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https://issues.apache.org/jira/browse/HIVE-1695?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12966227#action_12966227
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He Yongqiang commented on HIVE-1695:
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The approach sounds good. (Or you can keep MapJoin%Sel and do sth inside it.)
> MapJoin followed by ReduceSink should be done as single MapReduce Job
> ---------------------------------------------------------------------
>
> Key: HIVE-1695
> URL: https://issues.apache.org/jira/browse/HIVE-1695
> Project: Hive
> Issue Type: Improvement
> Components: Query Processor
> Reporter: Amareshwari Sriramadasu
>
> Currently MapJoin followed by ReduceSink runs as two MapReduce jobs : One map
> only job followed by a Map-Reduce job. It can be combined into single
> MapReduce Job.
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