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Posted to dev@hive.apache.org by "Amareshwari Sriramadasu (JIRA)" <ji...@apache.org> on 2010/10/06 13:44:31 UTC
[jira] Created: (HIVE-1695) MapJoin followed by ReduceSink should
be done as single MapReduce Job
MapJoin followed by ReduceSink should be done as single MapReduce Job
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Key: HIVE-1695
URL: https://issues.apache.org/jira/browse/HIVE-1695
Project: Hadoop 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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[jira] Commented: (HIVE-1695) MapJoin followed by ReduceSink should
be done as single MapReduce Job
Posted by "Namit Jain (JIRA)" <ji...@apache.org>.
[ https://issues.apache.org/jira/browse/HIVE-1695?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12918603#action_12918603 ]
Namit Jain commented on HIVE-1695:
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This would be a very useful optimization
> MapJoin followed by ReduceSink should be done as single MapReduce Job
> ---------------------------------------------------------------------
>
> Key: HIVE-1695
> URL: https://issues.apache.org/jira/browse/HIVE-1695
> Project: Hadoop 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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[jira] Commented: (HIVE-1695) MapJoin followed by ReduceSink should
be done as single MapReduce Job
Posted by "Joydeep Sen Sarma (JIRA)" <ji...@apache.org>.
[ https://issues.apache.org/jira/browse/HIVE-1695?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12918607#action_12918607 ]
Joydeep Sen Sarma commented on HIVE-1695:
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i think there's already a jira for this
> MapJoin followed by ReduceSink should be done as single MapReduce Job
> ---------------------------------------------------------------------
>
> Key: HIVE-1695
> URL: https://issues.apache.org/jira/browse/HIVE-1695
> Project: Hadoop 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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