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Igor Canadi 9f1c80b556 Drop column family from write thread 
Summary: If we drop column family only from (single) write thread, we can be sure that nobody will drop the column family while we're writing (and our mutex is released). This greatly simplifies my patch that's getting rid of MakeRoomForWrite().

Test Plan: make check, but also running stress test

Reviewers: ljin, sdong

Reviewed By: sdong

Subscribers: leveldb

Differential Revision: https://reviews.facebook.net/D22965
2014-09-05 15:20:05 -07:00
build_tools Add db_bench with lots of column families to regression tests 2014-09-05 14:20:18 -07:00
coverage
db Drop column family from write thread 2014-09-05 15:20:05 -07:00
doc Remove seek compaction 2014-06-20 10:23:02 +02:00
examples Make it easier to start using RocksDB 2014-05-10 10:49:33 -07:00
hdfs hdfs cleanup and compile test against CDH 4.4. 2014-05-20 17:22:12 -04:00
helpers/memenv Expose in memory Env to the world 2014-04-14 12:28:15 -07:00
include fix more compile warnings 2014-09-05 14:14:37 +08:00
java Remove path with arena==nullptr from NewInternalIterator 2014-09-04 17:40:41 -07:00
linters
port generic rate limiter 2014-07-08 11:41:57 -07:00
table Fix compaction bug in Cuckoo Table Builder. Use kvs_.size() instead of num_entries in FileSize() method. 2014-09-05 11:18:01 -07:00
third-party/rapidjson Fix a rapidjson compile error in mac. 2014-06-23 17:09:24 -06:00
tools introduce ImmutableOptions 2014-09-04 16:18:36 -07:00
util fix more compile warnings 2014-09-05 14:14:37 +08:00
utilities fix more compile warnings 2014-09-05 14:14:37 +08:00
.arcconfig
.clang-format
.gitignore Changes to support unity build: 2014-08-11 13:22:47 -04:00
.travis.yml Fix travis builds 2014-09-04 10:23:45 -07:00
CONTRIBUTING.md facebook accounts are not required for CLA signers 2014-07-08 05:57:54 -04:00
HISTORY.md Add db_bench with lots of column families to regression tests 2014-09-05 14:20:18 -07:00
INSTALL.md specify the command to install build_tools/mac-install-gflags.sh file in doc 2014-06-17 17:03:21 -05:00
LICENSE Fix copyright year 2014-03-12 12:06:58 -07:00
Makefile Don't do memtable lookup in db_impl_readonly if memtables are empty while opening db. 2014-08-26 17:19:03 -07:00
PATENTS
README.md Update README.md 2014-06-23 15:58:54 -07:00
ROCKSDB_LITE.md RocksDBLite 2014-04-15 13:39:26 -07:00

README.md

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

Build Status

RocksDB is developed and maintained by Facebook Database Engineering Team. It is built on 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 specially 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/