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https://issues.apache.org/jira/browse/HIVE-4105?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13633660#comment-13633660
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Hudson commented on HIVE-4105:
------------------------------
Integrated in Hive-trunk-h0.21 #2067 (See
[https://builds.apache.org/job/Hive-trunk-h0.21/2067/])
HIVE-4105 : Hive MapJoinOperator unnecessarily deserializes values for all
join-keys (Vinod KV via Ashutosh Chauhan) (Revision 1468433)
Result = FAILURE
hashutosh :
http://svn.apache.org/viewcvs.cgi/?root=Apache-SVN&view=rev&rev=1468433
Files :
* /hive/trunk/ql/src/java/org/apache/hadoop/hive/ql/exec/MapJoinOperator.java
> Hive MapJoinOperator unnecessarily deserializes values for all join-keys
> ------------------------------------------------------------------------
>
> Key: HIVE-4105
> URL: https://issues.apache.org/jira/browse/HIVE-4105
> Project: Hive
> Issue Type: Bug
> Reporter: Vinod Kumar Vavilapalli
> Assignee: Vinod Kumar Vavilapalli
> Fix For: 0.12.0
>
> Attachments: HIVE-4105-20130301.1.txt, HIVE-4105-20130301.txt,
> HIVE-4105-20130415.txt, HIVE-4105.patch
>
>
> We can avoid this for inner-joins. Hive does an explicit value
> de-serialization up front so even for those rows which won't emit output. In
> these cases, we can do just with key de-serialization.
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