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https://issues.apache.org/jira/browse/MAPREDUCE-4007?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Jason Lowe updated MAPREDUCE-4007:
----------------------------------

    Fix Version/s: 0.23.7

Thanks, Alejandro.  I committed this to branch-0.23.  Apparently this was one 
of the changes lost from branch-0.23 when branch-2 was created.
                
> JobClient getJob(JobID) should return NULL if the job does not exist (for 
> backwards compatibility)
> --------------------------------------------------------------------------------------------------
>
>                 Key: MAPREDUCE-4007
>                 URL: https://issues.apache.org/jira/browse/MAPREDUCE-4007
>             Project: Hadoop Map/Reduce
>          Issue Type: Bug
>          Components: mrv2
>    Affects Versions: 0.24.0, 0.23.3
>            Reporter: Alejandro Abdelnur
>            Assignee: Alejandro Abdelnur
>             Fix For: 2.0.0-alpha, 0.23.7
>
>         Attachments: MAPREDUCE-4007.patch, MAPREDUCE-4007.patch
>
>
> To preserve backwards compatibility with MR1 JobClient.getJob() should return 
> NULL if the job does not exist.

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