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https://issues.apache.org/jira/browse/HIVE-13596?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Sergey Shelukhin updated HIVE-13596:
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Attachment: HIVE-13596.02.patch
Updated the patch to add it to the system registry instead, after some
discussion. I changed the synchronized methods to use a lock object without any
logic changes wrt locking, and then took the MS call (and resource acquisition)
out of the lock to avoid bottlenecking on the system registry.
> HS2 should be able to get UDFs on demand from metastore
> -------------------------------------------------------
>
> Key: HIVE-13596
> URL: https://issues.apache.org/jira/browse/HIVE-13596
> Project: Hive
> Issue Type: Bug
> Reporter: Sergey Shelukhin
> Assignee: Sergey Shelukhin
> Attachments: HIVE-13596.01.patch, HIVE-13596.02.patch,
> HIVE-13596.patch
>
>
> When multiple HS2s are run, creating a permanent fn is only executed on one
> of them, and the other HS2s don't get the new function. Unlike say with
> tables, where we always get stuff from db on demand, fns are registered at
> certain points in the code and if the new one is not registered, it will not
> be available.
> We should restore the pre-HIVE-2573 behavior of being able to refresh the
> UDFs on demand.
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