A library that provides an embeddable, persistent key-value store for fast storage.
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Andrew Kryczka 1a88c43751 Reduce empty SST creation/deletion in compaction (#4336)
Summary:
This is a followup to #4311. Checking `!RangeDelAggregator::IsEmpty()` before opening a dedicated range tombstone SST did not properly prevent empty SSTs from being generated. That's because it relies on `CollapsedRangeDelMap::Size`, which had an underflow bug when the map was empty. This PR fixes that underflow bug.

Also fixed an uninitialized variable in db_stress.
Pull Request resolved: https://github.com/facebook/rocksdb/pull/4336

Differential Revision: D9600080

Pulled By: ajkr

fbshipit-source-id: bc6980ca79d2cd01b825ebc9dbccd51c1a70cfc7
2018-08-31 12:28:52 -07:00
buckifier Grab straggler files to explicitly import AutoHeaders 2018-08-28 21:28:55 -07:00
build_tools Release 5.16 (#4298) 2018-08-21 14:43:08 -07:00
cache Support group commits of version edits (#3944) 2018-06-28 12:34:39 -07:00
cmake Search paths provided by intel's "tbbvars.sh". 2018-05-07 14:28:36 -07:00
coverage Remove unused imports, from python scripts. (#4057) 2018-06-26 12:43:04 -07:00
db Reduce empty SST creation/deletion in compaction (#4336) 2018-08-31 12:28:52 -07:00
docs data block hash index blog post 2018-08-29 10:58:10 -07:00
env use atomic O_CLOEXEC when available (#4328) 2018-08-29 20:27:43 -07:00
examples Pin top-level index on partitioned index/filter blocks (#4037) 2018-06-22 15:27:46 -07:00
hdfs Comment out unused variables 2018-03-05 13:13:41 -08:00
include/rocksdb BlobDB: GetLiveFiles and GetLiveFilesMetadata return relative path (#4326) 2018-08-31 12:12:49 -07:00
java Add CompactRangeOptions for Java (#4220) 2018-08-17 10:57:25 -07:00
memtable Suppress clang analyzer error (#4299) 2018-08-21 16:43:05 -07:00
monitoring Support group commits of version edits (#3944) 2018-06-28 12:34:39 -07:00
options Add path to WritableFileWriter. (#4039) 2018-08-23 10:12:58 -07:00
port Add path to WritableFileWriter. (#4039) 2018-08-23 10:12:58 -07:00
table Digest ZSTD compression dictionary once per SST file (#4251) 2018-08-23 19:28:18 -07:00
third-party Add GCC 8 to Travis (#3433) 2018-07-13 10:58:06 -07:00
tools Reduce empty SST creation/deletion in compaction (#4336) 2018-08-31 12:28:52 -07:00
util BlobDB: GetLiveFiles and GetLiveFilesMetadata return relative path (#4326) 2018-08-31 12:12:49 -07:00
utilities BlobDB: GetLiveFiles and GetLiveFilesMetadata return relative path (#4326) 2018-08-31 12:12:49 -07:00
.clang-format A script that automatically reformat affected lines 2014-01-14 12:21:24 -08:00
.gitignore RocksDB Trace Analyzer (#4091) 2018-08-13 11:44:02 -07:00
.lgtm.yml Create lgtm.yml for LGTM.com C/C++ analysis (#4058) 2018-06-26 12:43:04 -07:00
.travis.yml Add GCC 8 to Travis (#3433) 2018-07-13 10:58:06 -07:00
appveyor.yml Upgrade Appveyor to VS2017 2018-02-01 13:57:01 -08:00
AUTHORS Update RocksDB Authors File 2017-10-18 14:42:10 -07:00
CMakeLists.txt cmake: allow opting out debug runtime (#4317) 2018-08-27 15:58:59 -07:00
CODE_OF_CONDUCT.md Add Code of Conduct 2017-12-05 18:42:35 -08:00
CONTRIBUTING.md Add Code of Conduct 2017-12-05 18:42:35 -08:00
COPYING Add GPLv2 as an alternative license. 2017-04-27 18:06:12 -07:00
DEFAULT_OPTIONS_HISTORY.md options.delayed_write_rate use the rate of rate_limiter by default. 2017-05-24 09:58:24 -07:00
DUMP_FORMAT.md First version of rocksdb_dump and rocksdb_undump. 2015-06-19 16:24:36 -07:00
HISTORY.md Avoiding write stall caused by manual flushes (#4297) 2018-08-29 12:12:55 -07:00
INSTALL.md Enable compilation on OpenBSD 2018-03-19 12:30:05 -07:00
issue_template.md Add a template for issues 2017-09-29 11:41:28 -07:00
LANGUAGE-BINDINGS.md Added PingCaps Rust RocksDB and ObjectiveRocks (#4065) 2018-06-27 15:43:21 -07:00
LICENSE.Apache Change RocksDB License 2017-07-15 16:11:23 -07:00
LICENSE.leveldb Add back the LevelDB license file 2017-07-16 18:42:18 -07:00
Makefile Rename DecodeCFAndKey to resolve naming conflict in unity test (#4323) 2018-08-30 18:42:51 -07:00
README.md Create lgtm.yml for LGTM.com C/C++ analysis (#4058) 2018-06-26 12:43:04 -07:00
ROCKSDB_LITE.md Fix some typos in comments and docs. 2018-03-08 10:27:25 -08:00
src.mk Remove trace_analyzer_tool from LIB_SOURCES (#4331) 2018-08-29 21:28:40 -07:00
TARGETS Grab straggler files to explicitly import AutoHeaders 2018-08-28 21:28:55 -07:00
thirdparty.inc Provide a way to override windows memory allocator with jemalloc for ZSTD 2018-06-04 12:12:48 -07:00
USERS.md Support range deletion tombstones in IngestExternalFile SSTs (#3778) 2018-07-13 22:43:09 -07:00
Vagrantfile Adding CentOS 7 Vagrantfile & build script 2018-02-26 15:27:17 -08:00
WINDOWS_PORT.md Add GCC 8 to Travis (#3433) 2018-07-13 10:58:06 -07:00

RocksDB: A Persistent Key-Value Store for Flash and RAM Storage

Linux/Mac Build Status Windows Build status PPC64le Build Status

RocksDB is developed and maintained by Facebook Database Engineering Team. It is built on earlier work on LevelDB by Sanjay Ghemawat (sanjay@google.com) and Jeff Dean (jeff@google.com)

This code is a library that forms the core building block for a fast key value server, especially suited for storing data on flash drives. It has a Log-Structured-Merge-Database (LSM) design with flexible tradeoffs between Write-Amplification-Factor (WAF), Read-Amplification-Factor (RAF) and Space-Amplification-Factor (SAF). It has multi-threaded compactions, making it specially suitable for storing multiple terabytes of data in a single database.

Start with example usage here: https://github.com/facebook/rocksdb/tree/master/examples

See the github wiki for more explanation.

The public interface is in include/. Callers should not include or rely on the details of any other header files in this package. Those internal APIs may be changed without warning.

Design discussions are conducted in https://www.facebook.com/groups/rocksdb.dev/

License

RocksDB is dual-licensed under both the GPLv2 (found in the COPYING file in the root directory) and Apache 2.0 License (found in the LICENSE.Apache file in the root directory). You may select, at your option, one of the above-listed licenses.