[jira] [Reopened] (PIG-4511) Add columns to prune from PluckTuple

["Daniel Dai (JIRA)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/PIG-4511?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Daniel Dai reopened PIG-4511:
-----------------------------

Thanks for checking, [~cheolsoo]. I temporarily reverted the patch until the issue solved.

> Add columns to prune from PluckTuple
> ------------------------------------
>
>                 Key: PIG-4511
>                 URL: https://issues.apache.org/jira/browse/PIG-4511
>             Project: Pig
>          Issue Type: Improvement
>    Affects Versions: 0.14.0
>            Reporter: Joseph Babcock
>            Assignee: Joseph Babcock
>            Priority: Minor
>             Fix For: 0.15.0
>
>         Attachments: pluckTuple.patch
>
>
> Currently pluckTuple returns all columns in relation that match a prefix predicate. This patch allows a variable argument list of column names following the predicate to remove from the alias. 
> Example:
> a = load 'a' as (x:int,y:chararray,z:long)
> b = load 'b' as (x:int,y:chararray,z:long)
> c = join a by x, b by x;
> Define pluck PluckTuple('a::','x',z')
> -- returns y from a only



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