[jira] [Resolved] (PIG-2683) Schema propogation not working correctly after join

["Bill Graham (JIRA)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/PIG-2683?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Bill Graham resolved PIG-2683.
------------------------------

    Resolution: Not A Problem
    
> Schema propogation not working correctly after join
> ---------------------------------------------------
>
>                 Key: PIG-2683
>                 URL: https://issues.apache.org/jira/browse/PIG-2683
>             Project: Pig
>          Issue Type: Bug
>    Affects Versions: 0.7.0
>            Reporter: Tushar Agrawal
>
> The schema propagation is not working correctly in Pig 0.7.0. This was working in 0.4.0.
> Following was the output with Pig 0.4.0 -
> grunt> A = LOAD '/tmp/part-r-00000' USING PigStorage('\t');
> grunt> B = FOREACH A GENERATE $0 as f1, $1 as f2;
> grunt> describe B;
> B: {f1: bytearray,f2: bytearray}
> grunt> F = JOIN B by (f1), A by ($0);
> grunt> describe F;
> F: {B::f1: bytearray,B::f2: bytearray,bytearray}
> Following is the output with Pig 0.7.0 -
> grunt> A = LOAD '/tmp/part-r-00000' USING PigStorage('\t');
> grunt> B = FOREACH A GENERATE $0 as f1, $1 as f2;
> grunt> describe B;
> B: {f1: bytearray,f2: bytearray}
> grunt> F = JOIN B by (f1), A by ($0);
> grunt> describe F;
> Schema for F unknown.

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