A library that provides an embeddable, persistent key-value store for fast storage.
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Levi Tamasi 1f84611e5d Clean up BlobLogReader and rename it to BlobLogSequentialReader (#7517)
Summary:
The patch does some cleanup in and around the legacy `BlobLogReader` class:
* It renames the class to `BlobLogSequentialReader` to emphasize that it is for
sequentially iterating through blobs in a blob file, as opposed to doing random
point reads using `BlobIndex`es (which is `BlobFileReader`'s jurisdiction).
* It removes some dead code from the old BlobDB implementation that references
`BlobLogReader` (namely the method `BlobFile::OpenRandomAccessReader`).
* It cleans up some `#include`s and forward declarations.
* It fixes some incorrect/outdated comments related to the reader class.
* It adds a few assertions to the `Read` methods of the class.

Pull Request resolved: https://github.com/facebook/rocksdb/pull/7517

Test Plan: `make check`

Reviewed By: riversand963

Differential Revision: D24172611

Pulled By: ltamasi

fbshipit-source-id: 43e2ae1eba5c3dd30c1070cb00f217edc45bd64f
2020-10-07 17:48:16 -07:00
.circleci Fix MSVC-related build issues (#7439) 2020-10-01 09:23:04 -07:00
.github/workflows Clean up some code related to file checksums (#6861) 2020-05-21 08:12:51 -07:00
buckifier Add a rocksdb lib target with link_whole=True (#7466) 2020-09-30 22:50:32 -07:00
build_tools New bit manipulation functions and 128-bit value library (#7338) 2020-09-03 09:32:59 -07:00
cache Genericize and clean up FastRange (#7436) 2020-09-28 11:35:00 -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 up BlobLogReader and rename it to BlobLogSequentialReader (#7517) 2020-10-07 17:48:16 -07:00
db_stress_tool Stress test to support paranoid_file_checks (#7473) 2020-09-30 14:41:33 -07:00
docs Update github-pages to v207 (#7235) 2020-08-12 09:26:24 -07:00
env Flush info log for warning and higher severity (#7462) 2020-09-29 16:06:14 -07:00
examples Bring the Configurable options together (#5753) 2020-09-14 17:01:01 -07:00
file Avoid to suppress status code in ~BlockBasedTableBuilder (#7507) 2020-10-05 14:58:49 -07:00
hdfs fix build with 'USE_HDFS' on windows (#6950) 2020-06-12 16:21:50 -07:00
include/rocksdb Add Stats for MultiGet (#7366) 2020-10-07 13:28:48 -07:00
java Add Stats for MultiGet (#7366) 2020-10-07 13:28:48 -07:00
logging Add more tests to ASSERT_STATUS_CHECKED (#7367) 2020-09-16 15:48:07 -07:00
memory C++20 compatibility (#6697) 2020-04-20 13:24:25 -07:00
memtable Genericize and clean up FastRange (#7436) 2020-09-28 11:35:00 -07:00
monitoring Add Stats for MultiGet (#7366) 2020-10-07 13:28:48 -07:00
options Introduce options.check_flush_compaction_key_order (#7467) 2020-10-01 10:10:26 -07:00
port Fix MSVC-related build issues (#7439) 2020-10-01 09:23:04 -07:00
table Add Stats for MultiGet (#7366) 2020-10-07 13:28:48 -07:00
test_util Fix/minimize mock_time_env.h dependencies (#7426) 2020-09-23 11:34:48 -07:00
third-party Fix MSVC-related build issues (#7439) 2020-10-01 09:23:04 -07:00
tools Add trace_analyzer_test to ASSERT_STATUS_CHECKED list (#7480) 2020-10-01 15:58:52 -07:00
trace_replay Genericize and clean up FastRange (#7436) 2020-09-28 11:35:00 -07:00
util Fix wrong comments about function TruncateToPageBoundary. (#6975) 2020-10-07 12:34:34 -07:00
utilities Clean up BlobLogReader and rename it to BlobLogSequentialReader (#7517) 2020-10-07 17:48:16 -07:00
.clang-format A script that automatically reformat affected lines 2014-01-14 12:21:24 -08:00
.gitignore Re-add extra compiler flags when building unittests (#7437) 2020-09-25 16:44:43 -07:00
.lgtm.yml Create lgtm.yml for LGTM.com C/C++ analysis (#4058) 2018-06-26 12:43:04 -07:00
.travis.yml Update Travis config for broken snapd on ppc (#7381) 2020-09-14 14:23:13 -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 Clean up BlobLogReader and rename it to BlobLogSequentialReader (#7517) 2020-10-07 17:48:16 -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 Stats for MultiGet (#7366) 2020-10-07 13:28:48 -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 Introduce a blob file reader class (#7461) 2020-10-07 15:44:53 -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 Clean up BlobLogReader and rename it to BlobLogSequentialReader (#7517) 2020-10-07 17:48:16 -07:00
TARGETS Clean up BlobLogReader and rename it to BlobLogSequentialReader (#7517) 2020-10-07 17:48:16 -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.