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From "Olga Natkovich (JIRA)" <j...@apache.org>
Subject [jira] Resolved: (PIG-442) Disambiguated alias after a foreach flatten is not accessible a couple of statements after the foreach
Date Mon, 22 Sep 2008 17:52:44 GMT

     [ https://issues.apache.org/jira/browse/PIG-442?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Olga Natkovich resolved PIG-442.
--------------------------------

    Resolution: Cannot Reproduce

patch commited. thanks santhosh!

> Disambiguated alias after a foreach flatten is not accessible a couple of statements
after the foreach
> ------------------------------------------------------------------------------------------------------
>
>                 Key: PIG-442
>                 URL: https://issues.apache.org/jira/browse/PIG-442
>             Project: Pig
>          Issue Type: Bug
>    Affects Versions: types_branch
>            Reporter: Santhosh Srinivasan
>            Assignee: Santhosh Srinivasan
>             Fix For: types_branch
>
>         Attachments: PIG-442.patch, PIG-442_1.patch
>
>
> In statements following a foreach which flattens its cogrouped inputs, unambiguous column
names are not accessible via the :: specifier. A reproducible case is given below:
> {code}
> grunt> a = load 'one' as (name, age, gpa);
> grunt> b = load 'two' as (name, age, height);
> grunt> c = cogroup a by name, b by name;
> grunt> d = foreach c generate flatten(a), flatten(b);
> grunt> e = group d by height;
> grunt> f = foreach e generate group, COUNT(d.a::height);
> 114501 [main] ERROR org.apache.pig.tools.grunt.GruntParser  - java.io.IOException: Invalid
alias: a::height in {a::name: bytearray,a::age: bytearray,gpa: bytearray,b::name: bytearray,b::age:
bytearray,height: bytearray}
>         at org.apache.pig.PigServer.parseQuery(PigServer.java:293)
>         at org.apache.pig.PigServer.registerQuery(PigServer.java:258)
>         at org.apache.pig.tools.grunt.GruntParser.processPig(GruntParser.java:432)
>         at org.apache.pig.tools.pigscript.parser.PigScriptParser.parse(PigScriptParser.java:242)
> {code}

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