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From "Claus Ibsen (JIRA)" <j...@apache.org>
Subject [jira] [Resolved] (AMQ-3807) MBeans are not unregistered under WebSphere
Date Sat, 08 Sep 2012 10:58:07 GMT

     [ https://issues.apache.org/jira/browse/AMQ-3807?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Claus Ibsen resolved AMQ-3807.
------------------------------

    Resolution: Fixed
    
> MBeans are not unregistered under WebSphere
> -------------------------------------------
>
>                 Key: AMQ-3807
>                 URL: https://issues.apache.org/jira/browse/AMQ-3807
>             Project: ActiveMQ
>          Issue Type: Bug
>          Components: Broker, JMX
>         Environment: WebSphere 7
>            Reporter: christian ohr
>            Assignee: Claus Ibsen
>            Priority: Minor
>             Fix For: 5.7.0
>
>         Attachments: ManagementContext.patch
>
>
> When running ActiveMQ in embedded mode under WebSphere (I know that this is not a typical
JEE-compliant deployment)  the ObjectNames of the registered MBeans are modified by the container.
Unfortunately, ActiveMQ fails to keep these names. As a result, ActiveMQ does not unregister
its beans when an application is stopped, and a restart causes InstanceAlreadyExistExceptions.
> The following change to ManagementContext.java may help:
> Currently:
> {code}
> public ObjectInstance registerMBean(Object bean, ObjectName name) throws Exception {
>         ObjectInstance result = getMBeanServer().registerMBean(bean, name);
>         this.registeredMBeanNames.add(name);
>         return result;
>     }
> {code}
> but it should be something like:
> {code}
> public ObjectInstance registerMBean(Object bean, ObjectName name) throws Exception {
>         ObjectInstance result = getMBeanServer().registerMBean(bean, name);
>         if (result != null) this.registeredMBeanNames.add(result.getObjectName);
>         return result;
>     }
> {code}

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