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https://issues.apache.org/jira/browse/PIG-1737?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12933976#action_12933976
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Thejas M Nair commented on PIG-1737:
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+1
Please commit once test-patch and unit tests pass.
> New logical plan: Improve error messages when merge schema fail
> ---------------------------------------------------------------
>
> Key: PIG-1737
> URL: https://issues.apache.org/jira/browse/PIG-1737
> Project: Pig
> Issue Type: Bug
> Components: impl
> Affects Versions: 0.8.0
> Reporter: Daniel Dai
> Assignee: Daniel Dai
> Fix For: 0.8.0
>
> Attachments: PIG-1737-1.patch, PIG-1737-2.patch
>
>
> Pig fail when foreach schema does not match user defined schema with the NPE.
> The error message should be enhanced. Eg:
> {code}
> a = load '1.txt' as (a0, a1, a2);
> b = group a by (a0, a1);
> c = foreach b generate flatten(group) as c0;
> dump c;
> {code}
> flatten(group) contains 2 items, user cannot name it into c0 alone. However,
> Pig die with NPE, which is clueless to the user.
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