[
https://issues.apache.org/jira/browse/PIG-4515?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]
Mikko Kupsu updated PIG-4515:
-----------------------------
Description:
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}
was:
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}
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}
> 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
>
>
> 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}
--
This message was sent by Atlassian JIRA
(v6.3.4#6332)
