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From "Gary Tully (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (AMQ-4033) AMQ Broker - Uses custom RMIServerSocketFactory class which cannot be unloaded due socket reuse
Date Mon, 10 Sep 2012 11:47:07 GMT

    [ https://issues.apache.org/jira/browse/AMQ-4033?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13451908#comment-13451908
] 

Gary Tully commented on AMQ-4033:
---------------------------------

I think it is safe to remove that soReuseAddr, I am not convinced that it is really a problem
for the ci builds. If it proves to be, we can pull it back in conditionally.
We know now it is a problem for embedded brokers.
                
> AMQ Broker - Uses custom RMIServerSocketFactory class which cannot be unloaded due socket
reuse
> -----------------------------------------------------------------------------------------------
>
>                 Key: AMQ-4033
>                 URL: https://issues.apache.org/jira/browse/AMQ-4033
>             Project: ActiveMQ
>          Issue Type: Bug
>          Components: Broker, JMX
>    Affects Versions: 5.6.0
>            Reporter: Claus Ibsen
>            Assignee: Claus Ibsen
>            Priority: Minor
>         Attachments: MMC.png
>
>
> When embedding ActiveMQ Broker in a container, such as Tomcat or others. And if you have
JMX enabled on the broker, then a RMI registry is created to allow JMX/RMI over TCP.
> This uses a custom RMIServerSocketFactory that gets enlisted into the JDK RMI registry.
But when you undeploy the AMQ broker, there is no API in the JDK to unregister your custom
RMIServerSocketFactory class.
> And therefore the JDK (system class) has a strong reference to the custom RMIServerSocketFactory,
which prevents the container classloader to fully unload all classes.
> Disabling JMX on the broker, allows to unload all the classes.

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