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From "Alan Gates (JIRA)" <j...@apache.org>
Subject [jira] Resolved: (PIG-669) Bug in Schema comparison for casting
Date Tue, 21 Sep 2010 21:46:33 GMT

     [ https://issues.apache.org/jira/browse/PIG-669?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Alan Gates resolved PIG-669.
----------------------------

    Resolution: Not A Problem

This is correct behavior.  SUM does not accept two arguments.

> Bug in Schema comparison for casting
> ------------------------------------
>
>                 Key: PIG-669
>                 URL: https://issues.apache.org/jira/browse/PIG-669
>             Project: Pig
>          Issue Type: Bug
>         Environment: i686 i386 GNU/Linux
>            Reporter: Araceli Henley
>
> This is a bug int he Schema comparison for casting. This is a valid use of a cast in
SUM,  the first and second arguments are a cast to a Bag with an int.
>  ERROR 1045: Could not infer the matching function for org.apache.pig.builtin.SUM as
multiple or none of them fit. Please use an explicit cast.
> TEST: AggregateFunc_61 
> A =LOAD '/user/pig/tests/data/types/DataAll' USING PigStorage() AS ( Fint:int, Flong:long,
Fdouble:double, Ffloat:float, Fchar:chararray, Fchararray:chararray, Fbytearray:bytearray,
Fmap:map[], Fbag:BAG{ t:tuple( name, age, avg ) }, Ftuple:( name:chararray, age:int, avg:float)
);
> B =GROUP A ALL; 
> X =FOREACH B GENERATE SUM ( ( BAG{tuple(int)} ) A.Fbag.age, ( BAG{tuple(int)} ) A.Fbag.age);

> STORE X INTO '/user/pig/tests/results/araceli.1234465985/AggregateFunc_61.out' USING
PigStorage();
> Suggest you also try:
> X =FOREACH B GENERATE SUM ( ( BAG{tuple(int)} ) A.Fbag.age, A.Fint ); 

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