[jira] [Commented] (PIG-4515) org.apache.pig.builtin.Distinct throws ClassCastException

["Mikko Kupsu (JIRA)" <ji...@apache.org>]

    [ https://issues.apache.org/jira/browse/PIG-4515?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14612914#comment-14612914 ] 

Mikko Kupsu commented on PIG-4515:
----------------------------------

[~rohini]: What is the status of this bug? It is still present in 0.15.0!

> org.apache.pig.builtin.Distinct throws ClassCastException
> ---------------------------------------------------------
>
>                 Key: PIG-4515
>                 URL: https://issues.apache.org/jira/browse/PIG-4515
>             Project: Pig
>          Issue Type: Bug
>    Affects Versions: 0.14.0
>         Environment: 2015-04-23 08:37:49,117 [main] INFO  org.apache.pig.Main - Apache Pig version 0.14.0 (r1640057) compiled Nov 16 2014, 18:02:05
>            Reporter: Mikko Kupsu
>         Attachments: fix_singletuplebag_classcast_exception.patch, fix_singletuplebag_classcast_exception_2.patch
>
>
> Running below script causes *ClassCastException*.
> {code}
> A = LOAD 'A' AS (a:int, b:int);
> B = GROUP A BY a;
> C = FOREACH B GENERATE Distinct(A);
> DUMP C;
> {code}
> Content of A:
> {code}
> 1	1
> 2	1
> 3	1
> 4	1
> 5	2
> 6	2
> 7	2
> 8	2
> 9	2
> {code}
> {code}
> Caused by: java.lang.ClassCastException: org.apache.pig.data.SingleTupleBag cannot be cast to org.apache.pig.data.Tuple
> 	at org.apache.pig.builtin.Distinct$Initial.exec(Distinct.java:86)
> 	at org.apache.pig.builtin.Distinct$Initial.exec(Distinct.java:78)
> 	at org.apache.pig.backend.hadoop.executionengine.physicalLayer.expressionOperators.POUserFunc.getNext(POUserFunc.java:323)
> 	at org.apache.pig.backend.hadoop.executionengine.physicalLayer.expressionOperators.POUserFunc.getNextTuple(POUserFunc.java:362)
> 	at org.apache.pig.backend.hadoop.executionengine.physicalLayer.PhysicalOperator.getNext(PhysicalOperator.java:361)
> {code}



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