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From "Hadoop QA (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HBASE-5915) Improve performance of KeyValue comparison
Date Wed, 02 May 2012 19:06:51 GMT

    [ https://issues.apache.org/jira/browse/HBASE-5915?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13266823#comment-13266823
] 

Hadoop QA commented on HBASE-5915:
----------------------------------

-1 overall.  Here are the results of testing the latest attachment 
  http://issues.apache.org/jira/secure/attachment/12525313/5915-v2.txt
  against trunk revision .

    +1 @author.  The patch does not contain any @author tags.

    +1 tests included.  The patch appears to include 3 new or modified tests.

    +1 hadoop23.  The patch compiles against the hadoop 0.23.x profile.

    +1 javadoc.  The javadoc tool did not generate any warning messages.

    +1 javac.  The applied patch does not increase the total number of javac compiler warnings.

    +1 findbugs.  The patch does not introduce any new Findbugs (version 1.3.9) warnings.

    +1 release audit.  The applied patch does not increase the total number of release audit
warnings.

     -1 core tests.  The patch failed these unit tests:
                       org.apache.hadoop.hbase.replication.TestReplication
                  org.apache.hadoop.hbase.regionserver.TestHRegionOnCluster
                  org.apache.hadoop.hbase.regionserver.TestSplitTransactionOnCluster
                  org.apache.hadoop.hbase.regionserver.TestSplitLogWorker

Test results: https://builds.apache.org/job/PreCommit-HBASE-Build/1728//testReport/
Findbugs warnings: https://builds.apache.org/job/PreCommit-HBASE-Build/1728//artifact/trunk/patchprocess/newPatchFindbugsWarnings.html
Console output: https://builds.apache.org/job/PreCommit-HBASE-Build/1728//console

This message is automatically generated.
                
> Improve performance of KeyValue comparison
> ------------------------------------------
>
>                 Key: HBASE-5915
>                 URL: https://issues.apache.org/jira/browse/HBASE-5915
>             Project: HBase
>          Issue Type: Improvement
>          Components: performance
>    Affects Versions: 0.94.1
>            Reporter: Todd Lipcon
>            Assignee: Todd Lipcon
>         Attachments: 5915-v2.txt, hbase-5915.txt
>
>
> Got bored tonight and poked around at making KeyValue comparison faster. I was able to
get a ~23% speedup on a micro-benchmark I wrote by using Unsafe in a few more places. This
should make some difference for real workloads, since this is usually one of the top CPU consumers.

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