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

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Yi Wu 07bdcb91fe New WriteImpl to pipeline WAL/memtable write ... Summary: PipelineWriteImpl is an alternative approach to WriteImpl. In WriteImpl, only one thread is allow to write at the same time. This thread will do both WAL and memtable writes for all write threads in the write group. Pending writers wait in queue until the current writer finishes. In the pipeline write approach, two queue is maintained: one WAL writer queue and one memtable writer queue. All writers (regardless of whether they need to write WAL) will still need to first join the WAL writer queue, and after the house keeping work and WAL writing, they will need to join memtable writer queue if needed. The benefit of this approach is that 1. Writers without memtable writes (e.g. the prepare phase of two phase commit) can exit write thread once WAL write is finish. They don't need to wait for memtable writes in case of group commit. 2. Pending writers only need to wait for previous WAL writer finish to be able to join the write thread, instead of wait also for previous memtable writes. Merging #2056 and #2058 into this PR. Closes https://github.com/facebook/rocksdb/pull/2286 Differential Revision: D5054606 Pulled By: yiwu-arbug fbshipit-source-id: ee5b11efd19d3e39d6b7210937b11cefdd4d1c8d		8 years ago
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utilities	fixed typo	8 years ago
advanced_options.h	Fixed some spelling mistakes	8 years ago
c.h	Add ROCKSDB_LIBRARY_API macro to a few C APIs, to fix windows build	8 years ago
cache.h	Fixed some spelling mistakes	8 years ago
cleanable.h	Pinnableslice (2nd attempt)	8 years ago
compaction_filter.h	Fixed some spelling mistakes	8 years ago
compaction_job_stats.h	Fixed some spelling mistakes	8 years ago
comparator.h	Updated all copyright headers to the new format.	9 years ago
convenience.h	Fixed some spelling mistakes	8 years ago
db.h	Fixed some spelling mistakes	8 years ago
db_bench_tool.h	Separeate main from bench functionality to allow cusomizations	9 years ago
db_dump_tool.h	Add GPLv2 as an alternative license.	8 years ago
env.h	Fixed some spelling mistakes	8 years ago
experimental.h	Updated all copyright headers to the new format.	9 years ago
filter_policy.h	Fixed some spelling mistakes	8 years ago
flush_block_policy.h	Configure index partition size	8 years ago
iostats_context.h	cross-platform compatibility improvements	8 years ago
iterator.h	Pinnableslice (2nd attempt)	8 years ago
ldb_tool.h	Allow Users to change customized ldb tools' header in help printing	8 years ago
listener.h	Allow IntraL0 compaction in FIFO Compaction	8 years ago
memtablerep.h	Unified InlineSkipList::Insert algorithm with hinting	8 years ago
merge_operator.h	[rocksdb][PR] Remove option min_partial_merge_operands and verify_checksums_in_comp…	8 years ago
metadata.h	Updated all copyright headers to the new format.	9 years ago
options.h	New WriteImpl to pipeline WAL/memtable write	8 years ago
perf_context.h	cross-platform compatibility improvements	8 years ago
perf_level.h	Move away from enum char value -1	9 years ago
persistent_cache.h	Dump persistent cache options	8 years ago
rate_limiter.h	Fixed some spelling mistakes	8 years ago
slice.h	Fixed some spelling mistakes	8 years ago
slice_transform.h	Fixed some spelling mistakes	8 years ago
snapshot.h	Add GPLv2 as an alternative license.	8 years ago
sst_dump_tool.h	Updated all copyright headers to the new format.	9 years ago
sst_file_manager.h	Fixed some spelling mistakes	8 years ago
sst_file_writer.h	Add GPLv2 as an alternative license.	8 years ago
statistics.h	Fixed some spelling mistakes	8 years ago
status.h	Limit maximum memory used in the WriteBatch representation	8 years ago
table.h	Fixed some spelling mistakes	8 years ago
table_properties.h	Support SST files with Global sequence numbers [reland]	8 years ago
thread_status.h	Fixed some spelling mistakes	8 years ago
threadpool.h	Add GPLv2 as an alternative license.	8 years ago
transaction_log.h	Updated all copyright headers to the new format.	9 years ago
types.h	Updated all copyright headers to the new format.	9 years ago
universal_compaction.h	Fixed some spelling mistakes	8 years ago
version.h	Release RocksDB 5.5.0	8 years ago
wal_filter.h	Avoid overloaded virtual function	9 years ago
write_batch.h	Fixed some spelling mistakes	8 years ago
write_batch_base.h	Fixed some spelling mistakes	8 years ago
write_buffer_manager.h	Add GPLv2 as an alternative license.	8 years ago