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

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Maysam Yabandeh caf0f53a74 Index value delta encoding (#3983) ... Summary: Given that index value is a BlockHandle, which is basically an <offset, size> pair we can apply delta encoding on the values. The first value at each index restart interval encoded the full BlockHandle but the rest encode only the size. Refer to IndexBlockIter::DecodeCurrentValue for the detail of the encoding. This reduces the index size which helps using the block cache more efficiently. The feature is enabled with using format_version 4. The feature comes with a bit of cpu overhead which should be paid back by the higher cache hits due to smaller index block size. Results with sysbench read-only using 4k blocks and using 16 index restart interval: Format 2: 19585 rocksdb read-only range=100 Format 3: 19569 rocksdb read-only range=100 Format 4: 19352 rocksdb read-only range=100 Pull Request resolved: https://github.com/facebook/rocksdb/pull/3983 Differential Revision: D8361343 Pulled By: maysamyabandeh fbshipit-source-id: f882ee082322acac32b0072e2bdbb0b5f854e651		6 years ago
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backupable	Improve FullFilterBitsReader::HashMayMatch's doc (#4202)	6 years ago
blob_db	BlobDB: Can return expiration together with Get() (#4227)	6 years ago
cassandra	Per-thread unique test db names (#4135)	6 years ago
checkpoint	Per-thread unique test db names (#4135)	6 years ago
compaction_filters	Comment out unused variables	7 years ago
convenience	Change RocksDB License	7 years ago
date_tiered	Per-thread unique test db names (#4135)	6 years ago
document	Per-thread unique test db names (#4135)	6 years ago
geodb	Per-thread unique test db names (#4135)	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	Per-thread unique test db names (#4135)	6 years ago
option_change_migration	comment unused parameters to turn on -Wunused-parameter flag	7 years ago
options	Per-thread unique test db names (#4135)	6 years ago
persistent_cache	Improve FullFilterBitsReader::HashMayMatch's doc (#4202)	6 years ago
redis	Per-thread unique test db names (#4135)	6 years ago
simulator_cache	Per-thread unique test db names (#4135)	6 years ago
spatialdb	Per-thread unique test db names (#4135)	6 years ago
table_properties_collectors	Reduce runtime of compact_on_deletion_collector_test (#4117)	6 years ago
trace	Trace and Replay for RocksDB (#3837)	6 years ago
transactions	Index value delta encoding (#3983)	6 years ago
ttl	Per-thread unique test db names (#4135)	6 years ago
write_batch_with_index	WriteUnPrepared: Implement unprepared batches for transactions (#4104)	6 years ago
col_buf_decoder.cc	Change RocksDB License	7 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	fix memory leak in two_level_iterator	7 years ago
column_aware_encoding_test.cc	Change RocksDB License	7 years ago
column_aware_encoding_util.cc	Pin mmap files in ReadOnlyDB (#4053)	6 years ago
column_aware_encoding_util.h	Move prefix_extractor to MutableCFOptions	7 years ago
debug.cc	Fix naming in InternalKey	7 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	Change RocksDB License	7 years ago
env_mirror.cc	Change RocksDB License	7 years ago
env_mirror_test.cc	Change RocksDB License	7 years ago
env_timed.cc	comment unused parameters to turn on -Wunused-parameter flag	7 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