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Affan Dar 229e6fbe0e Adding DB::GetCurrentWalFile() API as a repliction/backup helper (#5765) 
Summary:
Adding a light weight API to get last live WAL file name and size. Meant to be used as a helper for backup/restore tooling in a larger ecosystem such as MySQL with a MyRocks storage engine.

Specifically within MySQL's backup/restore mechanism, this call can be made with a write lock on the mysql db to get a transactionally consistent snapshot of the current WAL file position along with other non-rocksdb log/data files.

Without this, the alternative would be to take the aforementioned lock, scan the WAL dir for all files, find the last file and note its exact size as the rocksdb 'checkpoint'.
Pull Request resolved: https://github.com/facebook/rocksdb/pull/5765

Differential Revision: D17172717

Pulled By: affandar

fbshipit-source-id: f2fabafd4c0e6fc45f126670c8c88a9f84cb8a37
2019-09-04 12:10:17 -07:00
..
utilities Adding DB::GetCurrentWalFile() API as a repliction/backup helper (#5765) 2019-09-04 12:10:17 -07:00
advanced_options.h Refactor trimming logic for immutable memtables (#5022) 2019-08-23 13:55:34 -07:00
c.h Refactor trimming logic for immutable memtables (#5022) 2019-08-23 13:55:34 -07:00
cache.h Move the uncompression dictionary object out of the block cache (#5584) 2019-07-23 16:01:44 -07:00
cleanable.h Support pragma once in all header files and cleanup some warnings (#4339) 2018-09-05 18:13:31 -07:00
compaction_filter.h Run automatic formatter against public header files (#5115) 2019-03-27 13:24:25 -07:00
compaction_job_stats.h Add a new CPU time counter to compaction report (#4889) 2019-01-29 17:24:00 -08:00
comparator.h The ObjectRegistry class replaces the Registrar and NewCustomObjects.… (#5293) 2019-07-23 17:13:05 -07:00
concurrent_task_limiter.h Run automatic formatter against public header files (#5115) 2019-03-27 13:24:25 -07:00
convenience.h Do readahead in VerifyChecksum() (#5713) 2019-08-16 16:42:56 -07:00
db_bench_tool.h Change RocksDB License 2017-07-15 16:11:23 -07:00
db_dump_tool.h Fix some typos in comments and docs. 2018-03-08 10:27:25 -08:00
db.h Adding DB::GetCurrentWalFile() API as a repliction/backup helper (#5765) 2019-09-04 12:10:17 -07:00
env_encryption.h Run automatic formatter against public header files (#5115) 2019-03-27 13:24:25 -07:00
env.h The ObjectRegistry class replaces the Registrar and NewCustomObjects.… (#5293) 2019-07-23 17:13:05 -07:00
experimental.h Change RocksDB License 2017-07-15 16:11:23 -07:00
filter_policy.h Remove a couple of non-public includes from public header file (#5219) 2019-04-19 11:10:33 -07:00
flush_block_policy.h Run automatic formatter against public header files (#5115) 2019-03-27 13:24:25 -07:00
iostats_context.h Add a new CPU time counter to compaction report (#4889) 2019-01-29 17:24:00 -08:00
iterator.h Revert "BaseDeltaIterator: always check valid() before accessing key(… (#4744) 2018-12-03 23:38:27 -08:00
ldb_tool.h Run automatic formatter against public header files (#5115) 2019-03-27 13:24:25 -07:00
listener.h Add copyright headers per FB open-source checkup tool. (#5199) 2019-04-18 10:55:01 -07:00
memory_allocator.h JemallocNodumpAllocator: option to limit tcache memory usage (#4736) 2018-11-29 17:33:40 -08:00
memtablerep.h Run automatic formatter against public header files (#5115) 2019-03-27 13:24:25 -07:00
merge_operator.h The ObjectRegistry class replaces the Registrar and NewCustomObjects.… (#5293) 2019-07-23 17:13:05 -07:00
metadata.h Export Import sst files (#5495) 2019-07-17 12:27:14 -07:00
options.h Persistent globally unique DB ID in manifest (#5725) 2019-09-03 08:52:24 -07:00
perf_context.h Run automatic formatter against public header files (#5115) 2019-03-27 13:24:25 -07:00
perf_level.h Introduce a CPU time counter in perf_context (#4741) 2018-12-20 12:03:44 -08:00
persistent_cache.h Change RocksDB License 2017-07-15 16:11:23 -07:00
rate_limiter.h Fix typos in comments (#4819) 2018-12-26 09:43:56 -08:00
slice_transform.h Run automatic formatter against public header files (#5115) 2019-03-27 13:24:25 -07:00
slice.h Run automatic formatter against public header files (#5115) 2019-03-27 13:24:25 -07:00
snapshot.h Change RocksDB License 2017-07-15 16:11:23 -07:00
sst_dump_tool.h tools: use provided options instead of the default (#4839) 2019-01-03 11:23:49 -08:00
sst_file_manager.h Smooth the deletion of WAL files (#5116) 2019-03-28 15:17:13 -07:00
sst_file_reader.h Do readahead in VerifyChecksum() (#5713) 2019-08-16 16:42:56 -07:00
sst_file_writer.h Run automatic formatter against public header files (#5115) 2019-03-27 13:24:25 -07:00
statistics.h WritePrepared: fix Get without snapshot (#5664) 2019-08-05 13:41:21 -07:00
stats_history.h Persistent Stats: persist stats history to disk (#5046) 2019-06-17 15:21:50 -07:00
status.h New API to get all merge operands for a Key (#5604) 2019-08-06 14:26:44 -07:00
table_properties.h Add copyright headers per FB open-source checkup tool. (#5199) 2019-04-18 10:55:01 -07:00
table.h LRU Cache to enable mid-point insertion by default (#5508) 2019-06-27 10:20:57 -07:00
thread_status.h Run automatic formatter against public header files (#5115) 2019-03-27 13:24:25 -07:00
threadpool.h Run automatic formatter against public header files (#5115) 2019-03-27 13:24:25 -07:00
trace_reader_writer.h Add the max trace file size limitation option to Tracing (#4610) 2018-11-27 14:27:05 -08:00
transaction_log.h Run automatic formatter against public header files (#5115) 2019-03-27 13:24:25 -07:00
types.h WriteUnPrepared: less virtual in iterator callback (#5049) 2019-04-02 14:47:16 -07:00
universal_compaction.h Run automatic formatter against public header files (#5115) 2019-03-27 13:24:25 -07:00
version.h Update history and version for 6.4.0 (#5652) 2019-07-30 16:10:06 -07:00
wal_filter.h Run automatic formatter against public header files (#5115) 2019-03-27 13:24:25 -07:00
write_batch_base.h Fix WriteBatchBase::DeleteRange API comment (#4935) 2019-01-31 14:43:40 -08:00
write_batch.h WriteUnPrepared: savepoint support (#5627) 2019-07-31 13:39:39 -07:00
write_buffer_manager.h WriteBufferManger doens't cost to cache if no limit is set (#4695) 2018-11-18 16:55:43 -08:00