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From "Hadoop QA (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HBASE-10094) Add batching to HLogPerformanceEvaluation
Date Fri, 06 Dec 2013 22:25:35 GMT

    [ https://issues.apache.org/jira/browse/HBASE-10094?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13841801#comment-13841801
] 

Hadoop QA commented on HBASE-10094:
-----------------------------------

{color:red}-1 overall{color}.  Here are the results of testing the latest attachment 
  http://issues.apache.org/jira/secure/attachment/12617453/10094v2.txt
  against trunk revision .

    {color:green}+1 @author{color}.  The patch does not contain any @author tags.

    {color:green}+1 tests included{color}.  The patch appears to include 3 new or modified
tests.

    {color:green}+1 hadoop1.0{color}.  The patch compiles against the hadoop 1.0 profile.

    {color:green}+1 hadoop1.1{color}.  The patch compiles against the hadoop 1.1 profile.

    {color:red}-1 javadoc{color}.  The javadoc tool appears to have generated 1 warning messages.

    {color:green}+1 javac{color}.  The applied patch does not increase the total number of
javac compiler warnings.

    {color:red}-1 findbugs{color}.  The patch appears to introduce 2 new Findbugs (version
1.3.9) warnings.

    {color:green}+1 release audit{color}.  The applied patch does not increase the total number
of release audit warnings.

    {color:green}+1 lineLengths{color}.  The patch does not introduce lines longer than 100

    {color:red}-1 site{color}.  The patch appears to cause mvn site goal to fail.

    {color:green}+1 core tests{color}.  The patch passed unit tests in .

Test results: https://builds.apache.org/job/PreCommit-HBASE-Build/8075//testReport/
Findbugs warnings: https://builds.apache.org/job/PreCommit-HBASE-Build/8075//artifact/trunk/patchprocess/newPatchFindbugsWarningshbase-hadoop2-compat.html
Findbugs warnings: https://builds.apache.org/job/PreCommit-HBASE-Build/8075//artifact/trunk/patchprocess/newPatchFindbugsWarningshbase-prefix-tree.html
Findbugs warnings: https://builds.apache.org/job/PreCommit-HBASE-Build/8075//artifact/trunk/patchprocess/newPatchFindbugsWarningshbase-client.html
Findbugs warnings: https://builds.apache.org/job/PreCommit-HBASE-Build/8075//artifact/trunk/patchprocess/newPatchFindbugsWarningshbase-common.html
Findbugs warnings: https://builds.apache.org/job/PreCommit-HBASE-Build/8075//artifact/trunk/patchprocess/newPatchFindbugsWarningshbase-protocol.html
Findbugs warnings: https://builds.apache.org/job/PreCommit-HBASE-Build/8075//artifact/trunk/patchprocess/newPatchFindbugsWarningshbase-server.html
Findbugs warnings: https://builds.apache.org/job/PreCommit-HBASE-Build/8075//artifact/trunk/patchprocess/newPatchFindbugsWarningshbase-examples.html
Findbugs warnings: https://builds.apache.org/job/PreCommit-HBASE-Build/8075//artifact/trunk/patchprocess/newPatchFindbugsWarningshbase-thrift.html
Findbugs warnings: https://builds.apache.org/job/PreCommit-HBASE-Build/8075//artifact/trunk/patchprocess/newPatchFindbugsWarningshbase-hadoop-compat.html
Console output: https://builds.apache.org/job/PreCommit-HBASE-Build/8075//console

This message is automatically generated.

> Add batching to HLogPerformanceEvaluation
> -----------------------------------------
>
>                 Key: HBASE-10094
>                 URL: https://issues.apache.org/jira/browse/HBASE-10094
>             Project: HBase
>          Issue Type: Sub-task
>          Components: Performance, wal
>            Reporter: stack
>            Assignee: Himanshu Vashishtha
>         Attachments: 10094v2.txt
>
>
> As Himanshu points out in the the parent issue, HLogPE is using an unorthodox API appending
edits to the WAL; it is using an API that is meant for tests only that does an append immediately
followed by a sync call.
> In normal deploy, WAL appends are done as a bunch of appends followed by a sync on the
tail of the transaction -- not a sync per append.
> This issue is about changing HLogPE to use append and then sync.  It also adds an argument
so you can specifying batching of a set of appends before  the sync is called.  The latter
lets HLogPE mimic multi puts that use the minibatch... which appends, appends, appends.. and
then syncs.
> Assigning to Himanshu for review.



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