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Andrey Zagrebin aeed4f0749 #3865 fix performance regression introduced by MergeOperator.ShouldMerge (#4266) 
Summary:
This PR addresses issue #3865 and implements the following approach to fix it:
 - adds `MergeContext::GetOperandsDirectionForward` and `MergeContext::GetOperandsDirectionBackward` to query merge operands in a specific order
 - `MergeContext::GetOperands` becomes a shortcut for `MergeContext::GetOperandsDirectionForward`
 - pass `MergeContext::GetOperandsDirectionBackward` to `MergeOperator::ShouldMerge` and document the order
Pull Request resolved: https://github.com/facebook/rocksdb/pull/4266

Differential Revision: D9360750

Pulled By: sagar0

fbshipit-source-id: 20cb73ff017760b062ecdcf4382560767086e092
2018-08-16 10:58:05 -07:00
..
builder.cc
Revert changes in PR #4003 (#4263)
2018-08-11 16:57:36 -07:00
builder.h
Index value delta encoding (#3983)
2018-08-09 16:58:40 -07:00
c_test.c
comment unused parameters to turn on -Wunused-parameter flag
2018-04-12 17:59:16 -07:00
c.cc
c-api: add some missing options
2018-08-13 18:42:30 -07:00
column_family_test.cc
Per-thread unique test db names (#4135)
2018-07-13 17:27:39 -07:00
column_family.cc
Skip deleted WALs during recovery
2018-05-03 15:43:09 -07:00
column_family.h
Add max_subcompactions as a compaction option
2018-04-27 11:57:39 -07:00
compact_files_test.cc
Per-thread unique test db names (#4135)
2018-07-13 17:27:39 -07:00
compacted_db_impl.cc
Move prefix_extractor to MutableCFOptions
2018-05-21 14:43:11 -07:00
compacted_db_impl.h
Comment out unused variables
2018-03-05 13:13:41 -08:00
compaction_iteration_stats.h
add counter for deletion dropping optimization
2017-08-19 14:10:08 -07:00
compaction_iterator_test.cc
option for timing measurement of non-blocking ops during compaction (#4029)
2018-06-21 21:28:05 -07:00
compaction_iterator.cc
Range deletion performance improvements + cleanup (#4014)
2018-07-12 14:42:39 -07:00
compaction_iterator.h
option for timing measurement of non-blocking ops during compaction (#4029)
2018-06-21 21:28:05 -07:00
compaction_job_stats_test.cc
Per-thread unique test db names (#4135)
2018-07-13 17:27:39 -07:00
compaction_job_test.cc
Per-thread unique test db names (#4135)
2018-07-13 17:27:39 -07:00
compaction_job.cc
Add a unit test to verify iterators release data blocks after using them (#4170)
2018-08-13 17:43:14 -07:00
compaction_job.h
Allow DB resume after background errors (#3997)
2018-06-28 12:34:40 -07:00
compaction_picker_test.cc
Remove random writes from SST file ingestion (#4172)
2018-07-27 16:12:23 -07:00
compaction_picker_universal.cc
Remove random writes from SST file ingestion (#4172)
2018-07-27 16:12:23 -07:00
compaction_picker_universal.h
Delete triggered compaction for universal style
2018-05-29 15:44:34 -07:00
compaction_picker.cc
compaction: fix max_subcompactions option for CompactRange (#4082)
2018-07-05 20:12:56 -07:00
compaction_picker.h
Add bottommost_compression_opts to for bottommost_compression (#3985)
2018-06-27 17:42:38 -07:00
compaction.cc
Add bottommost_compression_opts to for bottommost_compression (#3985)
2018-06-27 17:42:38 -07:00
compaction.h
Add bottommost_compression_opts to for bottommost_compression (#3985)
2018-06-27 17:42:38 -07:00
comparator_db_test.cc
Per-thread unique test db names (#4135)
2018-07-13 17:27:39 -07:00
convenience.cc
Pin mmap files in ReadOnlyDB (#4053)
2018-06-27 17:13:34 -07:00
corruption_test.cc
Per-thread unique test db names (#4135)
2018-07-13 17:27:39 -07:00
