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https://issues.apache.org/jira/browse/HIVE-12531?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15034428#comment-15034428
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Sergey Shelukhin commented on HIVE-12531:
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Hmm. I wonder how much faster that is. +1 for now pending test run
> Implement fast-path for Year/Month UDFs for dates between 1999 and 2038
> -----------------------------------------------------------------------
>
> Key: HIVE-12531
> URL: https://issues.apache.org/jira/browse/HIVE-12531
> Project: Hive
> Issue Type: Improvement
> Reporter: Gopal V
> Assignee: Sergey Shelukhin
> Attachments: HIVE-12531.1.patch
>
>
> Current codepath goes into the JDK Calendar implementation, which is very
> slow for the simple cases in the current decade.
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