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https://issues.apache.org/jira/browse/HIVE-14074?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15375929#comment-15375929
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Abdullah Yousufi commented on HIVE-14074:
-----------------------------------------
Yeah the regex will return all permanent UDFs, as the format for those
functions is "<db_name>.<function_name>". This will exclude built-in and
temporary functions, which should not be affected by the reload.
> RELOAD FUNCTION should update dropped functions
> -----------------------------------------------
>
> Key: HIVE-14074
> URL: https://issues.apache.org/jira/browse/HIVE-14074
> Project: Hive
> Issue Type: Bug
> Affects Versions: 2.0.1
> Reporter: Abdullah Yousufi
> Assignee: Abdullah Yousufi
> Fix For: 2.2.0
>
> Attachments: HIVE-14074.01.patch, HIVE-14074.02.patch,
> HIVE-14074.03.patch
>
>
> Due to HIVE-2573, functions are stored in a per-session registry and only
> loaded in from the metastore when hs2 or hive cli is started. Running RELOAD
> FUNCTION in the current session is a way to force a reload of the functions,
> so that changes that occurred in other running sessions will be reflected in
> the current session, without having to restart the current session. However,
> while functions that are created in other sessions will now appear in the
> current session, functions that have been dropped are not removed from the
> current session's registry. It seems inconsistent that created functions are
> updated while dropped functions are not.
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