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Date: Sat, 18 May 2013 10:47:17 +0000 (UTC)
From: "Hudson (JIRA)" <jira@apache.org>
To: mapreduce-issues@hadoop.apache.org
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Subject: [jira] [Commented] (MAPREDUCE-4927) Historyserver 500 error due to
 NPE when accessing specific counters page for failed job
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    [ https://issues.apache.org/jira/browse/MAPREDUCE-4927?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13661331#comment-13661331 ] 

Hudson commented on MAPREDUCE-4927:
-----------------------------------

Integrated in Hadoop-Yarn-trunk #213 (See [https://builds.apache.org/job/Hadoop-Yarn-trunk/213/])
    MAPREDUCE-4927. Historyserver 500 error due to NPE when accessing specific counters page for failed job. Contributed by Ashwin Shankar (Revision 1483974)

     Result = FAILURE
jlowe : http://svn.apache.org/viewcvs.cgi/?root=Apache-SVN&view=rev&rev=1483974
Files : 
* /hadoop/common/trunk/hadoop-mapreduce-project/CHANGES.txt
* /hadoop/common/trunk/hadoop-mapreduce-project/hadoop-mapreduce-client/hadoop-mapreduce-client-app/src/main/java/org/apache/hadoop/mapreduce/v2/app/webapp/SingleCounterBlock.java
* /hadoop/common/trunk/hadoop-mapreduce-project/hadoop-mapreduce-client/hadoop-mapreduce-client-app/src/test/java/org/apache/hadoop/mapreduce/v2/app/webapp/TestAMWebApp.java

                
> Historyserver 500 error due to NPE when accessing specific counters page for failed job
> ---------------------------------------------------------------------------------------
>
>                 Key: MAPREDUCE-4927
>                 URL: https://issues.apache.org/jira/browse/MAPREDUCE-4927
>             Project: Hadoop Map/Reduce
>          Issue Type: Bug
>          Components: jobhistoryserver
>    Affects Versions: 2.0.3-alpha, 0.23.6
>            Reporter: Jason Lowe
>            Assignee: Ashwin Shankar
>             Fix For: 2.0.5-beta, 0.23.8
>
>         Attachments: MAPREDUCE-4927.txt
>
>
> Went to the historyserver page for a job that failed and examined the counters page.  When I clicked on a specific counter, the historyserver returned a 500 error.  The historyserver logs showed it encountered an NPE error, full traceback to follow.

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