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From "Hadoop QA (JIRA)" <j...@apache.org>
Subject [jira] Commented: (PIG-1098) [zebra] Zebra Performance Optimizations
Date Tue, 01 Dec 2009 10:49:20 GMT

    [ https://issues.apache.org/jira/browse/PIG-1098?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12784167#action_12784167
] 

Hadoop QA commented on PIG-1098:
--------------------------------

-1 overall.  Here are the results of testing the latest attachment 
  http://issues.apache.org/jira/secure/attachment/12426477/PIG-1098.patch
  against trunk revision 885465.

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

    -1 tests included.  The patch doesn't appear to include any new or modified tests.
                        Please justify why no tests are needed for this patch.

    +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 warnings.

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

    +1 core tests.  The patch passed core unit tests.

    +1 contrib tests.  The patch passed contrib unit tests.

Test results: http://hudson.zones.apache.org/hudson/job/Pig-Patch-h8.grid.sp2.yahoo.net/70/testReport/
Findbugs warnings: http://hudson.zones.apache.org/hudson/job/Pig-Patch-h8.grid.sp2.yahoo.net/70/artifact/trunk/build/test/findbugs/newPatchFindbugsWarnings.html
Console output: http://hudson.zones.apache.org/hudson/job/Pig-Patch-h8.grid.sp2.yahoo.net/70/console

This message is automatically generated.

> [zebra] Zebra Performance Optimizations
> ---------------------------------------
>
>                 Key: PIG-1098
>                 URL: https://issues.apache.org/jira/browse/PIG-1098
>             Project: Pig
>          Issue Type: Improvement
>            Reporter: Yan Zhou
>            Assignee: Yan Zhou
>            Priority: Minor
>             Fix For: 0.6.0, 0.7.0
>
>         Attachments: PIG-1098.patch
>
>
> Many in-core performance optimization opportunities exist in zebra, such as removal of
redundant precautionary checks, use of better collection types to reduce levels of indirection
to the memory objects, changing of input splits in ascending sizes to descending sizes. Observed
protyped improvements are around 10% wall clock time improvements.

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