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https://issues.apache.org/jira/browse/HIVE-17008?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16101019#comment-16101019
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Dan Burkert commented on HIVE-17008:
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[~akolb] I'm playing around with a fix
[here|https://github.com/danburkert/hive/commit/e8b2527ae0fbdff1df2a3b102cba1e0c3cd89e4b?w=1],
but it doesn't appear to work quite correctly. It's fine with me if someone
else wants to jump on this an assign it to themselves; I think it should be a
high priority bug.
> DbNotificationListener should skip failed events
> ------------------------------------------------
>
> Key: HIVE-17008
> URL: https://issues.apache.org/jira/browse/HIVE-17008
> Project: Hive
> Issue Type: Bug
> Components: Metastore
> Reporter: Dan Burkert
> Assignee: Dan Burkert
> Attachments: HIVE-17008.0.patch
>
>
> When dropping a non-existent database, the HMS will still fire registered
> {{DROP_DATABASE}} event listeners. This results in an NPE when the listeners
> attempt to deref the {{null}} database parameter.
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