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From "Amareshwari Sriramadasu" <amareshw...@apache.org>
Subject Review Request: HIVE-2056
Date Mon, 09 May 2011 13:36:29 GMT

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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
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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


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