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From "Rohini Palaniswamy (JIRA)" <j...@apache.org>
Subject [jira] [Assigned] (PIG-3000) Optimize nested foreach
Date Fri, 15 Jun 2018 15:36:00 GMT

     [ https://issues.apache.org/jira/browse/PIG-3000?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Rohini Palaniswamy reassigned PIG-3000:
---------------------------------------

    Assignee: Rohini Palaniswamy  (was: Mona Chitnis)

This is being addressed as part of PIG-5256

> Optimize nested foreach
> -----------------------
>
>                 Key: PIG-3000
>                 URL: https://issues.apache.org/jira/browse/PIG-3000
>             Project: Pig
>          Issue Type: Bug
>          Components: impl
>    Affects Versions: 0.10.0
>            Reporter: Richard Ding
>            Assignee: Rohini Palaniswamy
>            Priority: Major
>         Attachments: PIG-3000-6.patch, unit_tests.patch
>
>
> In this Pig script:
> {code}
> A = load 'data' as (a:chararray);
> B = foreach A { c = UPPER(a); generate ((c eq 'TEST') ? 1 : 0), ((c eq 'DEV') ? 1 : 0);
}
> {code}
> The Eval function UPPER is called twice for each record.
> This should be optimized so that the UPPER is called only once for each record



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