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https://issues.apache.org/jira/browse/HIVE-3774?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13536824#comment-13536824
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Hudson commented on HIVE-3774:
------------------------------
Integrated in Hive-trunk-h0.21 #1867 (See
[https://builds.apache.org/job/Hive-trunk-h0.21/1867/])
HIVE-3774. Sort merge join should work if join cols are a prefix of sort
columns for each partition. (njain via kevinwilfong) (Revision 1424083)
Result = SUCCESS
kevinwilfong :
http://svn.apache.org/viewcvs.cgi/?root=Apache-SVN&view=rev&rev=1424083
Files :
*
/hive/trunk/ql/src/java/org/apache/hadoop/hive/ql/optimizer/SortedMergeBucketMapJoinOptimizer.java
* /hive/trunk/ql/src/test/queries/clientpositive/smb_mapjoin_15.q
* /hive/trunk/ql/src/test/results/clientpositive/smb_mapjoin_15.q.out
> Sort merge join should work if join cols are a prefix of sort columns for
> each partition
> ----------------------------------------------------------------------------------------
>
> Key: HIVE-3774
> URL: https://issues.apache.org/jira/browse/HIVE-3774
> Project: Hive
> Issue Type: Bug
> Components: Query Processor
> Reporter: Namit Jain
> Assignee: Namit Jain
> Fix For: 0.11
>
> Attachments: hive.3774.1.patch, hive.3774.2.patch, hive.3774.3.patch
>
>
> Currently, a join is converted into a sort-merge join only if the join cols
> exactly matches the sort cols.
> This constraint can definitely be relaxed.
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