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From "Hadoop QA (JIRA)" <j...@apache.org>
Subject [jira] Commented: (HADOOP-2947) [HOD] Hod should redirect stderr and stdout of Hadoop daemons to assist debugging
Date Tue, 01 Apr 2008 16:54:25 GMT

    [ https://issues.apache.org/jira/browse/HADOOP-2947?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12584212#action_12584212
] 

Hadoop QA commented on HADOOP-2947:
-----------------------------------

+1 overall.  Here are the results of testing the latest attachment 
http://issues.apache.org/jira/secure/attachment/12379020/HADOOP-2947.4
against trunk revision 643282.

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

    tests included +1.  The patch appears to include 7 new or modified tests.

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

    javac +1.  The applied patch does not generate any new javac compiler warnings.

    release audit +1.  The applied patch does not generate any new release audit warnings.

    findbugs +1.  The patch does not introduce any new Findbugs warnings.

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

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

Test results: http://hudson.zones.apache.org/hudson/job/Hadoop-Patch/2112/testReport/
Findbugs warnings: http://hudson.zones.apache.org/hudson/job/Hadoop-Patch/2112/artifact/trunk/build/test/findbugs/newPatchFindbugsWarnings.html
Checkstyle results: http://hudson.zones.apache.org/hudson/job/Hadoop-Patch/2112/artifact/trunk/build/test/checkstyle-errors.html
Console output: http://hudson.zones.apache.org/hudson/job/Hadoop-Patch/2112/console

This message is automatically generated.

> [HOD] Hod should redirect stderr and stdout of Hadoop daemons to assist debugging
> ---------------------------------------------------------------------------------
>
>                 Key: HADOOP-2947
>                 URL: https://issues.apache.org/jira/browse/HADOOP-2947
>             Project: Hadoop Core
>          Issue Type: Improvement
>          Components: contrib/hod
>    Affects Versions: 0.16.0
>            Reporter: Hemanth Yamijala
>            Assignee: Vinod Kumar Vavilapalli
>            Priority: Blocker
>             Fix For: 0.17.0
>
>         Attachments: HADOOP-2947, HADOOP-2947.2, HADOOP-2947.3, HADOOP-2947.4
>
>
> Copied from internal bug details from Koji:
> ==========================
> Sometimes JobTracker/TaskTracker starts consuming 99% cpu and stops responding to 'jstack'
call.  In those cases,
> usually it still responds to kill -QUIT signal which forces the jvm to dump the stack
to stdout.  
> Please have the stdout of JT/TT redirected to a file. 
> Adding stderr. 
> If thread has an uncaught exception, it prints out to stderr and dies.
> ==========================

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