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e648c1d9eb
rocksdb/utilities
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haoyuhuang e648c1d9eb Cache simulator: Optimize hybrid row-block cache. (#5616) 
Summary:
This PR optimizes the hybrid row-block cache simulator. If a Get request hits the cache, we treat all its future accesses as hits.

Consider a Get request (no snapshot) accesses multiple files, e.g, file1, file2, file3. We construct the row key as "fdnumber_key_0". Before this PR, if it hits the cache when searching the key in file1, we continue to process its accesses in file2 and file3 which is unnecessary.

With this PR, if "file1_key_0" is in the cache, we treat all future accesses of this Get request as hits.
Pull Request resolved: https://github.com/facebook/rocksdb/pull/5616

Differential Revision: D16453187

Pulled By: HaoyuHuang

fbshipit-source-id: 56f3169cc322322305baaf5543226a0824fae19f
2019-07-29 10:58:15 -07:00
..
backupable simplify include directive involving inttypes (#5402) 2019-06-06 13:56:07 -07:00
blob_db Fix bugs in WAL trash file handling (#5520) 2019-07-06 21:07:32 -07:00
cassandra Organizing rocksdb/db directory 2019-05-31 11:57:01 -07:00
checkpoint Export Import sst files (#5495) 2019-07-17 12:27:14 -07:00
compaction_filters Comment out unused variables 2018-03-05 13:13:41 -08:00
convenience Auto roll logger to enforce options.keep_log_file_num immediately after a new file is created (#5370) 2019-05-31 10:50:19 -07:00
leveldb_options Change RocksDB License 2017-07-15 16:11:23 -07:00
memory Organizing rocksdb/db directory 2019-05-31 11:57:01 -07:00
merge_operators Move some logging related files to logging/ (#5387) 2019-05-31 17:23:59 -07:00
option_change_migration Avoid double-compacting data in bottom level in manual compactions (#5138) 2019-04-16 23:32:20 -07:00
options simplify include directive involving inttypes (#5402) 2019-06-06 13:56:07 -07:00
persistent_cache Fix MyRocks compile warnings-treated-as-errors on Fedora 30, gcc 9.1.1 (#5553) 2019-07-12 17:30:51 -07:00
simulator_cache Cache simulator: Optimize hybrid row-block cache. (#5616) 2019-07-29 10:58:15 -07:00
table_properties_collectors Reduce the number of random iterations in compact_on_deletion_collector_test (#5635) 2019-07-26 15:53:34 -07:00
trace Move util/trace_replay.* to trace_replay/ (#5376) 2019-06-03 13:25:26 -07:00
transactions Use int64_t instead of ssize_t (#5638) 2019-07-26 16:36:49 -07:00
ttl Fix segfalut in ~DBWithTTLImpl() when called after Close() (#5485) 2019-06-20 13:08:17 -07:00
write_batch_with_index Organizing rocksdb/db directory 2019-05-31 11:57:01 -07:00
debug.cc Support GetAllKeyVersions() for non-default cf (#5544) 2019-07-07 22:43:52 -07:00
env_librados_test.cc Move test related files under util/ to test_util/ (#5377) 2019-05-30 11:25:51 -07:00
env_librados.cc Optionally wait on bytes_per_sync to smooth I/O (#5183) 2019-04-22 11:51:39 -07:00
env_librados.md Add EnvLibrados - RocksDB Env of RADOS (#1222) 2016-07-21 11:16:34 -07:00
env_mirror_test.cc Move test related files under util/ to test_util/ (#5377) 2019-05-30 11:25:51 -07:00
env_mirror.cc Optionally wait on bytes_per_sync to smooth I/O (#5183) 2019-04-22 11:51:39 -07:00
env_timed_test.cc Move test related files under util/ to test_util/ (#5377) 2019-05-30 11:25:51 -07:00
env_timed.cc Apply modernize-use-override (2nd iteration) 2019-02-14 14:41:36 -08:00
merge_operators.h Support StringAppendOperator(delimiter_char) constructor in java-api 2018-03-08 16:17:47 -08:00
object_registry_test.cc The ObjectRegistry class replaces the Registrar and NewCustomObjects.… (#5293) 2019-07-23 17:13:05 -07:00
object_registry.cc The ObjectRegistry class replaces the Registrar and NewCustomObjects.… (#5293) 2019-07-23 17:13:05 -07:00
util_merge_operators_test.cc Move test related files under util/ to test_util/ (#5377) 2019-05-30 11:25:51 -07:00