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From "jiraposter@reviews.apache.org (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HIVE-2056) Generate single MR job for multi groupby query.
Date Mon, 09 May 2011 13:39:03 GMT

    [ https://issues.apache.org/jira/browse/HIVE-2056?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13030729#comment-13030729
] 

jiraposter@reviews.apache.org commented on HIVE-2056:
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This is an automatically generated e-mail. To reply, visit:
https://reviews.apache.org/r/700/
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Review request for hive.


Summary
-------

Attached patch generates a single M/R job for multi group by query with non-null common group
by key set. Added configuration hive.multigroupby.singlemr to turn on and off the optimization.



This addresses bug HIVE-2056.
    https://issues.apache.org/jira/browse/HIVE-2056


Diffs
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  trunk/common/src/java/org/apache/hadoop/hive/conf/HiveConf.java 1100910 
  trunk/ql/src/java/org/apache/hadoop/hive/ql/parse/SemanticAnalyzer.java 1100910 
  trunk/ql/src/test/queries/clientpositive/groupby10.q 1100910 
  trunk/ql/src/test/queries/clientpositive/groupby8.q 1100910 
  trunk/ql/src/test/queries/clientpositive/groupby8_noskew.q 1100910 
  trunk/ql/src/test/queries/clientpositive/groupby9.q 1100910 
  trunk/ql/src/test/results/clientpositive/groupby10.q.out 1100910 
  trunk/ql/src/test/results/clientpositive/groupby8.q.out 1100910 
  trunk/ql/src/test/results/clientpositive/groupby9.q.out 1100910 

Diff: https://reviews.apache.org/r/700/diff


Testing
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Updated jira with performance tests.


Thanks,

Amareshwari



> Generate single MR job for multi groupby query.
> -----------------------------------------------
>
>                 Key: HIVE-2056
>                 URL: https://issues.apache.org/jira/browse/HIVE-2056
>             Project: Hive
>          Issue Type: Improvement
>            Reporter: Amareshwari Sriramadasu
>            Assignee: Amareshwari Sriramadasu
>             Fix For: 0.8.0
>
>         Attachments: patch-2056.txt
>
>


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