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From "Hudson (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HIVE-4186) NPE in ReduceSinkDeDuplication
Date Wed, 20 Mar 2013 12:39:16 GMT

    [ https://issues.apache.org/jira/browse/HIVE-4186?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13607550#comment-13607550
] 

Hudson commented on HIVE-4186:
------------------------------

Integrated in Hive-trunk-h0.21 #2023 (See [https://builds.apache.org/job/Hive-trunk-h0.21/2023/])
    HIVE-4186 : NPE in ReduceSinkDeDuplication (Harish Butani via Ashutosh Chauhan) (Revision
1458524)

     Result = FAILURE
hashutosh : http://svn.apache.org/viewcvs.cgi/?root=Apache-SVN&view=rev&rev=1458524
Files : 
* /hive/trunk/ql/src/java/org/apache/hadoop/hive/ql/optimizer/ReduceSinkDeDuplication.java
* /hive/trunk/ql/src/test/queries/clientpositive/reducesink_dedup.q
* /hive/trunk/ql/src/test/results/clientpositive/reducesink_dedup.q.out

                
> NPE in ReduceSinkDeDuplication
> ------------------------------
>
>                 Key: HIVE-4186
>                 URL: https://issues.apache.org/jira/browse/HIVE-4186
>             Project: Hive
>          Issue Type: Bug
>          Components: Query Processor
>            Reporter: Harish Butani
>            Assignee: Harish Butani
>             Fix For: 0.11.0
>
>         Attachments: HIVE-4186.1.patch.txt, HIVE-4186.2.patch.txt, HIVE-4186.3.patch.txt
>
>
> When you have a sequence of RedueSinks on constants you get this error:
> {noformat}
> java.lang.NullPointerException
> 	at org.apache.hadoop.hive.ql.optimizer.ReduceSinkDeDuplication$ReduceSinkDeduplicateProcFactory$ReducerReducerProc.getPartitionAndKeyColumnMapping(ReduceSinkDeDuplication.java:416)
> {noformat}
> The e.g. to generate this si:
> {noformat}
> select p_name from (select p_name from part distribute by 1 sort by 1) p distribute by
1 sort by 1
> {noformat}
> Sorry for the contrived e.g., but this actually happens when we stack windowing clauses
(see PTF-Windowing branch)

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