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From "Hudson (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (MAPREDUCE-4794) DefaultSpeculator generates error messages on normal shutdown
Date Sat, 02 Mar 2013 12:41:13 GMT

    [ https://issues.apache.org/jira/browse/MAPREDUCE-4794?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13591400#comment-13591400
] 

Hudson commented on MAPREDUCE-4794:
-----------------------------------

Integrated in Hadoop-Hdfs-0.23-Build #541 (See [https://builds.apache.org/job/Hadoop-Hdfs-0.23-Build/541/])
    MAPREDUCE-4794. DefaultSpeculator generates error messages on normal shutdown (Jason Lowe
via jeagles) (Revision 1451832)

     Result = SUCCESS
jeagles : http://svn.apache.org/viewcvs.cgi/?root=Apache-SVN&view=rev&rev=1451832
Files : 
* /hadoop/common/branches/branch-0.23/hadoop-mapreduce-project/CHANGES.txt
* /hadoop/common/branches/branch-0.23/hadoop-mapreduce-project/hadoop-mapreduce-client/hadoop-mapreduce-client-app/src/main/java/org/apache/hadoop/mapreduce/v2/app/speculate/DefaultSpeculator.java

                
> DefaultSpeculator generates error messages on normal shutdown
> -------------------------------------------------------------
>
>                 Key: MAPREDUCE-4794
>                 URL: https://issues.apache.org/jira/browse/MAPREDUCE-4794
>             Project: Hadoop Map/Reduce
>          Issue Type: Bug
>          Components: applicationmaster
>    Affects Versions: 0.23.3, 2.0.1-alpha
>            Reporter: Jason Lowe
>            Assignee: Jason Lowe
>              Labels: usability
>             Fix For: 3.0.0, 0.23.7, 2.0.4-beta
>
>         Attachments: MAPREDUCE-4794.patch
>
>
> DefaultSpeculator can log the following error message on a normal shutdown of the ApplicationMaster:
> {noformat}
> 2012-11-13 01:35:31,841 ERROR [DefaultSpeculator background processing] org.apache.hadoop.mapreduce.v2.app.speculate.DefaultSpeculator:
Background thread returning, interrupted : java.lang.InterruptedException
> {noformat}
> and in addition for some reason it logs the corresponding backtrace to stdout.
> Like the errors fixed in MAPREDUCE-4741, this error message in the syslog and backtrace
on stdout can be confusing to users as to whether the job really succeeded.

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