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https://issues.apache.org/jira/browse/PHOENIX-1976?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Nick Dimiduk resolved PHOENIX-1976.
-----------------------------------
Resolution: Fixed
Fix Version/s: 4.4.1
Master patch applied cleanly across the board. Thanks for keeping an eye out
[~elserj].
> Improve PhoenixDriver registration when addShutdownHook fails
> -------------------------------------------------------------
>
> Key: PHOENIX-1976
> URL: https://issues.apache.org/jira/browse/PHOENIX-1976
> Project: Phoenix
> Issue Type: Bug
> Reporter: Josh Elser
> Assignee: Josh Elser
> Priority: Minor
> Fix For: 5.0.0, 4.5.0, 4.4.1
>
> Attachments: PHOENIX-1976-master.patch
>
>
> Noticed this in running some tests. RegionServer was shutting down and
> MetaDataRegionObserver was just invoking {{postOpen}}
> When the {{Class.forName(PhoenixDriver.class.getName())}} gets called, the
> static initializer in {{PhoenixDriver}} gets invoked. Because the
> RegionServer is already stopping, the {{addShutdownHook}} fails with an
> {{IllegalArgumentException}}.
> It's not a _huge_ concern because we know the JVM is going down, but there
> are a few things we could handle better:
> * Ensure the PhoenixDriver gets closed if the shutdown hook fails to register
> * Avoid registering the PhoenixDriver instance if we're shutting down
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