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https://issues.apache.org/jira/browse/HIVE-2532?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13138599#comment-13138599
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Jonathan Chang commented on HIVE-2532:
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Ooo, how about a counter diff?
> 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
>
> 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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