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https://issues.apache.org/jira/browse/HIVE-3647?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13548313#comment-13548313
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Hudson commented on HIVE-3647:
------------------------------
Integrated in Hive-trunk-hadoop2 #54 (See
[https://builds.apache.org/job/Hive-trunk-hadoop2/54/])
HIVE-3647. map-side groupby wrongly due to HIVE-3432. (njain via
kevinwilfong) (Revision 1411349)
Result = ABORTED
kevinwilfong :
http://svn.apache.org/viewcvs.cgi/?root=Apache-SVN&view=rev&rev=1411349
Files :
*
/hive/trunk/ql/src/java/org/apache/hadoop/hive/ql/optimizer/GroupByOptimizer.java
* /hive/trunk/ql/src/test/queries/clientpositive/groupby_sort_1.q
* /hive/trunk/ql/src/test/queries/clientpositive/groupby_sort_2.q
* /hive/trunk/ql/src/test/queries/clientpositive/groupby_sort_3.q
* /hive/trunk/ql/src/test/queries/clientpositive/groupby_sort_4.q
* /hive/trunk/ql/src/test/queries/clientpositive/groupby_sort_5.q
* /hive/trunk/ql/src/test/queries/clientpositive/groupby_sort_skew_1.q
* /hive/trunk/ql/src/test/results/clientpositive/groupby_sort_1.q.out
* /hive/trunk/ql/src/test/results/clientpositive/groupby_sort_2.q.out
* /hive/trunk/ql/src/test/results/clientpositive/groupby_sort_3.q.out
* /hive/trunk/ql/src/test/results/clientpositive/groupby_sort_4.q.out
* /hive/trunk/ql/src/test/results/clientpositive/groupby_sort_5.q.out
* /hive/trunk/ql/src/test/results/clientpositive/groupby_sort_skew_1.q.out
> map-side groupby wrongly due to HIVE-3432
> -----------------------------------------
>
> Key: HIVE-3647
> URL: https://issues.apache.org/jira/browse/HIVE-3647
> Project: Hive
> Issue Type: Bug
> Components: Query Processor
> Reporter: Namit Jain
> Assignee: Namit Jain
> Fix For: 0.10.0
>
> Attachments: hive.3647.1.patch, hive.3647.2.patch, hive.3647.3.patch,
> hive.3647.4.patch, hive.3647.5.patch, hive.3647.6.patch, hive.3647.7.patch,
> hive.3647.8.patch
>
>
> There seems to be a bug due to HIVE-3432.
> We are converting the group by to a map side group by after only looking at
> sorting columns. This can give wrong results if the data is sorted and
> bucketed by different columns.
> Add some tests for that scenario, verify and fix any issues.
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