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https://issues.apache.org/jira/browse/PIG-2216?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Daniel Dai resolved PIG-2216.
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Resolution: Duplicate
This is the same issue of PIG-2315. Mark this issue as duplicate.
> deprecate use of type in as clause of foreach statement
> -------------------------------------------------------
>
> Key: PIG-2216
> URL: https://issues.apache.org/jira/browse/PIG-2216
> Project: Pig
> Issue Type: Bug
> Reporter: Thejas M Nair
>
> In the as clause of foreach statement, type can be specified, but that type
> is actually not used (ie, it does not result in a cast). This behavior is
> misleading.
> {code}
> F = foreach INP generate c1 as (name : chararray);
> {code}
> Pig 0.8 produces an error if c1 in above example is not of same type as
> specified in the as clause.
> In 0.9, that check seems to have been lost in the parser migration. It also
> results in the logical plan thinking that the type of c1 is that specified in
> the as clause. That can cause errors such as ClassCastException.
> One way to be consistent here would have been to add cast for the as clause
> as well. But having two ways to cast complicates things. So long term, I
> think the use of types in as clause should be removed.
> For 0.10, i think the check present in 0.8 should be added back, and the
> syntax should be deprecated (resulting in a warning when used).
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