fork of https://github.com/oxigraph/rocksdb and https://github.com/facebook/rocksdb for nextgraph and oxigraph

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Yanqin Jin 340ed4fac7 Add support for timestamp in Get/Put (#5079) ... Summary: It's useful to be able to (optionally) associate key-value pairs with user-provided timestamps. This PR is an early effort towards this goal and continues the work of facebook#4942. A suite of new unit tests exist in DBBasicTestWithTimestampWithParam. Support for timestamp requires the user to provide timestamp as a slice in `ReadOptions` and `WriteOptions`. All timestamps of the same database must share the same length, format, etc. The format of the timestamp is the same throughout the same database, and the user is responsible for providing a comparator function (Comparator) to order the <key, timestamp> tuples. Once created, the format and length of the timestamp cannot change (at least for now). Test plan (on devserver): ``` $COMPILE_WITH_ASAN=1 make -j32 all $./db_basic_test --gtest_filter=Timestamp/DBBasicTestWithTimestampWithParam.PutAndGet/* $make check ``` All tests must pass. We also run the following db_bench tests to verify whether there is regression on Get/Put while timestamp is not enabled. ``` $TEST_TMPDIR=/dev/shm ./db_bench -benchmarks=fillseq,readrandom -num=1000000 $TEST_TMPDIR=/dev/shm ./db_bench -benchmarks=fillrandom -num=1000000 ``` Repeat for 6 times for both versions. Results are as follows: ``` | | readrandom | fillrandom | | master | 16.77 MB/s | 47.05 MB/s | | PR5079 | 16.44 MB/s | 47.03 MB/s | ``` Pull Request resolved: https://github.com/facebook/rocksdb/pull/5079 Differential Revision: D15132946 Pulled By: riversand963 fbshipit-source-id: 833a0d657eac21182f0f206c910a6438154c742c		6 years ago
..
utilities	WritePrepared: skip_concurrency_control option (#5330)	6 years ago
advanced_options.h	Use creation_time or mtime when file_creation_time=0 (#5184)	6 years ago
c.h	Unordered Writes (#5218)	6 years ago
cache.h	Make adaptivity of LRU cache mutexes configurable (#5054)	6 years ago
cleanable.h	Support pragma once in all header files and cleanup some warnings (#4339)	6 years ago
compaction_filter.h	Run automatic formatter against public header files (#5115)	6 years ago
compaction_job_stats.h	Add a new CPU time counter to compaction report (#4889)	6 years ago
comparator.h	Add support for timestamp in Get/Put (#5079)	6 years ago
concurrent_task_limiter.h	Run automatic formatter against public header files (#5115)	6 years ago
convenience.h	Run automatic formatter against public header files (#5115)	6 years ago
db.h	Improve comments for StatsHistoryIterator and InMemoryStatsHistoryIterator	6 years ago
db_bench_tool.h	Change RocksDB License	8 years ago
db_dump_tool.h	Fix some typos in comments and docs.	7 years ago
env.h	Fix tsan error (#5414)	6 years ago
env_encryption.h	Run automatic formatter against public header files (#5115)	6 years ago
experimental.h	Change RocksDB License	8 years ago
filter_policy.h	Remove a couple of non-public includes from public header file (#5219)	6 years ago
flush_block_policy.h	Run automatic formatter against public header files (#5115)	6 years ago
iostats_context.h	Add a new CPU time counter to compaction report (#4889)	6 years ago
iterator.h	Revert "BaseDeltaIterator: always check valid() before accessing key(… (#4744)	6 years ago
ldb_tool.h	Run automatic formatter against public header files (#5115)	6 years ago
listener.h	Add copyright headers per FB open-source checkup tool. (#5199)	6 years ago
memory_allocator.h	JemallocNodumpAllocator: option to limit tcache memory usage (#4736)	6 years ago
memtablerep.h	Run automatic formatter against public header files (#5115)	6 years ago
merge_operator.h	Run automatic formatter against public header files (#5115)	6 years ago
metadata.h	Run automatic formatter against public header files (#5115)	6 years ago
options.h	Add support for timestamp in Get/Put (#5079)	6 years ago
perf_context.h	Run automatic formatter against public header files (#5115)	6 years ago
perf_level.h	Introduce a CPU time counter in perf_context (#4741)	6 years ago
persistent_cache.h	Change RocksDB License	8 years ago
rate_limiter.h	Fix typos in comments (#4819)	6 years ago
slice.h	Run automatic formatter against public header files (#5115)	6 years ago
slice_transform.h	Run automatic formatter against public header files (#5115)	6 years ago
snapshot.h	Change RocksDB License	8 years ago
sst_dump_tool.h	tools: use provided options instead of the default (#4839)	6 years ago
sst_file_manager.h	Smooth the deletion of WAL files (#5116)	6 years ago
sst_file_reader.h	Get `CompactionJobInfo` from CompactFiles	6 years ago
sst_file_writer.h	Run automatic formatter against public header files (#5115)	6 years ago
statistics.h	improve comments for statistics.h	6 years ago
stats_history.h	Improve comments for StatsHistoryIterator and InMemoryStatsHistoryIterator	6 years ago
status.h	Use separate status code for column family drop and db shutdown in progress (#5275)	6 years ago
table.h	Add BlockBasedTableOptions::index_shortening (#5174)	6 years ago
table_properties.h	Add copyright headers per FB open-source checkup tool. (#5199)	6 years ago
thread_status.h	Run automatic formatter against public header files (#5115)	6 years ago
threadpool.h	Run automatic formatter against public header files (#5115)	6 years ago
trace_reader_writer.h	Add the max trace file size limitation option to Tracing (#4610)	6 years ago
transaction_log.h	Run automatic formatter against public header files (#5115)	6 years ago
types.h	WriteUnPrepared: less virtual in iterator callback (#5049)	6 years ago
universal_compaction.h	Run automatic formatter against public header files (#5115)	6 years ago
version.h	Update history and version for future 6.2.0 (#5270)	6 years ago
wal_filter.h	Run automatic formatter against public header files (#5115)	6 years ago
write_batch.h	refactor SavePoints (#5192)	6 years ago
write_batch_base.h	Fix `WriteBatchBase::DeleteRange` API comment (#4935)	6 years ago
write_buffer_manager.h	WriteBufferManger doens't cost to cache if no limit is set (#4695)	6 years ago