A library that provides an embeddable, persistent key-value store for fast storage.
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Cheng Chang 96ce0470a7 Clean snapshot dir before taking snapshot (#7156)
Summary:
`DBTest::SnapshotFiles` runs the tests in a `while` loop.
Currently, the snapshot directory is not cleaned up in each loop, so previous snapshot files may remain in the next loop's snapshot.
When I'm working on https://github.com/facebook/rocksdb/pull/7129, when checking the tracked WALs in MANIFEST, I find that this test always fails because it reads some unknown WAL. It turns out that the unknown WAL is left from previous loops.

Pull Request resolved: https://github.com/facebook/rocksdb/pull/7156

Test Plan: make db_test && ./db_test --gtest_filters=*SnapshotFiles

Reviewed By: siying

Differential Revision: D22668360

Pulled By: cheng-chang

fbshipit-source-id: 69d4aa3506038ba30e218e8ae966357935a99c6c
2020-07-22 13:54:01 -07:00
.circleci Exclude two tests in CircleCI TSAN tests (#7152) 2020-07-20 15:01:17 -07:00
.github/workflows Clean up some code related to file checksums (#6861) 2020-05-21 08:12:51 -07:00
buckifier Exclude c_test from buck build opt mode (#7093) 2020-07-07 11:28:22 -07:00
build_tools Use Libraries in the RocksDB Makefile Build (#6660) 2020-06-30 19:33:31 -07:00
cache Revert "Update googletest from 1.8.1 to 1.10.0 (#6808)" (#6923) 2020-06-03 15:55:03 -07:00
cmake Add find_dependency() in cmake config file. (#6791) 2020-05-12 21:18:29 -07:00
coverage Find the correct gcov (#6904) 2020-06-01 16:33:05 -07:00
db Clean snapshot dir before taking snapshot (#7156) 2020-07-22 13:54:01 -07:00
db_stress_tool Add stress test for GetProperty (#7111) 2020-07-14 12:12:36 -07:00
docs remediation of S205607 2020-07-17 17:20:49 -07:00
env Add FileSystem wrapper classes for IO tracing. (#7002) 2020-07-13 16:36:55 -07:00
examples add WITH_EXAMPLES options to cmake and cleanups. (#6580) 2020-06-18 18:00:04 -07:00
file Use steady_clock instead of system_clock in FileOperationInfo::TimePoint (#7153) 2020-07-22 08:55:02 -07:00
hdfs fix build with 'USE_HDFS' on windows (#6950) 2020-06-12 16:21:50 -07:00
include/rocksdb Add hash of key/value checks when paranoid_file_checks=true (#7134) 2020-07-22 11:04:40 -07:00
java Align RocksJava BlockBasedTableOptions with C++ API (#7088) 2020-07-10 14:32:58 -07:00
logging Fix info log source file display length (#5824) 2020-04-08 20:18:08 -07:00
memory C++20 compatibility (#6697) 2020-04-20 13:24:25 -07:00
memtable More Makefile Cleanup (#7097) 2020-07-09 14:35:17 -07:00
monitoring Replace reinterpret_cast with static_cast_with_check (#7067) 2020-07-02 19:25:41 -07:00
options Add Support for saving CompressionOptions to Options File (#6817) 2020-07-16 19:06:31 -07:00
port build fixes for GNU/kFreeBSD (#6992) 2020-06-18 09:51:28 -07:00
table Add hash of key/value checks when paranoid_file_checks=true (#7134) 2020-07-22 11:04:40 -07:00
test_util More Makefile Cleanup (#7097) 2020-07-09 14:35:17 -07:00
third-party Revert "Update googletest from 1.8.1 to 1.10.0 (#6808)" (#6923) 2020-06-03 15:55:03 -07:00
tools remediation of S205607 2020-07-17 17:20:49 -07:00
trace_replay Add FileSystem wrapper classes for IO tracing. (#7002) 2020-07-13 16:36:55 -07:00
util Fix typo in ThreadData comment (#7131) 2020-07-15 09:23:23 -07:00
utilities BackupEngine computes table checksums only once if db session ids are available (#7110) 2020-07-21 10:35:40 -07:00
.clang-format A script that automatically reformat affected lines 2014-01-14 12:21:24 -08:00
.gitignore Allow missing "unversioned" python, as in CentOS 8 (#6883) 2020-05-29 11:29:23 -07:00
.lgtm.yml Create lgtm.yml for LGTM.com C/C++ analysis (#4058) 2018-06-26 12:43:04 -07:00
.travis.yml More Makefile clean-up (#7066) 2020-07-06 11:19:48 -07:00
.watchmanconfig Added .watchmanconfig file to rocksdb repo (#5593) 2019-07-19 15:00:33 -07:00
appveyor.yml Remove 2019 from appveyor (#7038) 2020-06-29 14:31:41 -07:00
AUTHORS Update RocksDB Authors File 2017-10-18 14:42:10 -07:00
CMakeLists.txt More Makefile Cleanup (#7097) 2020-07-09 14:35:17 -07:00
CODE_OF_CONDUCT.md Adopt Contributor Covenant 2019-08-29 23:21:01 -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
DEFAULT_OPTIONS_HISTORY.md options.delayed_write_rate use the rate of rate_limiter by default. 2017-05-24 09:58:24 -07:00
defs.bzl Make testpilot recognize that these tests have coverage instrumentation 2020-03-20 11:23:23 -07:00
DUMP_FORMAT.md First version of rocksdb_dump and rocksdb_undump. 2015-06-19 16:24:36 -07:00
HISTORY.md Add hash of key/value checks when paranoid_file_checks=true (#7134) 2020-07-22 11:04:40 -07:00
INSTALL.md Update the version of the dependencies used by the RocksJava static build (#4761) 2018-12-18 20:25:43 -08:00
issue_template.md Add Google Group to Issue Template 2020-01-28 14:40:37 -08:00
LANGUAGE-BINDINGS.md Add RestoreDBFromLatestBackup to C API, add new C# package (#7092) 2020-07-08 11:56:41 -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 Exclude two tests in CircleCI TSAN tests (#7152) 2020-07-20 15:01:17 -07:00
README.md Add CircleCI gadget (#7028) 2020-06-25 10:30:33 -07:00
ROCKSDB_LITE.md Fix some typos in comments and docs. 2018-03-08 10:27:25 -08:00
src.mk Add FileSystem wrapper classes for IO tracing. (#7002) 2020-07-13 16:36:55 -07:00
TARGETS Exclude two tests in CircleCI TSAN tests (#7152) 2020-07-20 15:01:17 -07:00
thirdparty.inc Fix build jemalloc api (#5470) 2019-06-24 17:40:32 -07:00
USERS.md Add YugabyteDB to USERS (#6786) 2020-05-06 10:28:29 -07:00
Vagrantfile Adding CentOS 7 Vagrantfile & build script 2018-02-26 15:27:17 -08:00
WINDOWS_PORT.md #5145 , rename port/dirent.h to port/port_dirent.h to avoid compile err when use port dir as header dir output (#5152) 2019-04-04 11:38:19 -07:00

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/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/ and https://rocksdb.slack.com/

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.