cuckoo_table_db_test.cc
Per-thread unique test db names (#4135)
2018-07-13 17:27:39 -07:00
db_basic_test.cc
Per-thread unique test db names (#4135)
2018-07-13 17:27:39 -07:00
db_blob_index_test.cc
fix lite build
2017-10-17 08:57:09 -07:00
db_block_cache_test.cc
LRUCache midpoint insertion
2018-05-24 15:57:33 -07:00
db_bloom_filter_test.cc
PrefixMayMatch: remove unnecessary check for prefix_extractor_ (#4067)
2018-06-27 20:42:43 -07:00
db_compaction_filter_test.cc
Remove tests from ROCKSDB_VALGRIND_RUN
2018-05-30 16:15:16 -07:00
db_compaction_test.cc
Allow ttl to be changed dynamically (#4133)
2018-07-16 14:27:53 -07:00
db_dynamic_level_test.cc
fix memory leak in two_level_iterator
2018-04-15 17:26:26 -07:00
db_encryption_test.cc
Change RocksDB License
2017-07-15 16:11:23 -07:00
db_filesnapshot.cc
fix behavior does not match name for "IsFileDeletionsEnabled"
2018-03-21 22:13:34 -07:00
db_flush_test.cc
Disable DBFlushTest.SyncFail and DBTest.GroupCommitTest on Travis (#4154)
2018-07-18 18:43:11 -07:00
db_impl_compaction_flush.cc
Update JobContext. (#3949)
2018-08-03 17:42:34 -07:00
db_impl_debug.cc
Allow DB resume after background errors (#3997)
2018-06-28 12:34:40 -07:00
db_impl_experimental.cc
Update JobContext. (#3949)
2018-08-03 17:42:34 -07:00
db_impl_files.cc
SetOptions Backup Race Condition (#4108)
2018-07-11 14:57:46 -07:00
db_impl_open.cc
fix use-after-free error involving a temporary string (#4240)
2018-08-09 11:13:10 -07:00
db_impl_readonly.cc
Trace and Replay for RocksDB (#3837)
2018-08-01 00:27:08 -07:00
db_impl_readonly.h
allowing CompactFiles to return new file names
2018-03-15 11:58:12 -07:00
db_impl_write.cc
Improve FullFilterBitsReader::HashMayMatch's doc (#4202)
2018-08-06 11:13:18 -07:00
db_impl.cc
Add tracing function of Seek() and SeekForPrev() to trace_replay (#4228)
2018-08-10 17:57:40 -07:00
db_impl.h
Add tracing function of Seek() and SeekForPrev() to trace_replay (#4228)
2018-08-10 17:57:40 -07:00
db_info_dumper.cc
Change RocksDB License
2017-07-15 16:11:23 -07:00
db_info_dumper.h
Change RocksDB License
2017-07-15 16:11:23 -07:00
db_inplace_update_test.cc
Change RocksDB License
2017-07-15 16:11:23 -07:00
db_io_failure_test.cc
Fix LITE unit tests
2017-07-26 21:11:47 -07:00
db_iter_stress_test.cc
Move prefix_extractor to MutableCFOptions
2018-05-21 14:43:11 -07:00
db_iter_test.cc
Fix regression bug of Prev() with upper bound (#3989)
2018-06-12 16:57:36 -07:00
db_iter.cc
Add tracing function of Seek() and SeekForPrev() to trace_replay (#4228)
2018-08-10 17:57:40 -07:00
db_iter.h
Add tracing function of Seek() and SeekForPrev() to trace_replay (#4228)
2018-08-10 17:57:40 -07:00
db_iterator_test.cc
Add tracing function of Seek() and SeekForPrev() to trace_replay (#4228)
2018-08-10 17:57:40 -07:00
db_log_iter_test.cc
fix memory leak in two_level_iterator
2018-04-15 17:26:26 -07:00
db_memtable_test.cc
Comment out unused variables
2018-03-05 13:13:41 -08:00
db_merge_operator_test.cc
WriteUnPrepared Txn: Disable seek to snapshot optimization (#3955)
2018-06-27 12:23:07 -07:00
db_options_test.cc
PersistRocksDBOptions() to use WritableFileWriter
2018-05-21 16:42:22 -07:00
db_properties_test.cc
Index value delta encoding (#3983)
2018-08-09 16:58:40 -07:00
db_range_del_test.cc
Remove random writes from SST file ingestion (#4172)
2018-07-27 16:12:23 -07:00
db_sst_test.cc
Simplify DBWithMaxSpaceAllowedRandomized (#4235)
2018-08-08 07:27:46 -07:00
db_statistics_test.cc
Change RocksDB License
2017-07-15 16:11:23 -07:00
db_table_properties_test.cc
