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From "Daniel Dai (JIRA)" <j...@apache.org>
Subject [jira] [Updated] (PIG-2970) Nested foreach getting incorrect schema when having unrelated inner query
Date Sat, 06 Apr 2013 00:19:16 GMT

     [ https://issues.apache.org/jira/browse/PIG-2970?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Daniel Dai updated PIG-2970:
----------------------------

    Assignee: Daniel Dai  (was: Koji Noguchi)
    
> Nested foreach getting incorrect schema when having unrelated inner query
> -------------------------------------------------------------------------
>
>                 Key: PIG-2970
>                 URL: https://issues.apache.org/jira/browse/PIG-2970
>             Project: Pig
>          Issue Type: Bug
>          Components: parser
>    Affects Versions: 0.10.0
>            Reporter: Koji Noguchi
>            Assignee: Daniel Dai
>            Priority: Minor
>             Fix For: 0.12
>
>         Attachments: PIG-2970-0.patch, PIG-2970-1.patch, pig-2970-trunk-v01.txt, pig-2970-trunk-v02.txt
>
>
> While looking at PIG-2968, hit a weird error message.
> {noformat}
> $ cat -n test/foreach2.pig
>      1  daily = load 'nyse' as (exchange, symbol);
>      2  grpd = group daily by exchange;
>      3  unique = foreach grpd {
>      4          sym = daily.symbol;
>      5          uniq_sym = distinct sym;
>      6          --ignoring uniq_sym result
>      7          generate group, daily;
>      8  };
>      9  describe unique;
>     10  zzz = foreach unique generate group;
>     11  explain zzz;
> % pig -x local -t ColumnMapKeyPrune test/foreach2.pig
> ...
> unique: {symbol: bytearray}
> 2012-10-12 16:55:44,226 [main] ERROR org.apache.pig.tools.grunt.Grunt - ERROR 1025: 
> <file test/foreach2.pig, line 10, column 30> Invalid field projection. Projected
field [group] does not exist in schema: symbol:bytearray.
> ...
> {noformat}

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