A library that provides an embeddable, persistent key-value store for fast storage.
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Andrew Kryczka 17f9a181d5 Reduce empty SST creation/deletion during compaction (#4311)
Summary:
I have a PR to start calling `OnTableFileCreated` for empty SSTs: #4307. However, it is a behavior change so should not go into a patch release.

This PR adds back a check to make sure range deletions at least exist before starting file creation. This PR should be safe to backport to earlier versions.
Pull Request resolved: https://github.com/facebook/rocksdb/pull/4311

Differential Revision: D9493734

Pulled By: ajkr

fbshipit-source-id: f0d43cda4cfd904f133cfe3a6eb622f52a9ccbe8
2018-08-24 12:27:57 -07:00
buckifier Remove two CI tests (#4110) 2018-07-12 11:43:25 -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 during compaction (#4311) 2018-08-24 12:27:57 -07:00
docs Advisor: README and blog, and also tests for DBBenchRunner, DatabaseOptions (#4201) 2018-08-01 16:13:09 -07:00
env Fix the build failure with OS_ANDROID (#4232) 2018-08-08 08:12:02 -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 Adding a method for memtable class for memtable getting flushed. (#4304) 2018-08-23 17:14:25 -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 Fix clang build of db_stress (#4312) 2018-08-23 21:57:57 -07:00
util Digest ZSTD compression dictionary once per SST file (#4251) 2018-08-23 19:28:18 -07:00
utilities Digest ZSTD compression dictionary once per SST file (#4251) 2018-08-23 19:28:18 -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 Improve point-lookup performance using a data block hash index (#4174) 2018-08-15 14:30:03 -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 Reduce empty SST creation/deletion during compaction (#4311) 2018-08-24 12:27:57 -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 Adjusted the Makefile of trace_analyzer to isolate the Gflags from other (#4290) 2018-08-21 10:47:24 -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 Adjusted the Makefile of trace_analyzer to isolate the Gflags from other (#4290) 2018-08-21 10:47:24 -07:00
TARGETS Improve point-lookup performance using a data block hash index (#4174) 2018-08-15 14:30:03 -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.