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https://issues.apache.org/jira/browse/HIVE-2340?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13163523#comment-13163523
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[email protected] commented on HIVE-2340:
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This is an automatically generated e-mail. To reply, visit:
https://reviews.apache.org/r/2991/
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(Updated 2011-12-06 11:02:00.777597)
Review request for hive and Carl Steinbach.
Changes
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I've overrode existing optimizer by mistake. Fixed it.
Summary
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Mostly copied from existing code. Not tested intensively yet, but it is seemed
to be used frequently for us.
This addresses bug HIVE-2340.
https://issues.apache.org/jira/browse/HIVE-2340
Diffs (updated)
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ql/src/java/org/apache/hadoop/hive/ql/optimizer/ColumnPrunerProcFactory.java
82a141d
ql/src/java/org/apache/hadoop/hive/ql/optimizer/ReduceSinkDeDuplication.java
e91b4d5
ql/src/test/queries/clientpositive/reduce_deduplicate_extended.q PRE-CREATION
ql/src/test/results/clientpositive/reduce_deduplicate_extended.q.out
PRE-CREATION
Diff: https://reviews.apache.org/r/2991/diff
Testing
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new test cases added : reduce_deduplicate_extended.q
Thanks,
Navis
> optimize orderby followed by a groupby
> --------------------------------------
>
> Key: HIVE-2340
> URL: https://issues.apache.org/jira/browse/HIVE-2340
> Project: Hive
> Issue Type: Sub-task
> Components: Query Processor
> Reporter: Navis
> Priority: Minor
> Attachments: HIVE-2340.1.patch.txt
>
>
> Before implementing optimizer for JOIN-GBY, try to implement RS-GBY
> optimizer(cluster-by following group-by).
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