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From "Hadoop QA (Commented) (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (MAPREDUCE-2592) TT should fail task immediately if userlog dir cannot be created
Date Sun, 18 Dec 2011 13:04:30 GMT

    [ https://issues.apache.org/jira/browse/MAPREDUCE-2592?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13171859#comment-13171859
] 

Hadoop QA commented on MAPREDUCE-2592:
--------------------------------------

-1 overall.  Here are the results of testing the latest attachment 
  http://issues.apache.org/jira/secure/attachment/12483859/MAPREDUCE-2592.r1.diff
  against trunk revision .

    +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 new tests are needed for this patch.
                        Also please list what manual steps were performed to verify 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 eclipse:eclipse.  The patch built with eclipse:eclipse.

    +1 findbugs.  The patch does not introduce any new Findbugs (version 1.3.9) warnings.

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

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

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

Test results: https://builds.apache.org/job/PreCommit-MAPREDUCE-Build/1474//testReport/
Console output: https://builds.apache.org/job/PreCommit-MAPREDUCE-Build/1474//console

This message is automatically generated.
                
> TT should fail task immediately if userlog dir cannot be created
> ----------------------------------------------------------------
>
>                 Key: MAPREDUCE-2592
>                 URL: https://issues.apache.org/jira/browse/MAPREDUCE-2592
>             Project: Hadoop Map/Reduce
>          Issue Type: Improvement
>          Components: tasktracker
>    Affects Versions: 0.23.0
>            Reporter: Todd Lipcon
>            Assignee: Harsh J
>             Fix For: 0.24.0
>
>         Attachments: MAPREDUCE-2592.r1.diff
>
>
> Currently, TaskRunner will log the message "mkdirs failed. Ignoring" if it fails to mkdir
the userlog directory for a task. Then, it goes on to spawn taskjvm.sh which tries to redirect
output into the userlogs dir, thus failing with exit code 1. This leads to error messages
that are very hard to diagnose ("task failed with exit status 1") in cases where the userlog
directory has either become inaccessible or has reached the maximum number of dirents (32000
in ext3)

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