A library that provides an embeddable, persistent key-value store for fast storage.
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Peter Dillinger 92639b93a6 Fix checkpoint file deletion race with avoid_unnecessary_blocking_io (#7369)
Summary:
https://github.com/facebook/rocksdb/issues/3341 guaranteed that upon return of `GetSortedWalFiles` after
`DisableFileDeletions`, all pending purges of previously obsolete WAL
files will have finished. However, the addition of
avoid_unnecessary_blocking_io in https://github.com/facebook/rocksdb/issues/5043 opened a hole in the code making
that assurance, which can lead to files to be copied for checkpoint or
backup going missing before being copied, with that option enabled.

This change patches the hole.

Pull Request resolved: https://github.com/facebook/rocksdb/pull/7369

Test Plan:
apparent fix to backups in crash test observed. Will work
on a unit test for another commit

Reviewed By: ajkr

Differential Revision: D23620258

Pulled By: pdillinger

fbshipit-source-id: bea36b461a5b719c3e3ef802f967bc3e8ae71614
2020-09-10 22:35:25 -07:00
.circleci Fix compile error for old gcc-4.8 (#7358) 2020-09-08 12:09:34 -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 New bit manipulation functions and 128-bit value library (#7338) 2020-09-03 09:32:59 -07:00
cache Add more tests to ASSERT_STATUS_CHECKED (#7211) 2020-08-06 17:19:41 -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 Fix checkpoint file deletion race with avoid_unnecessary_blocking_io (#7369) 2020-09-10 22:35:25 -07:00
db_stress_tool More backup/restore stress test fixes (#7361) 2020-09-09 11:19:05 -07:00
docs Update github-pages to v207 (#7235) 2020-08-12 09:26:24 -07:00
env Use FSRandomRWFilePtr Object to call underlying file system. (#7198) 2020-09-08 12:21:58 -07:00
examples Make examples work on Windows (#7304) 2020-09-01 18:03:50 -07:00
file Store FSWritableFilePtr object in WritableFileWriter (#7193) 2020-09-08 10:56:08 -07:00
hdfs fix build with 'USE_HDFS' on windows (#6950) 2020-06-12 16:21:50 -07:00
include/rocksdb Expose the start of the expiration range for TTL blob files through LiveFileMetaData (#7365) 2020-09-10 11:33:33 -07:00
java Implement Java API for ConcurrentTaskLimiter class and compaction_thread_limiter field in ColumnFamilyOptions (#7347) 2020-09-09 12:44:20 -07:00
logging Add EnvTestWithParam::OptionsTest to the ASSERT_STATUS_CHECKED passes (#7283) 2020-08-20 19:18:35 -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 Add a new stats level to exclude tickers (#7329) 2020-09-04 23:25:03 -07:00
options Add initial set of options for integrated blob write path (#7280) 2020-08-18 18:32:37 -07:00
port build fixes for GNU/kFreeBSD (#6992) 2020-06-18 09:51:28 -07:00
table Fix compile error for old gcc-4.8 (#7358) 2020-09-08 12:09:34 -07:00
test_util Fix backup/restore in stress/crash test (#7357) 2020-09-08 10:50:19 -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 Fix db_bench_tool_test. Fixes 7341 (#7344) 2020-09-09 09:07:16 -07:00
trace_replay Add some simulator cache and block tracer tests to ASSERT_STATUS_CHECKED (#7305) 2020-08-24 16:43:31 -07:00
util New bit manipulation functions and 128-bit value library (#7338) 2020-09-03 09:32:59 -07:00
utilities Expose the start of the expiration range for TTL blob files through LiveFileMetaData (#7365) 2020-09-10 11:33:33 -07:00
.clang-format A script that automatically reformat affected lines 2014-01-14 12:21:24 -08:00
.gitignore Generate and install a pkg-config file (#7244) 2020-08-17 11:53:11 -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 platform_dependent in Travis, rebalance groups (#7360) 2020-09-09 09:49:24 -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 tests need linked with third_party libs (#7351) 2020-09-09 09:02:34 -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 Fix checkpoint file deletion race with avoid_unnecessary_blocking_io (#7369) 2020-09-10 22:35:25 -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 Fix platform_dependent in Travis, rebalance groups (#7360) 2020-09-09 09:49:24 -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 Implement Java API for ConcurrentTaskLimiter class and compaction_thread_limiter field in ColumnFamilyOptions (#7347) 2020-09-09 12:44:20 -07:00
TARGETS Add buffer prefetch support for non directIO usecase (#7312) 2020-08-27 18:16:53 -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.