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From "Nick Dimiduk (JIRA)" <j...@apache.org>
Subject [jira] [Updated] (PHOENIX-1976) Improve PhoenixDriver registration when addShutdownHook fails
Date Mon, 18 May 2015 17:25:00 GMT

     [ https://issues.apache.org/jira/browse/PHOENIX-1976?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Nick Dimiduk updated PHOENIX-1976:
----------------------------------
    Assignee: Josh Elser

Never mind; I have the power :)

Thanks for the patch [~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
>
>         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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