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