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From "Robert Joseph Evans (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (MAPREDUCE-4549) Distributed cache conflicts breaks backwards compatability
Date Mon, 17 Dec 2012 16:15:51 GMT

    [ https://issues.apache.org/jira/browse/MAPREDUCE-4549?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13534033#comment-13534033
] 

Robert Joseph Evans commented on MAPREDUCE-4549:
------------------------------------------------

I am fine with this being in branch-2.  +1
                
> Distributed cache conflicts breaks backwards compatability
> ----------------------------------------------------------
>
>                 Key: MAPREDUCE-4549
>                 URL: https://issues.apache.org/jira/browse/MAPREDUCE-4549
>             Project: Hadoop Map/Reduce
>          Issue Type: Bug
>          Components: mrv2
>    Affects Versions: 0.23.3, 2.0.2-alpha
>            Reporter: Robert Joseph Evans
>            Assignee: Robert Joseph Evans
>            Priority: Critical
>             Fix For: 2.0.3-alpha, 0.23.5
>
>         Attachments: MAPREDUCE-4549-trunk.patch, MR-4549-branch-0.23.txt
>
>
> I recently put in MAPREDUCE-4503 which went a bit too far, and broke backwards compatibility
with 1.0 in distribtued cache entries.  instead of changing the behavior of the distributed
cache to more closely match 1.0 behavior I want to just change the exception to a warning
message informing the users that it will become an error in 2.0

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