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A library that provides an embeddable, persistent key-value store for fast storage.
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7e4e381495
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Maysam Yabandeh 7e4e381495 Fix the bloom filter skipping empty prefixes 
Summary:
bc0da4b512 optimized bloom filters by skipping duplicate entires when the whole key and prefixes are both added to the bloom. It however used empty string as the initial value of the last entry added to the bloom. This is incorrect since empty key/prefix are valid entires by themselves. This patch fixes that.
Closes https://github.com/facebook/rocksdb/pull/3776

Differential Revision: D7778803

Pulled By: maysamyabandeh

fbshipit-source-id: d5a065daebee17f9403cac51e9d5626aac87bfbc
2018-04-26 13:28:31 -07:00
buckifier Update buckifier and TARGETS 2018-03-30 14:26:53 -07:00
build_tools Pass -latomic to linker when using clang 2018-04-25 12:13:41 -07:00
cache comment unused parameters to turn on -Wunused-parameter flag 2018-04-12 17:59:16 -07:00
cmake add missing config checks to CMakeLists.txt 2017-11-30 22:57:00 -08:00
coverage Suppress lint in old files 2018-01-29 12:56:42 -08:00
db Rate limiter should be allowed to share between different rocksdb instances in C API 2018-04-25 15:57:48 -07:00
docs Adding blog post for 5.10.2 release 2018-02-13 11:56:59 -08:00
env initialize local variable for UBSAN in PosixEnv function 2018-04-25 13:42:02 -07:00
examples Pinnableslice examples and blog post 2017-08-24 12:26:07 -07:00
hdfs Comment out unused variables 2018-03-05 13:13:41 -08:00
include/rocksdb Fix clang build failure with -Wgnu-redeclared-enum 2018-04-25 15:42:46 -07:00
java Add a stat for MultiGet keys found, update memtable hit/miss stats 2018-04-20 15:28:19 -07:00
memtable Fix GitHub issue #3716: gcc-8 warnings 2018-04-20 13:42:47 -07:00
monitoring Improve write time breakdown stats 2018-04-23 17:58:54 -07:00
options fix calling SetOptions on deprecated options 2018-04-10 19:02:09 -07:00
port CloseHandle docs says that the return is non-zero, does not say TRUE(1) 2018-03-20 18:43:02 -07:00
table Fix the bloom filter skipping empty prefixes 2018-04-26 13:28:31 -07:00
third-party fix some text in comments. 2018-04-10 15:59:24 -07:00
tools Add crash-recovery correctness check to db_stress 2018-04-24 15:58:22 -07:00
util WritePrepared Txn: disable rollback in stress test 2018-04-26 09:27:55 -07:00
utilities Avoid directory renames in BackupEngine 2018-04-20 17:28:33 -07:00
.clang-format A script that automatically reformat affected lines 2014-01-14 12:21:24 -08:00
.gitignore Remove leftover references to phutil_module_cache 2017-08-23 12:12:21 -07:00
.travis.yml add 4th test_group in travis 2018-03-13 18:57:29 -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: add options for enabling TBB and NUMA support 2018-04-25 14:26:55 -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 Support lowering CPU priority of background threads 2018-04-24 08:41:51 -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 Add Nim to the list of language bindings 2018-01-29 09:57:46 -08:00
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 comment unused parameters to turn on -Wunused-parameter flag 2018-04-12 17:59:16 -07:00
README.md Add dual-license info to README.md 2018-03-06 12:43:51 -08:00
ROCKSDB_LITE.md Fix some typos in comments and docs. 2018-03-08 10:27:25 -08:00
src.mk Added support for SstFileManager to RocksJava 2018-04-06 21:26:32 -07:00
TARGETS Update buckifier and TARGETS 2018-03-30 14:26:53 -07:00
thirdparty.inc Make Windows dep switches compatible with other builds 2018-01-05 14:56:54 -08:00
USERS.md Added ProfaneDB 2017-11-19 10:11:44 -08:00
Vagrantfile Adding CentOS 7 Vagrantfile & build script 2018-02-26 15:27:17 -08:00
WINDOWS_PORT.md Commit both PR and internal code review changes 2015-07-07 16:58:20 -07:00

README.md

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.