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From "Jonathan Chang (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HIVE-2532) Evaluation of non-deterministic/stateful UDFs should not be skipped even if constant oi is returned.
Date Thu, 02 Aug 2012 09:29:03 GMT

    [ https://issues.apache.org/jira/browse/HIVE-2532?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13427197#comment-13427197
] 

Jonathan Chang commented on HIVE-2532:
--------------------------------------

It's ok by me if you want to return a bool instead.  That being said, things should not crash
if things are NULL (I think this was a recent regression and there's a JIRA open for it).
                
> Evaluation of non-deterministic/stateful UDFs should not be skipped even if constant
oi is returned.
> ----------------------------------------------------------------------------------------------------
>
>                 Key: HIVE-2532
>                 URL: https://issues.apache.org/jira/browse/HIVE-2532
>             Project: Hive
>          Issue Type: Bug
>            Reporter: Jonathan Chang
>            Assignee: Jonathan Chang
>             Fix For: 0.8.0
>
>         Attachments: D273.1.patch, D273.2.patch, D273.3.patch, D273.4.patch, D273.4.patch,
D273.4.patch
>
>
> Even if constant oi is returned, these may have stateful/side-effect behavior and hence
need to be called each cycle.

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