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From "Abdullah Yousufi (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HIVE-14074) RELOAD FUNCTION should update dropped functions
Date Wed, 22 Jun 2016 17:14:57 GMT

    [ https://issues.apache.org/jira/browse/HIVE-14074?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15344758#comment-15344758
] 

Abdullah Yousufi commented on HIVE-14074:
-----------------------------------------

No I don't believe that should be an issue because the function registry is local to the session.
So other sessions won't experience any changes with their functions until they reload their
functions. And when the other sessions do reload their functions, they will be reading from
the metastore, which is thread safe.

> 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
>
>
> 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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