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

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Changyu Bi 749b849a34 Fix memtable-only iterator regression (#10705) ... Summary: when there is a single memtable without range tombstones and no SST files in the database, DBIter should wrap memtable iterator directly. Currently we create a merging iterator on top of the memtable iterator, and have DBIter wrap around it. This causes iterator regression and this PR fixes this issue. Pull Request resolved: https://github.com/facebook/rocksdb/pull/10705 Test Plan: - `make check` - Performance: - Set up: `./db_bench -benchmarks=filluniquerandom -write_buffer_size=$((1 << 30)) -num=10000` - Benchmark: `./db_bench -benchmarks=seekrandom -use_existing_db=true -avoid_flush_during_recovery=true -write_buffer_size=$((1 << 30)) -num=10000 -threads=16 -duration=60 -seek_nexts=$seek_nexts` ``` seek_nexts main op/sec https://github.com/facebook/rocksdb/issues/10705 RocksDB v7.6 0 5746568 5749033 5786180 30 2411690 3006466 2837699 1000 102556 128902 124667 ``` Reviewed By: ajkr Differential Revision: D39644221 Pulled By: cbi42 fbshipit-source-id: 8063ff611ba31b0e5670041da3927c8c54b2097d		2 years ago
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compacted_db_impl.cc	Fix periodic_task unable to re-register the same task type (#10379)	2 years ago
compacted_db_impl.h	Don't wait for indirect flush in read-only DB (#10569)	2 years ago
db_impl.cc	Fix memtable-only iterator regression (#10705)	2 years ago
db_impl.h	Always verify SST unique IDs on SST file open (#10532)	2 years ago
db_impl_compaction_flush.cc	Sync dir containing CURRENT after RenameFile on CURRENT as much as possible (#10573)	2 years ago
db_impl_debug.cc	Fix periodic_task unable to re-register the same task type (#10379)	2 years ago
db_impl_experimental.cc	Remove unused fields from FileMetaData (temporarily) (#10443)	2 years ago
db_impl_files.cc	Do not hold mutex when write keys if not necessary (#7516)	2 years ago
db_impl_open.cc	Always verify SST unique IDs on SST file open (#10532)	2 years ago
db_impl_readonly.cc	Skip swaths of range tombstone covered keys in merging iterator (2022 edition) (#10449)	2 years ago
db_impl_readonly.h	Don't wait for indirect flush in read-only DB (#10569)	2 years ago
db_impl_secondary.cc	Skip swaths of range tombstone covered keys in merging iterator (2022 edition) (#10449)	2 years ago
db_impl_secondary.h	Don't wait for indirect flush in read-only DB (#10569)	2 years ago
db_impl_write.cc	Sync dir containing CURRENT after RenameFile on CURRENT as much as possible (#10573)	2 years ago