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https://issues.apache.org/jira/browse/HIVE-21499?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16803360#comment-16803360
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Thejas M Nair commented on HIVE-21499:
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Also can you use {} for the "if" statement. That makes it less error prone.
(Famous example - https://blog.codecentric.de/en/2014/02/curly-braces/ )
> should not remove the function from registry if create command failed with
> AlreadyExistsException
> -------------------------------------------------------------------------------------------------
>
> Key: HIVE-21499
> URL: https://issues.apache.org/jira/browse/HIVE-21499
> Project: Hive
> Issue Type: Bug
> Components: Hive
> Affects Versions: 3.1.0
> Environment: Hive-3.1
> Reporter: Rajkumar Singh
> Assignee: Rajkumar Singh
> Priority: Major
> Attachments: HIVE-21499.patch
>
>
> As a part of HIVE-20953 we are removing the function if creation for same
> failed with any reason, this will yield into the following situation.
> 1. create function failed since function already exists
> 2. on #1 failure hive will clear the permanent function from the registry
> 3. this function will be of no use until hiveserver2 restarted.
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