Mikko Kupsu created PIG-4515:
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Summary: 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
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}
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