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From "Daniel Dai (JIRA)" <j...@apache.org>
Subject [jira] Updated: (PIG-1128) column pruning causing failure when foreach has user-specified schema
Date Sat, 05 Dec 2009 02:19:20 GMT

     [ https://issues.apache.org/jira/browse/PIG-1128?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Daniel Dai updated PIG-1128:
----------------------------

    Attachment: PIG-1128-1.patch

> column pruning causing failure when foreach has user-specified schema
> ---------------------------------------------------------------------
>
>                 Key: PIG-1128
>                 URL: https://issues.apache.org/jira/browse/PIG-1128
>             Project: Pig
>          Issue Type: Bug
>    Affects Versions: 0.6.0, 0.7.0
>            Reporter: Thejas M Nair
>            Assignee: Daniel Dai
>             Fix For: 0.6.0
>
>         Attachments: PIG-1128-1.patch
>
>
> Issue is seen in 0.6.0 and trunk.
> grunt> l = load 'dummy.txt' as ( c1 : chararray,  c2 : int);                     
             
> grunt> f1 = foreach l generate c1 as c1 : chararray, c2 as c2 : int, 'CA' as state
: chararray;
> grunt> f2 = foreach f1 generate c1 as c1 : chararray;                            
             
> grunt> explain f2;
> 2009-12-04 13:11:19,010 [main] ERROR org.apache.pig.tools.grunt.Grunt - ERROR 1022: Type
mismatch merging schema prefix. Field Schema: chararray. Other Field Schema: c2: int
> ( it does not matter if the new schema has new/different column name - )
> grunt>l = load 'dummy.txt' as ( c1 : chararray,  c2 : int);
> grunt>f1 = foreach l generate c1 as c11 : chararray, c2 as c22 : int, 'CA' as state
: chararray;
> grunt>f2 = foreach f1 generate c11 as c111 : chararray;
> grunt> explain f2;
> 2009-12-04 13:13:01,462 [main] ERROR org.apache.pig.tools.grunt.Grunt - ERROR 1022: Type
mismatch merging schema prefix. Field Schema: chararray. Other Field Schema: c22: int

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