A library that provides an embeddable, persistent key-value store for fast storage.
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Zheng Shao c28097538a manifest_dump: Add --hex=1 option
Summary: Without this option, manifest_dump does not print binary keys for files in a human-readable way.

Test Plan:
./manifest_dump --hex=1 --verbose=0 --file=/data/users/zshao/fdb_comparison/leveldb/fbobj.apprequest-0_0_original/MANIFEST-000002
manifest_file_number 589 next_file_number 590 last_sequence 2311567 log_number 543  prev_log_number 0
--- level 0 --- version# 0 ---
 532:1300357['0000455BABE20000' @ 2183973 : 1 .. 'FFFCA5D7ADE20000' @ 2184254 : 1]
 536:1308170['000198C75CE30000' @ 2203313 : 1 .. 'FFFCF94A79E30000' @ 2206463 : 1]
 542:1321644['0002931AA5E50000' @ 2267055 : 1 .. 'FFF77B31C5E50000' @ 2270754 : 1]
 544:1286390['000410A309E60000' @ 2278592 : 1 .. 'FFFE470A73E60000' @ 2289221 : 1]
 538:1298778['0006BCF4D8E30000' @ 2217050 : 1 .. 'FFFD77DAF7E30000' @ 2220489 : 1]
 540:1282353['00090D5356E40000' @ 2231156 : 1 .. 'FFFFF4625CE40000' @ 2231969 : 1]
--- level 1 --- version# 0 ---
 510:2112325['000007F9C2D40000' @ 1782099 : 1 .. '146F5B67B8D80000' @ 1905458 : 1]
 511:2121742['146F8A3023D60000' @ 1824388 : 1 .. '28BC8FBB9CD40000' @ 1777993 : 1]
 512:801631['28BCD396F1DE0000' @ 2080191 : 1 .. '3082DBE9ADDB0000' @ 1989927 : 1]

Reviewers: dhruba, sheki, emayanke

Reviewed By: dhruba

CC: leveldb

Differential Revision: https://reviews.facebook.net/D7425
2012-12-16 08:58:28 -08:00
db manifest_dump: Add --hex=1 option 2012-12-16 08:58:28 -08:00
doc merge 1.5 2012-08-28 11:43:33 -07:00
hdfs Move WAL files to archive directory, instead of deleting. 2012-11-28 17:28:08 -08:00
helpers/memenv Move WAL files to archive directory, instead of deleting. 2012-11-28 17:28:08 -08:00
include/leveldb manifest_dump: Add --hex=1 option 2012-12-16 08:58:28 -08:00
java Make Java Client compilable. 2012-12-12 14:07:52 -08:00
linters/src fixing linters. 2012-12-14 14:05:27 -08:00
port Make compression options configurable. These include window-bits, level and strategy for ZlibCompression 2012-11-02 11:26:39 -07:00
scribe fix db_test error with scribe logger turned on 2012-08-28 11:22:58 -07:00
snappy Build with gcc-4.7.1-glibc-2.14.1. 2012-09-17 10:56:26 -07:00
table Metrics: record compaction drop's and bloom filter effectiveness 2012-11-09 11:38:45 -08:00
thrift Implement RowLocks for assoc schema 2012-10-03 23:19:01 -07:00
tools manifest_dump: Add --hex=1 option 2012-12-16 08:58:28 -08:00
util Fix a race condition while processing tasks by background threads. 2012-12-09 17:15:27 -08:00
.arcconfig fixing linters. 2012-12-14 14:05:27 -08:00
.gitignore fixing linters. 2012-12-14 14:05:27 -08:00
AUTHORS reverting disastrous MOE commit, returning to r21 2011-04-19 23:11:15 +00:00
build_detect_platform Fix ldb segfault and use static libsnappy for all builds 2012-11-21 11:07:19 -08:00
build_detect_version Record the version of the source repository that was used to build the leveldb library. 2012-08-24 15:18:43 -07:00
build_java.sh Make Java Client compilable. 2012-12-12 14:07:52 -08:00
fbcode.gcc471.sh Fix ldb segfault and use static libsnappy for all builds 2012-11-21 11:07:19 -08:00
LICENSE reverting disastrous MOE commit, returning to r21 2011-04-19 23:11:15 +00:00
Makefile Fix all warnings generated by -Wall option to the compiler. 2012-11-06 14:07:31 -08:00
NEWS sync with upstream @ 21409451 2011-05-21 02:17:43 +00:00
README rocksdb README file. 2012-11-29 22:39:08 -08:00
README.fb Release 1.5.6.fb 2012-11-28 16:09:41 -08:00
TODO A number of smaller fixes and performance improvements: 2011-06-22 02:36:45 +00:00

rocksdb: A persistent key-value store for flash storage
Authors: The Facebook Database Engineering Team

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 an Log-Stuctured-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.

The core of this code has been derived from open-source leveldb.

leveldb: A key-value store
Authors: Sanjay Ghemawat (sanjay@google.com) and Jeff Dean (jeff@google.com)

The code under this directory implements a system for maintaining a
persistent key/value store.

See doc/index.html for more explanation.
See doc/impl.html for a brief overview of the implementation.

The public interface is in include/*.h.  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.

Guide to header files:

include/db.h
    Main interface to the DB: Start here

include/options.h
    Control over the behavior of an entire database, and also
    control over the behavior of individual reads and writes.

include/comparator.h
    Abstraction for user-specified comparison function.  If you want
    just bytewise comparison of keys, you can use the default comparator,
    but clients can write their own comparator implementations if they
    want custom ordering (e.g. to handle different character
    encodings, etc.)

include/iterator.h
    Interface for iterating over data. You can get an iterator
    from a DB object.

include/write_batch.h
    Interface for atomically applying multiple updates to a database.

include/slice.h
    A simple module for maintaining a pointer and a length into some
    other byte array.

include/status.h
    Status is returned from many of the public interfaces and is used
    to report success and various kinds of errors.

include/env.h
    Abstraction of the OS environment.  A posix implementation of
    this interface is in util/env_posix.cc

include/table.h
include/table_builder.h
    Lower-level modules that most clients probably won't use directly