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From "Dmitriy V. Ryaboy (Commented) (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (PIG-438) Handle realiasing of existing Alias (A=B;)
Date Tue, 21 Feb 2012 21:56:49 GMT

    [ https://issues.apache.org/jira/browse/PIG-438?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13213001#comment-13213001
] 

Dmitriy V. Ryaboy commented on PIG-438:
---------------------------------------

Jonathan, what's the error that is now being thrown in testMissingSemicolon? If it's a sensible
message , we can change the test to that. If it's something that totally obscures the actual
missing semicolon error, we should consider how to make errors for this kind of case more
meaningful.
                
> Handle realiasing of existing Alias (A=B;) 
> -------------------------------------------
>
>                 Key: PIG-438
>                 URL: https://issues.apache.org/jira/browse/PIG-438
>             Project: Pig
>          Issue Type: Bug
>    Affects Versions: 0.2.0
>            Reporter: Pradeep Kamath
>            Assignee: Jonathan Coveney
>            Priority: Minor
>             Fix For: 0.11
>
>         Attachments: PIG-438.patch
>
>
> We do not handle re-aliasing of an existing alias - this should be handled correctly.
> The following script should work:
> {code}
> a = load 'studenttab10k';
> b = filter a by $1 > '25';
> c = b;
> -- use b
> d = cogroup b by $0, a by $0;
> e = foreach d generate flatten(b), flatten(a);
> dump e
> -- use c
> f = cogroup c by $0, a by $0;
> g = foreach f generate flatten(c), flatten(a);
> dump g;
> {code}

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