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A library that provides an embeddable, persistent key-value store for fast storage.
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anand76 e015206dd6 Fix crash due to MultiGet async IO and direct IO (#10024) 
Summary:
MultiGet with async IO is not officially supported with Posix yet. Avoid a crash by using synchronous MultiRead when direct IO is enabled.

Pull Request resolved: https://github.com/facebook/rocksdb/pull/10024

Test Plan: Run db_crashtest.py manually

Reviewed By: akankshamahajan15

Differential Revision: D36551053

Pulled By: anand1976

fbshipit-source-id: 72190418fa92dd0397e87825df618b12c9bdecda
2022-05-20 12:38:21 -07:00
.circleci Remove slack CircleCI hook (#9982) 2022-05-11 13:17:21 -07:00
.github/workflows Use released clang-format instead of the one from dev branch (#9646) 2022-03-01 10:51:38 -08:00
buckifier Multi file concurrency in MultiGet using coroutines and async IO (#9968) 2022-05-19 15:36:27 -07:00
build_tools Multi file concurrency in MultiGet using coroutines and async IO (#9968) 2022-05-19 15:36:27 -07:00
cache Remove own ToString() (#9955) 2022-05-06 13:03:58 -07:00
cmake gcc-11 and cmake related cleanup (#9286) 2021-12-17 17:04:35 -08:00
coverage Fix commit_prereq and other targets (#9797) 2022-04-04 09:58:18 -07:00
db Fix crash due to MultiGet async IO and direct IO (#10024) 2022-05-20 12:38:21 -07:00
db_stress_tool Support using ZDICT_finalizeDictionary to generate zstd dictionary (#9857) 2022-05-20 12:09:09 -07:00
docs Bump nokogiri from 1.13.4 to 1.13.6 in /docs (#10019) 2022-05-20 11:00:15 -07:00
env Use STATIC_AVOID_DESTRUCTION for static objects with non-trivial destructors (#9958) 2022-05-17 09:39:22 -07:00
examples Remove BlockBasedTableOptions.hash_index_allow_collision (#9454) 2022-03-01 13:58:02 -08:00
file Address comments for PR #9988 and #9996 (#10020) 2022-05-19 15:23:53 -07:00
fuzz Fix compilation errors and add fuzzers to CircleCI (#9420) 2022-02-01 10:32:15 -08:00
include/rocksdb Support using ZDICT_finalizeDictionary to generate zstd dictionary (#9857) 2022-05-20 12:09:09 -07:00
java Support using ZDICT_finalizeDictionary to generate zstd dictionary (#9857) 2022-05-20 12:09:09 -07:00
logging Use system-wide thread ID in info log lines (#9164) 2021-11-12 19:46:06 -08:00
memory Remove ROCKSDB_SUPPORT_THREAD_LOCAL define because it's a part of C++11 (#10015) 2022-05-18 15:25:19 -07:00
memtable Rewrite memory-charging feature's option API (#9926) 2022-05-17 15:01:51 -07:00
microbench Add microbenchmarks for DB::GetMergeOperands() (#9971) 2022-05-09 15:17:19 -07:00
monitoring Multi file concurrency in MultiGet using coroutines and async IO (#9968) 2022-05-19 15:36:27 -07:00
options Support using ZDICT_finalizeDictionary to generate zstd dictionary (#9857) 2022-05-20 12:09:09 -07:00
plugin Add initial CMake support to plugin (#9214) 2021-11-30 17:16:53 -08:00
port Remove ROCKSDB_SUPPORT_THREAD_LOCAL define because it's a part of C++11 (#10015) 2022-05-18 15:25:19 -07:00
table Fix crash due to MultiGet async IO and direct IO (#10024) 2022-05-20 12:38:21 -07:00
test_util Track SST unique id in MANIFEST and verify (#9990) 2022-05-19 11:04:21 -07:00
third-party Meta-internal folly integration with F14FastMap (#9546) 2022-04-13 07:34:01 -07:00
