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From "Nick Dimiduk (JIRA)" <j...@apache.org>
Subject [jira] [Resolved] (PHOENIX-1976) Improve PhoenixDriver registration when addShutdownHook fails
Date Mon, 01 Jun 2015 19:20:17 GMT

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

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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