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Date: Fri, 23 Apr 2010 04:01:51 -0400 (EDT)
From: "Hadoop QA (JIRA)" <jira@apache.org>
To: mapreduce-issues@hadoop.apache.org
Subject: [jira] Commented: (MAPREDUCE-1225) TT successfully localizes a task
 even though the corresponding cache-file has already changed on DFS.
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    [ https://issues.apache.org/jira/browse/MAPREDUCE-1225?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12860160#action_12860160 ] 

Hadoop QA commented on MAPREDUCE-1225:
--------------------------------------

+1 overall.  Here are the results of testing the latest attachment 
  http://issues.apache.org/jira/secure/attachment/12442402/MAPREDUCE-1225.patch
  against trunk revision 936166.

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

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

    +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/Mapreduce-Patch-h3.grid.sp2.yahoo.net/360/testReport/
Findbugs warnings: http://hudson.zones.apache.org/hudson/job/Mapreduce-Patch-h3.grid.sp2.yahoo.net/360/artifact/trunk/build/test/findbugs/newPatchFindbugsWarnings.html
Checkstyle results: http://hudson.zones.apache.org/hudson/job/Mapreduce-Patch-h3.grid.sp2.yahoo.net/360/artifact/trunk/build/test/checkstyle-errors.html
Console output: http://hudson.zones.apache.org/hudson/job/Mapreduce-Patch-h3.grid.sp2.yahoo.net/360/console

This message is automatically generated.

> TT successfully localizes a task even though the corresponding cache-file has already changed on DFS.
> -----------------------------------------------------------------------------------------------------
>
>                 Key: MAPREDUCE-1225
>                 URL: https://issues.apache.org/jira/browse/MAPREDUCE-1225
>             Project: Hadoop Map/Reduce
>          Issue Type: Bug
>          Components: tasktracker
>    Affects Versions: 0.21.0, 0.22.0
>            Reporter: Vinod K V
>             Fix For: 0.22.0
>
>         Attachments: MAPREDUCE-1225.patch, MAPREDUCE-1225.patch, MAPREDUCE-1225.patch, MAPREDUCE-1225.patch
>
>
> This happens with the first task of a job being localized on this TT. TT doesn't check if the file on DFS is fresh according to the timestamps set in job-conf during submission. After the first task incorrectly gets localized, all further tasks fail on this TT as expected.
> Found this issue while trying to improve test-case for MAPREUCE-913.

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