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From "Hadoop QA (JIRA)" <j...@apache.org>
Subject [jira] Commented: (MAPREDUCE-1435) symlinks in cwd of the task are not handled properly after MAPREDUCE-896
Date Wed, 03 Mar 2010 07:28:27 GMT

    [ https://issues.apache.org/jira/browse/MAPREDUCE-1435?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12840506#action_12840506
] 

Hadoop QA commented on MAPREDUCE-1435:
--------------------------------------

-1 overall.  Here are the results of testing the latest attachment 
  http://issues.apache.org/jira/secure/attachment/12437630/1435.v3.patch
  against trunk revision 918206.

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

    +1 tests included.  The patch appears to include 18 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 failed core unit tests.

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

Test results: http://hudson.zones.apache.org/hudson/job/Mapreduce-Patch-h4.grid.sp2.yahoo.net/15/testReport/
Findbugs warnings: http://hudson.zones.apache.org/hudson/job/Mapreduce-Patch-h4.grid.sp2.yahoo.net/15/artifact/trunk/build/test/findbugs/newPatchFindbugsWarnings.html
Checkstyle results: http://hudson.zones.apache.org/hudson/job/Mapreduce-Patch-h4.grid.sp2.yahoo.net/15/artifact/trunk/build/test/checkstyle-errors.html
Console output: http://hudson.zones.apache.org/hudson/job/Mapreduce-Patch-h4.grid.sp2.yahoo.net/15/console

This message is automatically generated.

> symlinks in cwd of the task are not handled properly after MAPREDUCE-896
> ------------------------------------------------------------------------
>
>                 Key: MAPREDUCE-1435
>                 URL: https://issues.apache.org/jira/browse/MAPREDUCE-1435
>             Project: Hadoop Map/Reduce
>          Issue Type: Bug
>          Components: tasktracker
>    Affects Versions: 0.22.0
>            Reporter: Amareshwari Sriramadasu
>            Assignee: Ravi Gummadi
>             Fix For: 0.22.0
>
>         Attachments: 1435.patch, 1435.v1.patch, 1435.v2.patch, 1435.v3.patch, MR-1435-y20s.patch
>
>
> With JVM reuse, TaskRunner.setupWorkDir() lists the contents of workDir and does a fs.delete
on each path listed. If the listed file is a symlink to directory, it will delete the contents
of those linked directories. This would delete files from distributed cache and jars directory,if
mapred.create.symlink is true.
> Changing ownership/permissions of symlinks through ENABLE_TASK_FOR_CLEANUP would change
ownership/permissions of underlying files.
> This is observed by Karam while running streaming jobs with DistributedCache and jvm
reuse.

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