Xianda Ke created PIG-4842:
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Summary: Collected group doesn't work in some cases
Key: PIG-4842
URL: https://issues.apache.org/jira/browse/PIG-4842
Project: Pig
Issue Type: Sub-task
Reporter: Xianda Ke
Scenario:
1. input data:
cat collectedgroup1
1
1
2
2. pig script:
A = LOAD 'collectedgroup1' USING myudfs.DummyCollectableLoader() AS (id);
B = GROUP A by $0 USING 'collected';
C = GROUP B by $0 USING 'collected';
DUMP C;
The expected output:
(1,{(1,{(1),(1)})})
(2,{(2,{(2)})})
The actual output:
(1,{(1,{(1),(1)})})
(1,)
(2,{(2,{(2)})})
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