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https://issues.apache.org/jira/browse/PIG-1202?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Richard Ding resolved PIG-1202.
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Resolution: Duplicate
Trace it in PIG-1212.
> explain plan throws out exception
> ----------------------------------
>
> Key: PIG-1202
> URL: https://issues.apache.org/jira/browse/PIG-1202
> Project: Pig
> Issue Type: Bug
> Reporter: Ying He
>
> run the following script
> a = load 's/part*' as (id:int, f:chararray);
> b = load 's/part*' as (id:int, f:chararray);
> c = join a by id, b by id;
> d = filter c by a::f == 'apple';
> explain d;
> got error message:
> ERROR 1067: Unable to explain alias d
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