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From "Tom White (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (MAPREDUCE-5049) CombineFileInputFormat counts all compressed files non-splitable
Date Thu, 07 Mar 2013 17:59:11 GMT

    [ https://issues.apache.org/jira/browse/MAPREDUCE-5049?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13596117#comment-13596117
] 

Tom White commented on MAPREDUCE-5049:
--------------------------------------

+1
                
> CombineFileInputFormat counts all compressed files non-splitable
> ----------------------------------------------------------------
>
>                 Key: MAPREDUCE-5049
>                 URL: https://issues.apache.org/jira/browse/MAPREDUCE-5049
>             Project: Hadoop Map/Reduce
>          Issue Type: Bug
>    Affects Versions: 1.1.1
>            Reporter: Sandy Ryza
>            Assignee: Sandy Ryza
>         Attachments: MAPREDUCE-5049.patch
>
>
> In branch-1, CombineFileInputFormat doesn't take SplittableCompressionCodec into account
and thinks that all compressible input files aren't splittable.  This is a regression from
when handling for non-splitable compression codecs was originally added in MAPREDUCE-1597,
and seems to have somehow gotten in when the code was pulled from 0.22 to branch-1.

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