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From "Amareshwari Sriramadasu (JIRA)" <j...@apache.org>
Subject [jira] Updated: (MAPREDUCE-1597) combinefileinputformat does not work with non-splittable files
Date Mon, 06 Sep 2010 10:54:34 GMT

     [ https://issues.apache.org/jira/browse/MAPREDUCE-1597?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel

Amareshwari Sriramadasu updated MAPREDUCE-1597:

    Attachment: patch-1597.txt

Patch adding the support for non-splittable files in CombineFileInputFormat. If the file is
not splittable, it generates OneBlockInfo with full file length.

> combinefileinputformat does not work with non-splittable files
> --------------------------------------------------------------
>                 Key: MAPREDUCE-1597
>                 URL: https://issues.apache.org/jira/browse/MAPREDUCE-1597
>             Project: Hadoop Map/Reduce
>          Issue Type: Bug
>            Reporter: Namit Jain
>            Assignee: Amareshwari Sriramadasu
>             Fix For: 0.22.0
>         Attachments: patch-1597.txt
> CombineFileInputFormat.getSplits() does not take into account whether a file is splittable.
> This can lead to a problem for compressed text files - for example, getSplits() may return
> than 1 split depending on the size of the compressed file, all the splits recordreader
will read the
> complete file.
> I ran into this problem while using Hive on hadoop 20.

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