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https://issues.apache.org/jira/browse/PIG-613?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Viraj Bhat updated PIG-613:
---------------------------

    Attachment: SQUARE.java

SQUARE UDF

> Casting elements inside a tuple does not take effect
> ----------------------------------------------------
>
>                 Key: PIG-613
>                 URL: https://issues.apache.org/jira/browse/PIG-613
>             Project: Pig
>          Issue Type: Bug
>          Components: impl
>    Affects Versions: types_branch
>            Reporter: Viraj Bhat
>             Fix For: types_branch
>
>         Attachments: myfloatdata.txt, SQUARE.java
>
>
> Consider the following Pig script which casts return values of the SQUARE UDF 
> which are  tuples of doubles to long. The describe output of B shows it is 
> long, however the result is still double.
> {code}
> register statistics.jar;
> A = load 'myfloatdata.txt' using PigStorage() as (doublecol:double);
> B = foreach A generate (tuple(long))statistics.SQUARE(doublecol) as 
> squares:(loadtimesq);
> describe B;
> explain B;
> dump B;
> {code}
> ===========================================
> Describe output of B:
> B: {squares: (loadtimesq: long)}
> ===========================================================
> Sample output of B:
> ((7885.44))
> ((792098.2200010001))
> ((1497360.9268889998))
> ((50023.7956))
> ((0.972196))
> ((0.30980356))
> ((9.9760144E-7))
> ===========================================================
> Cause: The cast for Tuples has not been implemented in POCast.java

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