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From "Navis Ryu" <navis....@nexr.com>
Subject Review Request: HIVE-2329 RS dedup optimization shoud be avoided in some cases
Date Mon, 08 Aug 2011 06:52:56 GMT

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This is an automatically generated e-mail. To reply, visit:
https://reviews.apache.org/r/1313/
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Review request for hive.


Summary
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If map aggregation is set to false, DISTRIBUTED BY followed by GROUP BY with same key fails
in runtime. ReduceSinkDeDuplication optimization should be avoid if child of child RS is GBY.



This addresses bug HIVE-2329.
    https://issues.apache.org/jira/browse/HIVE-2329


Diffs
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  ql/src/test/queries/clientpositive/reduce_deduplicate_exclude_gby.q PRE-CREATION 
  ql/src/test/results/clientpositive/reduce_deduplicate_exclude_gby.q.out PRE-CREATION 
  ql/src/java/org/apache/hadoop/hive/ql/optimizer/ReduceSinkDeDuplication.java e91b4d5 

Diff: https://reviews.apache.org/r/1313/diff


Testing
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Thanks,

Navis


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