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Richard Cairns Jr f6e404c20a Added "number of merge operands" to statistics in ssts.
Summary:
A couple of notes from the diff:
  - The namespace block I added at the top of table_properties_collector.cc was in reaction to an issue i was having with PutVarint64 and reusing the "val" string.  I'm not sure this is the cleanest way of doing this, but abstracting this out at least results in the correct behavior.
  - I chose "rocksdb.merge.operands" as the property name.  I am open to suggestions for better names.
  - The change to sst_dump_tool.cc seems a bit inelegant to me.  Is there a better way to do the if-else block?

Test Plan:
I added a test case in table_properties_collector_test.cc.  It adds two merge operands and checks to make sure that both of them are reflected by GetMergeOperands.  It also checks to make sure the wasPropertyPresent bool is properly set in the method.

Running both of these tests should pass:
./table_properties_collector_test
./sst_dump_test

Reviewers: IslamAbdelRahman

Reviewed By: IslamAbdelRahman

Subscribers: andrewkr, dhruba

Differential Revision: https://reviews.facebook.net/D58119
2016-05-19 14:24:48 -07:00
arcanist_util Have sandcastle run lite_test for every diff 2016-05-06 14:51:20 -07:00
build_tools Have sandcastle run lite_test for every diff 2016-05-06 14:51:20 -07:00
coverage Fix coverage script 2014-11-03 14:53:00 -08:00
db Added "number of merge operands" to statistics in ssts. 2016-05-19 14:24:48 -07:00
doc Lint everything 2015-11-16 12:56:21 -08:00
examples Adding pin_l0_filter_and_index_blocks_in_cache feature and related fixes. 2016-04-01 10:42:39 -07:00
hdfs using java7 in runtime for hdfs env (#1072) 2016-04-12 00:08:26 -04:00
include/rocksdb Added "number of merge operands" to statistics in ssts. 2016-05-19 14:24:48 -07:00
java Java API - Add missing HEADER_LEVEL logging (#1104) 2016-05-06 15:06:12 -07:00
memtable Updated all copyright headers to the new format. 2016-02-09 15:12:00 -08:00
port Fix build issue. (#1123) 2016-05-16 17:01:00 -07:00
table [rocksdb] make more options dynamic 2016-05-17 13:11:56 -07:00
third-party Fix the build break on Ubuntu 15.10 when gcc 5.2.1 is used 2016-03-15 10:30:10 -07:00
tools Added "number of merge operands" to statistics in ssts. 2016-05-19 14:24:48 -07:00
util Add GetStringFromCompressionType to include/rocksdb/convenience.h 2016-05-18 15:03:21 -07:00
utilities Fix build 2016-05-18 00:41:14 -07:00
.arcconfig Integrate Jenkins with Phabricator 2015-04-07 11:56:29 -07:00
.clang-format A script that automatically reformat affected lines 2014-01-14 12:21:24 -08:00
.gitignore Ignore db_test2 2016-03-07 15:56:16 -08:00
.travis.yml Split Travis unittests Job 2016-04-13 14:22:29 -07:00
appveyor.yml Disable long running GroupCommitTest (#1125) 2016-05-19 10:29:49 -07:00
AUTHORS Add AUTHORS file. Fix #203 2014-09-29 10:52:18 -07:00
CMakeLists.txt Fix build issue. (#1123) 2016-05-16 17:01:00 -07:00
CONTRIBUTING.md facebook accounts are not required for CLA signers 2014-07-08 05:57:54 -04:00
DEFAULT_OPTIONS_HISTORY.md Release RocksDB 4.8.0 2016-05-02 14:38:04 -07:00
DUMP_FORMAT.md First version of rocksdb_dump and rocksdb_undump. 2015-06-19 16:24:36 -07:00
HISTORY.md Fix formatting of HISTORY.md (#1126) 2016-05-19 10:56:12 -07:00
INSTALL.md Simple changes to support builds for ppc64[le] consistent with X86 2016-01-19 09:08:19 -06:00
LANGUAGE-BINDINGS.md Merge pull request #1056 from facebook/igorcanadi-patch-1 2016-04-04 08:08:52 -07:00
LICENSE Updated all copyright headers to the new format. 2016-02-09 15:12:00 -08:00
Makefile Move IO failure test to separate file 2016-05-18 17:09:20 -07:00
PATENTS Update Patent Grant. 2015-04-13 10:33:43 +01:00
README.md Replaced "built on on earlier work" by "built on earlier work" in README.md 2014-09-17 01:16:17 -07:00
ROCKSDB_LITE.md Optimistic Transactions 2015-05-29 14:36:35 -07:00
src.mk Move IO failure test to separate file 2016-05-18 17:09:20 -07:00
thirdparty.inc Introduce XPRESS compresssion on Windows. (#1081) 2016-04-19 22:54:24 -07:00
USERS.md Update USERS.md with link to LinkedIn blog post (#1088) 2016-04-22 15:53:32 -07:00
Vagrantfile RocksDB on FreeBSD support 2015-02-26 15:19:17 -08:00
WINDOWS_PORT.md Commit both PR and internal code review changes 2015-07-07 16:58:20 -07:00

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/