fix deletion-triggered compaction in table builder
2017-09-28 18:17:30 -07:00
db_tailing_iter_test.cc
Remove managed iterator
2018-07-17 14:43:18 -07:00
db_test2.cc
Add a unit test to verify iterators release data blocks after using them (#4170)
2018-08-13 17:43:14 -07:00
db_test_util.cc
Index value delta encoding (#3983)
2018-08-09 16:58:40 -07:00
db_test_util.h
Index value delta encoding (#3983)
2018-08-09 16:58:40 -07:00
db_test.cc
Disable DBFlushTest.SyncFail and DBTest.GroupCommitTest on Travis (#4154)
2018-07-18 18:43:11 -07:00
db_universal_compaction_test.cc
Reformatting some recent changes (#4161)
2018-07-20 14:43:38 -07:00
db_wal_test.cc
Skip deleted WALs during recovery
2018-05-03 15:43:09 -07:00
db_write_test.cc
Suppress tsan lock-order-inversion on FlushWAL
2018-05-14 21:13:35 -07:00
dbformat_test.cc
Relax VersionStorageInfo::GetOverlappingInputs check (#4050)
2018-07-13 17:42:38 -07:00
dbformat.cc
types: add kEntryBlobIndex for TablePropertiesCollector (#4233)
2018-08-06 18:27:44 -07:00
dbformat.h
Refactor IndexBlockIter (#4141)
2018-07-16 17:13:10 -07:00
deletefile_test.cc
Per-thread unique test db names (#4135)
2018-07-13 17:27:39 -07:00
error_handler_test.cc
Allow DB resume after background errors (#3997)
2018-06-28 12:34:40 -07:00
error_handler.cc
Allow DB resume after background errors (#3997)
2018-06-28 12:34:40 -07:00
error_handler.h
Allow DB resume after background errors (#3997)
2018-06-28 12:34:40 -07:00
event_helpers.cc
comment unused parameters to turn on -Wunused-parameter flag
2018-04-12 17:59:16 -07:00
event_helpers.h
Change RocksDB License
2017-07-15 16:11:23 -07:00
experimental.cc
comment unused parameters to turn on -Wunused-parameter flag
2018-04-12 17:59:16 -07:00
external_sst_file_basic_test.cc
Support range deletion tombstones in IngestExternalFile SSTs (#3778)
2018-07-13 22:43:09 -07:00
external_sst_file_ingestion_job.cc
Remove random writes from SST file ingestion (#4172)
2018-07-27 16:12:23 -07:00
external_sst_file_ingestion_job.h
Remove random writes from SST file ingestion (#4172)
2018-07-27 16:12:23 -07:00
external_sst_file_test.cc
Pending output file number should be released after bulkload failure (#4145)
2018-07-17 14:13:16 -07:00
fault_injection_test.cc
Per-thread unique test db names (#4135)
2018-07-13 17:27:39 -07:00
file_indexer_test.cc
Comment out unused variables
2018-03-05 13:13:41 -08:00
file_indexer.cc
Change RocksDB License
2017-07-15 16:11:23 -07:00
file_indexer.h
Change RocksDB License
2017-07-15 16:11:23 -07:00
filename_test.cc
Change RocksDB License
2017-07-15 16:11:23 -07:00
flush_job_test.cc
Remove random writes from SST file ingestion (#4172)
2018-07-27 16:12:23 -07:00
flush_job.cc
Remove random writes from SST file ingestion (#4172)
2018-07-27 16:12:23 -07:00
flush_job.h
Skip deleted WALs during recovery
2018-05-03 15:43:09 -07:00
flush_scheduler.cc
Change RocksDB License
2017-07-15 16:11:23 -07:00
flush_scheduler.h
Change RocksDB License
2017-07-15 16:11:23 -07:00
forward_iterator_bench.cc
Per-thread unique test db names (#4135)
2018-07-13 17:27:39 -07:00
forward_iterator.cc
Relax VersionStorageInfo::GetOverlappingInputs check (#4050)
2018-07-13 17:42:38 -07:00
forward_iterator.h
Comment out unused variables
2018-03-05 13:13:41 -08:00
internal_stats.cc
Add kOptionsStatistics to GetProperty() (#3966)
2018-06-15 17:28:01 -07:00
internal_stats.h
Add kOptionsStatistics to GetProperty() (#3966)
2018-06-15 17:28:01 -07:00
job_context.h
Update JobContext. (#3949)
2018-08-03 17:42:34 -07:00
listener_test.cc
fix some text in comments.
