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https://issues.apache.org/jira/browse/PIG-1112?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Olga Natkovich updated PIG-1112:
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Fix Version/s: 0.9.0
> FLATTEN eliminates the alias
> ----------------------------
>
> Key: PIG-1112
> URL: https://issues.apache.org/jira/browse/PIG-1112
> Project: Pig
> Issue Type: Bug
> Reporter: Ankur
> Assignee: Daniel Dai
> Fix For: 0.9.0
>
>
> If schema for a field of type 'bag' is partially defined then FLATTEN()
> incorrectly eliminates the field and throws an error.
> Consider the following example:-
> A = LOAD 'sample' using PigStorage() as (first:chararray, second:chararray,
> ladder:bag{});
> B = FOREACH A GENERATE first,FLATTEN(ladder) as third,second;
>
> C = GROUP B by (first,third);
> This throws the error
> ERROR org.apache.pig.tools.grunt.Grunt - ERROR 1000: Error during parsing.
> Invalid alias: third in {first: chararray,second: chararray}
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