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From "Kihwal Lee (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (MAPREDUCE-4371) Check for cyclic dependencies in Jobcontrol job DAG
Date Fri, 29 Jun 2012 04:45:43 GMT

    [ https://issues.apache.org/jira/browse/MAPREDUCE-4371?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13403692#comment-13403692
] 

Kihwal Lee commented on MAPREDUCE-4371:
---------------------------------------

{{TestLocalJobControl}} and {{TestMapReduceJobControl}} are failing in trunk due to NPE from
JobControl#isCircular(). 
                
> Check for cyclic dependencies in Jobcontrol job DAG
> ---------------------------------------------------
>
>                 Key: MAPREDUCE-4371
>                 URL: https://issues.apache.org/jira/browse/MAPREDUCE-4371
>             Project: Hadoop Map/Reduce
>          Issue Type: Improvement
>          Components: mrv1
>    Affects Versions: 3.0.0
>            Reporter: madhukara phatak
>             Fix For: 3.0.0
>
>         Attachments: MAPREDUCE-4371-1.patch, MAPREDUCE-4371.patch
>
>
> In current implementation of JobControl, whenever there is a cyclic dependency between
the jobs it throws a Stack overflow exception. This jira adds a cyclic check to jobcontrol.

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