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From "Arun C Murthy (JIRA)" <j...@apache.org>
Subject [jira] [Assigned] (MAPREDUCE-4568) Throw "early" exception when duplicate files or archives are found in distributed cache
Date Tue, 09 Oct 2012 05:30:04 GMT

     [ https://issues.apache.org/jira/browse/MAPREDUCE-4568?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Arun C Murthy reassigned MAPREDUCE-4568:
----------------------------------------

    Assignee: Arun C Murthy
    
> Throw "early" exception when duplicate files or archives are found in distributed cache
> ---------------------------------------------------------------------------------------
>
>                 Key: MAPREDUCE-4568
>                 URL: https://issues.apache.org/jira/browse/MAPREDUCE-4568
>             Project: Hadoop Map/Reduce
>          Issue Type: Bug
>            Reporter: Mohammad Kamrul Islam
>            Assignee: Arun C Murthy
>
> According to #MAPREDUCE-4549, Hadoop 2.x throws exception if duplicates found in cacheFiles
or cacheArchives. The exception  throws during job submission.
> This JIRA is to throw the exception ==early== when it is first added to the Distributed
Cache through addCacheFile or addFileToClassPath.
> It will help the client to decide whether to fail-fast or continue w/o the duplicated
entries.
> Alternatively, Hadoop could provide a knob where user will choose whether to throw error(
coming behavior) or silently ignore (old behavior).

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