A library that provides an embeddable, persistent key-value store for fast storage.
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Levi Tamasi 6f62322fe4 Add blob files to VersionStorageInfo/VersionBuilder (#6597)
Summary:
The patch adds a couple of classes to represent metadata about
blob files: `SharedBlobFileMetaData` contains the information elements
that are immutable (once the blob file is closed), e.g. blob file number,
total number and size of blob files, checksum method/value, while
`BlobFileMetaData` contains attributes that can vary across versions like
the amount of garbage in the file. There is a single `SharedBlobFileMetaData`
for each blob file, which is jointly owned by the `BlobFileMetaData` objects
that point to it; `BlobFileMetaData` objects, in turn, are owned by `Version`s
and can also be shared if the (immutable _and_ mutable) state of the blob file
is the same in two versions.

In addition, the patch adds the blob file metadata to `VersionStorageInfo`, and extends
`VersionBuilder` so that it can apply blob file related `VersionEdit`s (i.e. those
containing `BlobFileAddition`s and/or `BlobFileGarbage`), and save blob file metadata
to a new `VersionStorageInfo`. Consistency checks are also extended to ensure
that table files point to blob files that are part of the `Version`, and that all blob files
that are part of any given `Version` have at least some _non_-garbage data in them.
Pull Request resolved: https://github.com/facebook/rocksdb/pull/6597

Test Plan: `make check`

Reviewed By: riversand963

Differential Revision: D20656803

Pulled By: ltamasi

fbshipit-source-id: f1f74d135045b3b42d0146f03ee576ef0a4bfd80
2020-03-26 18:51:53 -07:00
.circleci Migrate AppVeyor to CircleCI (#6518) 2020-03-13 21:58:51 -07:00
buckifier Buck config: Re-enable liburing under Linux (#6451) 2020-02-24 15:47:34 -08:00
build_tools Force Java version on Travis CI (#6512) 2020-03-12 12:24:51 -07:00
cache Use function objects as deleters in the block cache (#6545) 2020-03-26 16:19:58 -07:00
cmake cmake: do not build tests for Release build and cleanups (#5916) 2019-12-13 12:48:06 -08:00
coverage Update a few scripts to be python3 compatible (#6525) 2020-03-24 21:00:27 -07:00
db Add blob files to VersionStorageInfo/VersionBuilder (#6597) 2020-03-26 18:51:53 -07:00
db_stress_tool Remove GetSortedWalFiles/GetCurrentWalFile from the crash test (#6491) 2020-03-18 17:14:15 -07:00
docs Log warning for high bits/key in legacy Bloom filter (#6312) 2020-01-17 19:37:35 -08:00
env Simplify migration to FileSystem API (#6552) 2020-03-23 21:54:21 -07:00
examples Use DestroyColumnFamilyHandle instead of directly deleting column family handle (#6505) 2020-03-12 14:30:46 -07:00
file Create a thread in DeleteScheduler only when rate limit enabled (#6564) 2020-03-24 11:29:51 -07:00
hdfs Replace namespace name "rocksdb" with ROCKSDB_NAMESPACE (#6433) 2020-02-20 12:09:57 -08:00
include/rocksdb Use function objects as deleters in the block cache (#6545) 2020-03-26 16:19:58 -07:00
java Use an Amazon S3 bucket for downloading deps (#6526) 2020-03-13 13:39:03 -07:00
logging Replace namespace name "rocksdb" with ROCKSDB_NAMESPACE (#6433) 2020-02-20 12:09:57 -08:00
memory Replace namespace name "rocksdb" with ROCKSDB_NAMESPACE (#6433) 2020-02-20 12:09:57 -08:00
memtable Replace namespace name "rocksdb" with ROCKSDB_NAMESPACE (#6433) 2020-02-20 12:09:57 -08:00
monitoring Replace namespace name "rocksdb" with ROCKSDB_NAMESPACE (#6433) 2020-02-20 12:09:57 -08:00
options Simplify migration to FileSystem API (#6552) 2020-03-23 21:54:21 -07:00
port Support direct IO in RandomAccessFileReader::MultiRead (#6446) 2020-03-20 16:33:26 -07:00
table Use function objects as deleters in the block cache (#6545) 2020-03-26 16:19:58 -07:00
test_util Simplify migration to FileSystem API (#6552) 2020-03-23 21:54:21 -07:00
third-party Disable distributed mutex test for valgrind_test (#6553) 2020-03-18 09:24:31 -07:00
tools Re-update check_format_compatible.sh for default format_version=4 (#6598) 2020-03-26 10:11:09 -07:00
trace_replay Replace namespace name "rocksdb" with ROCKSDB_NAMESPACE (#6433) 2020-02-20 12:09:57 -08:00
util CompactRange() to use bottom pool when goes to bottommost level (#6593) 2020-03-24 20:24:32 -07:00
utilities Use function objects as deleters in the block cache (#6545) 2020-03-26 16:19:58 -07:00
.clang-format
.gitignore Separate timestamp related test from db_basic_test (#6516) 2020-03-13 11:37:15 -07:00
.lgtm.yml Create lgtm.yml for LGTM.com C/C++ analysis (#4058) 2018-06-26 12:43:04 -07:00
.travis.yml Exclude more Travis builds for each pull request (#6557) 2020-03-20 13:20:19 -07:00
.watchmanconfig Added .watchmanconfig file to rocksdb repo (#5593) 2019-07-19 15:00:33 -07:00
appveyor.yml Separate timestamp related test from db_basic_test (#6516) 2020-03-13 11:37:15 -07:00
AUTHORS Update RocksDB Authors File 2017-10-18 14:42:10 -07:00
CMakeLists.txt Add blob files to VersionStorageInfo/VersionBuilder (#6597) 2020-03-26 18:51:53 -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
HISTORY.md Update default BBTO::format_version from 2 to 4 (#6582) 2020-03-24 21:22:21 -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 LANGUAGE-BINDINGS.md: mention python-rocksdb 2019-03-20 11:10:48 -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 Update a few scripts to be python3 compatible (#6525) 2020-03-24 21:00:27 -07:00
README.md Replaced some words (#5877) 2019-10-07 12:28:09 -07:00
ROCKSDB_LITE.md Fix some typos in comments and docs. 2018-03-08 10:27:25 -08:00
src.mk Add blob files to VersionStorageInfo/VersionBuilder (#6597) 2020-03-26 18:51:53 -07:00
TARGETS Add blob files to VersionStorageInfo/VersionBuilder (#6597) 2020-03-26 18:51:53 -07:00
thirdparty.inc Fix build jemalloc api (#5470) 2019-06-24 17:40:32 -07:00
USERS.md add user nebula (#6271) 2020-01-08 13:46:43 -08:00
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

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 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/

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.