c3a80                           Options.bloom_locality: 0
-2021/03/14-09:02:42.576109 7f559c0c3a80                    Options.max_successive_merges: 0
-2021/03/14-09:02:42.576110 7f559c0c3a80                Options.optimize_filters_for_hits: 0
-2021/03/14-09:02:42.576110 7f559c0c3a80                Options.paranoid_file_checks: 0
-2021/03/14-09:02:42.576111 7f559c0c3a80                Options.force_consistency_checks: 0
-2021/03/14-09:02:42.576112 7f559c0c3a80                Options.report_bg_io_stats: 0
-2021/03/14-09:02:42.576482 7f559c0c3a80 [db/version_set.cc:3090] Recovered from manifest file:tests/data/wpd19_10000.rocksdb/MANIFEST-000001 succeeded,manifest_file_number is 1, next_file_number is 3, last_sequence is 0, log_number is 0,prev_log_number is 0,max_column_family is 0
-2021/03/14-09:02:42.576484 7f559c0c3a80 [db/version_set.cc:3106] Column family [default] (ID 0), log number is 0
-2021/03/14-09:02:42.576661 7f559c0c3a80 EVENT_LOG_v1 {"time_micros": 1615708962576650, "job": 1, "event": "recovery_started", "log_files": [3]}
-2021/03/14-09:02:42.576666 7f559c0c3a80 [db/db_impl_open.cc:516] Recovering log #3 mode 2
-2021/03/14-09:02:43.279911 7f559c0c3a80 EVENT_LOG_v1 {"time_micros": 1615708963279908, "job": 1, "event": "recovery_finished"}