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From "Hadoop QA (JIRA)" <j...@apache.org>
Subject [jira] Commented: (MAPREDUCE-967) TaskTracker does not need to fully unjar job jars
Date Mon, 02 Nov 2009 03:08:59 GMT

    [ https://issues.apache.org/jira/browse/MAPREDUCE-967?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12772411#action_12772411

Hadoop QA commented on MAPREDUCE-967:

-1 overall.  Here are the results of testing the latest attachment 
  against trunk revision 831037.

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

    +1 tests included.  The patch appears to include 5 new or modified tests.

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

    -1 javac.  The patch appears to cause tar ant target to fail.

    -1 findbugs.  The patch appears to cause Findbugs to fail.

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

    -1 core tests.  The patch failed core unit tests.

    -1 contrib tests.  The patch failed contrib unit tests.

Test results: http://hudson.zones.apache.org/hudson/job/Mapreduce-Patch-h3.grid.sp2.yahoo.net/116/testReport/
Checkstyle results: http://hudson.zones.apache.org/hudson/job/Mapreduce-Patch-h3.grid.sp2.yahoo.net/116/artifact/trunk/build/test/checkstyle-errors.html
Console output: http://hudson.zones.apache.org/hudson/job/Mapreduce-Patch-h3.grid.sp2.yahoo.net/116/console

This message is automatically generated.

> TaskTracker does not need to fully unjar job jars
> -------------------------------------------------
>                 Key: MAPREDUCE-967
>                 URL: https://issues.apache.org/jira/browse/MAPREDUCE-967
>             Project: Hadoop Map/Reduce
>          Issue Type: Improvement
>          Components: tasktracker
>    Affects Versions: 0.21.0
>            Reporter: Todd Lipcon
>            Assignee: Todd Lipcon
>         Attachments: mapreduce-967-branch-0.20.txt, mapreduce-967.txt, mapreduce-967.txt
> In practice we have seen some users submitting job jars that consist of 10,000+ classes.
Unpacking these jars into mapred.local.dir and then cleaning up after them has a significant
cost (both in wall clock and in unnecessary heavy disk utilization). This cost can be easily

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