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From "Josh Wills (JIRA)" <j...@apache.org>
Subject [jira] [Updated] (CRUNCH-165) Pipelines should automatically use CombineFileInputFormat where input consists of many small files
Date Fri, 09 Aug 2013 23:32:47 GMT

     [ https://issues.apache.org/jira/browse/CRUNCH-165?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Josh Wills updated CRUNCH-165:
------------------------------

    Attachment: CRUNCH-165-v3.patch

I took yet another crack at this today, and I think I got it this time. :)
                
> Pipelines should automatically use CombineFileInputFormat where input consists of many
small files
> --------------------------------------------------------------------------------------------------
>
>                 Key: CRUNCH-165
>                 URL: https://issues.apache.org/jira/browse/CRUNCH-165
>             Project: Crunch
>          Issue Type: Improvement
>          Components: Core
>    Affects Versions: 0.4.0
>            Reporter: Dave Beech
>            Assignee: Josh Wills
>         Attachments: CRUNCH-165-jwills.patch, CRUNCH-165.patch, CRUNCH-165-v3.patch
>
>
> Hive had a feature introduced in HIVE-74 whereby CombineFileInputFormat would be used
if the input data consisted of many small files, making the resulting mapreduce jobs more
efficient by giving individual mappers more data to process. This would be a nice feature
for Crunch to have, too.

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