[jira] [Assigned] (PIG-1920) An error in new parser

["Xuefu Zhang (JIRA)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/PIG-1920?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Xuefu Zhang reassigned PIG-1920:
--------------------------------

    Assignee: Daniel Dai  (was: Xuefu Zhang)

It seems related to the 'null#u:int' issue.

> An error in new parser
> ----------------------
>
>                 Key: PIG-1920
>                 URL: https://issues.apache.org/jira/browse/PIG-1920
>             Project: Pig
>          Issue Type: Bug
>          Components: impl
>    Affects Versions: 0.9.0
>            Reporter: Richard Ding
>            Assignee: Daniel Dai
>             Fix For: 0.9.0
>
>
> Run following Pig script on trunk:
> {code}
> A = load 'input' as (v, u);
> B = group A by $0;
> C = group B by $0;
> describe C;
> R = foreach C generate B.A.v; 
> describe R;
> {code}
> One gets the this error:
> {code}
> C: {group: bytearray,B: {(group: bytearray,A: {(v: bytearray,u: bytearray)})}}
> [main] ERROR org.apache.pig.tools.grunt.Grunt - ERROR 1000: Invalid field reference. Referenced field [v] does not exist in schema: A#19:bag{null#20:tuple(v#17:bytearray,u#18:bytearray)}.
> {code}
> Change the 5th line to 
> {code}
> R = foreach C generate B.A.$0; 
> {code}
> One gets this output:
> {code}
> C: {group: bytearray,B: {(group: bytearray,A: {(v: bytearray,u: bytearray)})}}
> R: {{(A: {(v: bytearray,u: bytearray)})}}
> {code}
> This is different (and wrong) from the corresponding Pig 0.8 output:
> {code}
> C: {group: bytearray,B: {group: bytearray,A: {v: bytearray,u: bytearray}}}
> R: {{v: bytearray}}
> {code}

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