tools Support using ZDICT_finalizeDictionary to generate zstd dictionary (#9857) 2022-05-20 12:09:09 -07:00
trace_replay Use std::numeric_limits<> (#9954) 2022-05-05 13:08:21 -07:00
util Support using ZDICT_finalizeDictionary to generate zstd dictionary (#9857) 2022-05-20 12:09:09 -07:00
utilities fix: build on risc-v (#9215) 2022-05-17 17:33:01 -07:00
.clang-format A script that automatically reformat affected lines 2014-01-14 12:21:24 -08:00
.gitignore Add timestamp support to DBImplReadOnly (#10004) 2022-05-19 18:39:41 -07:00
.lgtm.yml Create lgtm.yml for LGTM.com C/C++ analysis (#4058) 2018-06-26 12:43:04 -07:00
.travis.yml Fix remaining uses of "backupable" (#9792) 2022-04-05 09:52:33 -07:00
.watchmanconfig Added .watchmanconfig file to rocksdb repo (#5593) 2019-07-19 15:00:33 -07:00
AUTHORS Update RocksDB Authors File 2017-10-18 14:42:10 -07:00
CMakeLists.txt Add timestamp support to DBImplReadOnly (#10004) 2022-05-19 18:39:41 -07:00
CODE_OF_CONDUCT.md Adopt Contributor Covenant 2019-08-29 23:21:01 -07:00
common.mk Clean up variables for temporary directory (#9961) 2022-05-06 16:38:06 -07:00
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
crash_test.mk Clean up variables for temporary directory (#9961) 2022-05-06 16:38:06 -07:00
DEFAULT_OPTIONS_HISTORY.md Add Options::DisableExtraChecks, clarify force_consistency_checks (#9363) 2022-01-18 17:31:03 -08:00
DUMP_FORMAT.md First version of rocksdb_dump and rocksdb_undump. 2015-06-19 16:24:36 -07:00
HISTORY.md Support using ZDICT_finalizeDictionary to generate zstd dictionary (#9857) 2022-05-20 12:09:09 -07:00
INSTALL.md Update supported VS versions in INSTALL.md (#9823) 2022-04-13 13:03:40 -07:00
issue_template.md Add Google Group to Issue Template 2020-01-28 14:40:37 -08:00
LANGUAGE-BINDINGS.md Update branch name to "main" in README/LANGUAGE_BINDINGS (#8727) 2021-09-01 15:26:34 -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 Add timestamp support to DBImplReadOnly (#10004) 2022-05-19 18:39:41 -07:00
PLUGINS.md Add pmem-rocksdb-plugin link in PLUGINs.md (#9934) 2022-05-12 22:02:28 -07:00
README.md README: De-list slack channel, list Google group (#9387) 2022-01-18 08:19:48 -08:00
ROCKSDB_LITE.md Fix remaining uses of "backupable" (#9792) 2022-04-05 09:52:33 -07:00
rocksdb.pc.in Generate pkg-config file via CMake (#9945) 2022-05-05 09:03:31 -07:00
src.mk Add timestamp support to DBImplReadOnly (#10004) 2022-05-19 18:39:41 -07:00
TARGETS Add timestamp support to DBImplReadOnly (#10004) 2022-05-19 18:39:41 -07:00
thirdparty.inc Fix build jemalloc api (#5470) 2019-06-24 17:40:32 -07:00
USERS.md Add Solana's RocksDB use case in USERS.md (#9558) 2022-02-16 09:23:01 -08:00
Vagrantfile Adding CentOS 7 Vagrantfile & build script 2018-02-26 15:27:17 -08:00
WINDOWS_PORT.md Update branch name in WINDOWS_PORT.md (#8745) 2021-09-01 19:26:39 -07:00

README.md

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

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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 especially suitable for storing multiple terabytes of data in a single database.

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

Questions and discussions are welcome on the RocksDB Developers Public Facebook group and email list on Google Groups.

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.