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From "Jason Lowe (JIRA)" <j...@apache.org>
Subject [jira] [Updated] (MAPREDUCE-4794) DefaultSpeculator generates error messages on normal shutdown
Date Tue, 15 Jan 2013 16:18:13 GMT

     [ https://issues.apache.org/jira/browse/MAPREDUCE-4794?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Jason Lowe updated MAPREDUCE-4794:
----------------------------------

            Assignee: Jason Lowe
    Target Version/s: 2.0.3-alpha, 0.23.6
              Status: Patch Available  (was: Open)
    
> 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: 2.0.1-alpha, 0.23.3
>            Reporter: Jason Lowe
>            Assignee: Jason Lowe
>         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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