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https://issues.apache.org/jira/browse/HIVE-1276?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12851685#action_12851685
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Namit Jain commented on HIVE-1276:
----------------------------------
opRules.put(new RuleRegExp("R2", "GBY%.*RS%"),
ReduceSinkDeduplicateProcFactory
.getRejectedReduceSinkProc());
Then you dont need the above rule also
> optimize bucketing
> -------------------
>
> Key: HIVE-1276
> URL: https://issues.apache.org/jira/browse/HIVE-1276
> Project: Hadoop Hive
> Issue Type: Improvement
> Reporter: Namit Jain
> Assignee: He Yongqiang
> Attachments: hive-1276.1.patch, hive-1276.2.patch, hive-1276.3.patch
>
>
> If the query results are already clustered by the bucketing column, there is
> no need for another map-reduce job.
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