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

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Maysam Yabandeh 1a5a93ff74 WritePrepared: Fix double snapshot release issue (#4727) ... Summary: Currently the garbage collection of items in old_commit_map_ was done upon ::ReleaseSnapshot. The assumption behind this method was that the sequence number of snapshots are unique, which is incorrect. In the very rare cases that two consecutive snapshot have the same sequence number this could lead the release of the first snapshot affect the old_commit_map_ that is necessary to service the reads of the second snapshot. The bug would be triggered only if i) two snapshot have the same seq, ii) both of them are very old (older than the last ~4m transactions), and iii) there is commit entry overlapping with the snapshot seq number. It is fixed by doing the cleanup of old_commit_map_ in UpdateSnapshot: the new list of snapshots are compared with the old one and the missing sequence numbers are concluded released. If two snapshots have the same seq number, after the release of one of them, the seq number still appears in the snapshot least and thus not cleaned up prematurely. Pull Request resolved: https://github.com/facebook/rocksdb/pull/4727 Differential Revision: D13246495 Pulled By: maysamyabandeh fbshipit-source-id: 93b87a5042afd8060889df245526d3f5d29de9fe		6 years ago
..
backupable	Backup engine support for direct I/O reads (#4640)	6 years ago
blob_db	BlobDB: use char array instead of string as buffer (#4662)	6 years ago
cassandra	Update all unique/shared_ptr instances to be qualified with namespace std (#4638)	6 years ago
checkpoint	Update all unique/shared_ptr instances to be qualified with namespace std (#4638)	6 years ago
compaction_filters	Comment out unused variables	7 years ago
convenience	Change RocksDB License	7 years ago
date_tiered	Clean up FragmentedRangeTombstoneList (#4692)	6 years ago
document	Update all unique/shared_ptr instances to be qualified with namespace std (#4638)	6 years ago
geodb	avoid copying when iterating using range-based for (#4459)	6 years ago
leveldb_options	Change RocksDB License	7 years ago
lua	Per-thread unique test db names (#4135)	6 years ago
memory	Per-thread unique test db names (#4135)	6 years ago
merge_operators	Support pragma once in all header files and cleanup some warnings (#4339)	6 years ago
option_change_migration	comment unused parameters to turn on -Wunused-parameter flag	7 years ago
options	Update all unique/shared_ptr instances to be qualified with namespace std (#4638)	6 years ago
persistent_cache	Update all unique/shared_ptr instances to be qualified with namespace std (#4638)	6 years ago
redis	rocksdb: put `#pragma once` before `#ifdef`	6 years ago
simulator_cache	Add path to WritableFileWriter. (#4039)	6 years ago
spatialdb	Update all unique/shared_ptr instances to be qualified with namespace std (#4638)	6 years ago
table_properties_collectors	Allow dynamic modification of window size and deletion trigger (#4403)	6 years ago
trace	Add the max trace file size limitation option to Tracing (#4610)	6 years ago
transactions	WritePrepared: Fix double snapshot release issue (#4727)	6 years ago
ttl	Update all unique/shared_ptr instances to be qualified with namespace std (#4638)	6 years ago
write_batch_with_index	Revert "apply ReadOptions.iterate_upper_bound to transaction iterator… (#4705)	6 years ago
col_buf_decoder.cc	Support pragma once in all header files and cleanup some warnings (#4339)	6 years ago
col_buf_decoder.h	Comment out unused variables	7 years ago
col_buf_encoder.cc	fix shift UBSAN error in col_buf_encoder.cc	7 years ago
col_buf_encoder.h	Change RocksDB License	7 years ago
column_aware_encoding_exp.cc	Update all unique/shared_ptr instances to be qualified with namespace std (#4638)	6 years ago
column_aware_encoding_test.cc	Change RocksDB License	7 years ago
column_aware_encoding_util.cc	Revert "Digest ZSTD compression dictionary once per SST file (#4251)" (#4347)	6 years ago
column_aware_encoding_util.h	Move prefix_extractor to MutableCFOptions	7 years ago
debug.cc	Clean up FragmentedRangeTombstoneList (#4692)	6 years ago
env_librados.cc	Suppress lint in old files	7 years ago
env_librados.md	Add EnvLibrados - RocksDB Env of RADOS (#1222)	8 years ago
env_librados_test.cc	Update all unique/shared_ptr instances to be qualified with namespace std (#4638)	6 years ago
env_mirror.cc	Update all unique/shared_ptr instances to be qualified with namespace std (#4638)	6 years ago
env_mirror_test.cc	Update all unique/shared_ptr instances to be qualified with namespace std (#4638)	6 years ago
env_timed.cc	Update all unique/shared_ptr instances to be qualified with namespace std (#4638)	6 years ago
env_timed_test.cc	fix memory leak in two_level_iterator	7 years ago
merge_operators.h	Support StringAppendOperator(delimiter_char) constructor in java-api	7 years ago
object_registry_test.cc	fix memory leak in two_level_iterator	7 years ago
util_merge_operators_test.cc	Change RocksDB License	7 years ago