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https://issues.apache.org/jira/browse/HIVE-3904?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13623024#comment-13623024
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Hudson commented on HIVE-3904:
------------------------------
Integrated in Hive-trunk-hadoop2 #138 (See
[https://builds.apache.org/job/Hive-trunk-hadoop2/138/])
HIVE-3904 Replace hashmaps in JoinOperators to array
(Navis via namit) (Revision 1451260)
Result = FAILURE
namit : http://svn.apache.org/viewcvs.cgi/?root=Apache-SVN&view=rev&rev=1451260
Files :
*
/hive/trunk/ql/src/java/org/apache/hadoop/hive/ql/exec/AbstractMapJoinOperator.java
* /hive/trunk/ql/src/java/org/apache/hadoop/hive/ql/exec/CommonJoinOperator.java
*
/hive/trunk/ql/src/java/org/apache/hadoop/hive/ql/exec/HashTableSinkOperator.java
* /hive/trunk/ql/src/java/org/apache/hadoop/hive/ql/exec/JoinOperator.java
* /hive/trunk/ql/src/java/org/apache/hadoop/hive/ql/exec/JoinUtil.java
* /hive/trunk/ql/src/java/org/apache/hadoop/hive/ql/exec/MapJoinOperator.java
* /hive/trunk/ql/src/java/org/apache/hadoop/hive/ql/exec/SMBMapJoinOperator.java
* /hive/trunk/ql/src/java/org/apache/hadoop/hive/ql/exec/SkewJoinHandler.java
* /hive/trunk/ql/src/java/org/apache/hadoop/hive/ql/plan/JoinDesc.java
> Replace hashmaps in JoinOperators to array
> ------------------------------------------
>
> Key: HIVE-3904
> URL: https://issues.apache.org/jira/browse/HIVE-3904
> Project: Hive
> Issue Type: Improvement
> Components: Query Processor
> Reporter: Navis
> Assignee: Navis
> Priority: Trivial
> Fix For: 0.11.0
>
> Attachments: HIVE-3904.D7959.1.patch, HIVE-3904.D7959.2.patch
>
>
> Join operator has many HashMaps that maps tag to some internal
> value(ExprEvals, OIs, etc.) and theses are accessed 5 or more times per an
> object, which is seemed unnecessary overhead.
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