2018-04-10 15:59:24 -07:00
log_format.h
Change RocksDB License
2017-07-15 16:11:23 -07:00
log_reader.cc
Add GCC 8 to Travis (#3433)
2018-07-13 10:58:06 -07:00
log_reader.h
Suppress lint in old files
2018-01-29 12:56:42 -08:00
log_test.cc
Add file name info to SequentialFileReader. (#4026)
2018-06-21 08:42:24 -07:00
log_writer.cc
Pass manual_wal_flush also to the first wal file
2018-05-14 10:57:56 -07:00
log_writer.h
Pass manual_wal_flush also to the first wal file
2018-05-14 10:57:56 -07:00
logs_with_prep_tracker.cc
Skip deleted WALs during recovery
2018-05-03 15:43:09 -07:00
logs_with_prep_tracker.h
Skip deleted WALs during recovery
2018-05-03 15:43:09 -07:00
malloc_stats.cc
Disallow compactions if there isn't enough free space
2018-03-06 16:27:54 -08:00
malloc_stats.h
Change RocksDB License
2017-07-15 16:11:23 -07:00
manual_compaction_test.cc
Per-thread unique test db names (#4135)
2018-07-13 17:27:39 -07:00
memtable_list_test.cc
Per-thread unique test db names (#4135)
2018-07-13 17:27:39 -07:00
memtable_list.cc
Support group commits of version edits (#3944)
2018-06-28 12:34:39 -07:00
memtable_list.h
Skip deleted WALs during recovery
2018-05-03 15:43:09 -07:00
memtable.cc
#3865 fix performance regression introduced by MergeOperator.ShouldMerge (#4266)
2018-08-16 10:58:05 -07:00
memtable.h
Index value delta encoding (#3983)
2018-08-09 16:58:40 -07:00
merge_context.h
#3865 fix performance regression introduced by MergeOperator.ShouldMerge (#4266)
2018-08-16 10:58:05 -07:00
merge_helper_test.cc
Change RocksDB License
2017-07-15 16:11:23 -07:00
merge_helper.cc
Range deletion performance improvements + cleanup (#4014)
2018-07-12 14:42:39 -07:00
merge_helper.h
Index value delta encoding (#3983)
2018-08-09 16:58:40 -07:00
merge_operator.cc
Change RocksDB License
2017-07-15 16:11:23 -07:00
merge_test.cc
Per-thread unique test db names (#4135)
2018-07-13 17:27:39 -07:00
obsolete_files_test.cc
Modify verification logic of ObsoleteOptionsFileTest (#4218)
2018-08-03 13:57:40 -07:00
options_file_test.cc
Per-thread unique test db names (#4135)
2018-07-13 17:27:39 -07:00
perf_context_test.cc
Per-thread unique test db names (#4135)
2018-07-13 17:27:39 -07:00
pinned_iterators_manager.h
Change RocksDB License
2017-07-15 16:11:23 -07:00
plain_table_db_test.cc
Per-thread unique test db names (#4135)
2018-07-13 17:27:39 -07:00
pre_release_callback.h
Fix pre_release callback argument list.
