Yueh-Hsuan Chiang 6cbffd50d0 Enable testing CompactFiles in db_stress
Summary:
Enable testing CompactFiles in db_stress by adding flag test_compact_files
to db_stress.

Test Plan:
./db_stress --test_compact_files=1 --compaction_style=0 --allow_concurrent_memtable_write=false --ops_per_thread=100000
./db_stress --test_compact_files=1 --compaction_style=1 --allow_concurrent_memtable_write=false --ops_per_thread=100000

Sample output (note that it's normal to have some CompactFiles() failed):
    Stress Test : 491.891 micros/op 65054 ops/sec
                : Wrote 21.98 MB (0.45 MB/sec) (45% of 3200352 ops)
                : Wrote 1440728 times
                : Deleted 441616 times
                : Single deleted 38181 times
                : 319251 read and 19025 found the key
                : Prefix scanned 640520 times
                : Iterator size sum is 9691415
                : Iterated 319704 times
                : Got errors 0 times
                : 1323 CompactFiles() succeed
                : 32 CompactFiles() failed
    2016/04/11-15:50:58  Verification successful

Reviewers: sdong, IslamAbdelRahman, kradhakrishnan, yiwu, andrewkr

Reviewed By: andrewkr

Subscribers: andrewkr, dhruba, leveldb

Differential Revision: https://reviews.facebook.net/D56565
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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 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/

Description
A library that provides an embeddable, persistent key-value store for fast storage.
Readme 271 MiB
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