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https://issues.apache.org/jira/browse/PIG-671?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13004087#comment-13004087
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Alan Gates commented on PIG-671:
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Any changes we make have to still work in two scenarios:
{code}
B = group A by x;
C = foreach B generate group, COUNT(A);
{code}
{code}
B = group A by x;
C = foreach B generate group, COUNT(A.$0);
{code}
I think what you're proposing to do with getArgToFuncMapping meets this, but we
want to be sure to test that.
> typechecker does not throw an error when multiple arguments are passed to
> COUNT
> -------------------------------------------------------------------------------
>
> Key: PIG-671
> URL: https://issues.apache.org/jira/browse/PIG-671
> Project: Pig
> Issue Type: Bug
> Environment: i686 i386 GNU/Linux
> Reporter: Araceli Henley
> Assignee: Deepak Kumar V
> Priority: Trivial
>
> In this example, the agggregate function COUNT is passed multiple arguments
> and does not throw an error.
> TEST: Aggregate_184
> 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 COUNT ( A.$0, A.$0 );
> STORE X INTO
> '/user/pig/tests/results/araceli.1234381533/AggregateFunc_184.out' USING
> PigStorage();
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