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https://issues.apache.org/jira/browse/HIVE-28?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Namit Jain resolved HIVE-28.
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Resolution: Fixed
Fix Version/s: 0.5.0
Assignee: Namit Jain
It should be fine with the use of CombineFileInputFormat
> [hive] small part files can result in case of a good filter or map-only jobs
> ----------------------------------------------------------------------------
>
> Key: HIVE-28
> URL: https://issues.apache.org/jira/browse/HIVE-28
> Project: Hadoop Hive
> Issue Type: Bug
> Components: Query Processor
> Reporter: Namit Jain
> Assignee: Namit Jain
> Fix For: 0.5.0
>
>
> A map-only job can result in a lot of empty files.
> Now if another job is created on this, it takes a lot of time - some hadoop
> issue - does not scale very well with a large number mappers
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