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https://issues.apache.org/jira/browse/PIG-1837?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Richard Ding updated PIG-1837:
------------------------------
Resolution: Fixed
Hadoop Flags: [Reviewed]
Status: Resolved (was: Patch Available)
Patch committed to trunk.
> Error while using IsEmpty function
> ----------------------------------
>
> Key: PIG-1837
> URL: https://issues.apache.org/jira/browse/PIG-1837
> Project: Pig
> Issue Type: Bug
> Components: impl
> Affects Versions: 0.9.0
> Reporter: Olga Natkovich
> Assignee: Richard Ding
> Fix For: 0.9.0
>
> Attachments: PIG-1837.patch
>
>
> I have the following 2 inputs:
> data1:
> 1 11
> 2 15
> data2:
> 1 10
> 4 11
> 5 10
> And the following script to work on the data:
> grunt> A = load 'data1' as (x, y: int);
> grunt> B = load 'data2' as (x, z: int);
> grunt> C = cogroup A by x, B by x;
> grunt> D = foreach C generate group, SUM(((IsEmpty(A.y))? {(0)} : A.y)) + SUM
> (((IsEmpty(B.z))? {(0)} : B.z));
> grunt> dump D;
> After running for a while, I get the following error:
> Backend error : org.apache.pig.builtin.IsEmpty cannot be cast to
> org.apache.pig.Accumulator
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