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From "Dmitriy V. Ryaboy (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (PIG-3010) Allow UDF's to flatten themselves
Date Thu, 13 Dec 2012 01:49:22 GMT

    [ https://issues.apache.org/jira/browse/PIG-3010?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13530601#comment-13530601

Dmitriy V. Ryaboy commented on PIG-3010:

can you regenerate without the ws changes? 285Kb patch..
> Allow UDF's to flatten themselves
> ---------------------------------
>                 Key: PIG-3010
>                 URL: https://issues.apache.org/jira/browse/PIG-3010
>             Project: Pig
>          Issue Type: Improvement
>            Reporter: Jonathan Coveney
>            Assignee: Jonathan Coveney
>             Fix For: 0.12
>         Attachments: PIG-3010-0.patch, PIG-3010-1.patch, PIG-3010-2.patch
> This is something I thought would be cool for a while, so I sat down and did it because
I think there are some useful debugging tools it'd help with.
> The idea is that if you attach an annotation to a UDF, the Tuple or DataBag you output
will be flattened. This is quite powerful. A very common pattern is:
> a = foreach data generate Flatten(MyUdf(thing)) as (a,b,c);
> This would let you just do:
> a = foreach data generate MyUdf(thing);
> With the exact same result!

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