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https://issues.apache.org/jira/browse/HIVE-10728?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14555085#comment-14555085
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Ashutosh Chauhan commented on HIVE-10728:
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I will let [~alangates] comment on whats the policy for deprecating udfs.
Throwing exception as you have done I see breaks backward compatibility.
> deprecate unix_timestamp(void) and make it deterministic
> --------------------------------------------------------
>
> Key: HIVE-10728
> URL: https://issues.apache.org/jira/browse/HIVE-10728
> Project: Hive
> Issue Type: Bug
> Reporter: Sergey Shelukhin
> Assignee: Sergey Shelukhin
> Attachments: HIVE-10728.01.patch, HIVE-10728.patch
>
>
> We have a proper current_timestamp function that is not evaluated at runtime.
> Behavior of unix_timestamp(void) is both surprising, and is preventing some
> optimizations on the other overload since the function becomes
> non-deterministic.
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