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https://issues.apache.org/jira/browse/CRUNCH-165?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Josh Wills resolved CRUNCH-165.
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Resolution: Fixed
Fix Version/s: 0.8.0
Committed. That one feels pretty good.
Note that if you find that this trick hurts performance rather than improves
it, you can disable it by setting the crunch.disable.combine.file property to
true.
> 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
> Fix For: 0.8.0
>
> Attachments: CRUNCH-165-jwills.patch, CRUNCH-165.patch,
> CRUNCH-165-v3.patch, CRUNCH-165-v4.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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