2018-04-05 11:12:16 -07:00
prefix_test.cc
Per-thread unique test db names (#4135)
2018-07-13 17:27:39 -07:00
range_del_aggregator_test.cc
Relax VersionStorageInfo::GetOverlappingInputs check (#4050)
2018-07-13 17:42:38 -07:00
range_del_aggregator.cc
fix compilation with g++ option -Wsuggest-override (#4272)
2018-08-14 15:13:10 -07:00
range_del_aggregator.h
Support range deletion tombstones in IngestExternalFile SSTs (#3778)
2018-07-13 22:43:09 -07:00
read_callback.h
WriteUnPrepared Txn: Disable seek to snapshot optimization (#3955)
2018-06-27 12:23:07 -07:00
repair_test.cc
fix memory leak in two_level_iterator
2018-04-15 17:26:26 -07:00
repair.cc
Relax VersionStorageInfo::GetOverlappingInputs check (#4050)
2018-07-13 17:42:38 -07:00
snapshot_checker.h
fix compilation with g++ option -Wsuggest-override (#4272)
2018-08-14 15:13:10 -07:00
snapshot_impl.cc
Change RocksDB License
2017-07-15 16:11:23 -07:00
snapshot_impl.h
BlobDB: Fix VisibleToActiveSnapshot() (#4236)
2018-08-06 16:57:42 -07:00
table_cache.cc
Index value delta encoding (#3983)
2018-08-09 16:58:40 -07:00
table_cache.h
Index value delta encoding (#3983)
2018-08-09 16:58:40 -07:00
table_properties_collector_test.cc
Should only decode restart points for uncompressed blocks (#3996)
2018-06-15 19:26:58 -07:00
table_properties_collector.cc
Comment out unused variables
2018-03-05 13:13:41 -08:00
table_properties_collector.h
Comment out unused variables
2018-03-05 13:13:41 -08:00
transaction_log_impl.cc
WriteUnPrepared: Add support for recovering WriteUnprepared transactions (#4078)
2018-07-06 17:59:13 -07:00
transaction_log_impl.h
WritePrepared Txn: Refactor conf params
2017-11-10 17:28:12 -08:00
version_builder_test.cc
Remove random writes from SST file ingestion (#4172)
2018-07-27 16:12:23 -07:00
version_builder.cc
Remove random writes from SST file ingestion (#4172)
2018-07-27 16:12:23 -07:00
version_builder.h
Move prefix_extractor to MutableCFOptions
2018-05-21 14:43:11 -07:00
version_edit_test.cc
Skip deleted WALs during recovery
2018-05-03 15:43:09 -07:00
version_edit.cc
Index value delta encoding (#3983)
2018-08-09 16:58:40 -07:00
version_edit.h
Remove random writes from SST file ingestion (#4172)
2018-07-27 16:12:23 -07:00
version_set_test.cc
Relax VersionStorageInfo::GetOverlappingInputs check (#4050)
2018-07-13 17:42:38 -07:00
version_set.cc
Remove random writes from SST file ingestion (#4172)
2018-07-27 16:12:23 -07:00
version_set.h
Index value delta encoding (#3983)
2018-08-09 16:58:40 -07:00
wal_manager_test.cc
Per-thread unique test db names (#4135)
2018-07-13 17:27:39 -07:00
wal_manager.cc
Add file name info to SequentialFileReader. (#4026)
2018-06-21 08:42:24 -07:00
wal_manager.h
Fix memleak when DB::DeleteFile()
2018-01-11 18:57:33 -08:00
write_batch_base.cc
Change RocksDB License
2017-07-15 16:11:23 -07:00
write_batch_internal.h
WriteUnPrepared: Add new WAL marker kTypeBeginUnprepareXID (#4069)
2018-06-28 18:58:29 -07:00
write_batch_test.cc
WriteUnPrepared: Add support for recovering WriteUnprepared transactions (#4078)
2018-07-06 17:59:13 -07:00
write_batch.cc
WriteUnPrepared: Implement unprepared batches for transactions (#4104)
2018-07-24 00:13:18 -07:00
write_callback_test.cc
Per-thread unique test db names (#4135)
2018-07-13 17:27:39 -07:00
write_callback.h
Change RocksDB License
2017-07-15 16:11:23 -07:00
write_controller_test.cc
Change RocksDB License
2017-07-15 16:11:23 -07:00
write_controller.cc
Change RocksDB License
2017-07-15 16:11:23 -07:00
write_controller.h
Change RocksDB License
2017-07-15 16:11:23 -07:00
write_thread.cc
Fix write get stuck when pipelined write is enabled (#4143)
2018-07-17 17:27:51 -07:00
write_thread.h
Fix write get stuck when pipelined write is enabled (#4143)
2018-07-17 17:27:51 -07:00