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Posted to dev@hive.apache.org by "He Yongqiang (JIRA)" <ji...@apache.org> on 2011/04/21 02:05:06 UTC
[jira] [Updated] (HIVE-942) use bucketing for group by
[ https://issues.apache.org/jira/browse/HIVE-942?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
He Yongqiang updated HIVE-942:
------------------------------
Assignee: (was: He Yongqiang)
> use bucketing for group by
> --------------------------
>
> Key: HIVE-942
> URL: https://issues.apache.org/jira/browse/HIVE-942
> Project: Hive
> Issue Type: New Feature
> Components: Query Processor
> Reporter: Namit Jain
>
> Group by on a bucketed column can be completely performed on the mapper if the split can be adjusted to span the key boundary.
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