[logback-dev] [JIRA] Commented: (LBCLASSIC-33) unregistering in the jmx plugin

Joern Huxhorn (JIRA) noreply-jira at qos.ch
Tue Oct 28 17:27:21 CET 2008

    [ http://jira.qos.ch/browse/LBCLASSIC-33?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=10824#action_10824 ] 

Joern Huxhorn commented on LBCLASSIC-33:

I just checked this with a simple hello-world-webapp using tomcat 6.0.18.

With <jmxConfigurator/> contained in logback.xml the classloader of the webapp will never be garbage-collected on re- or undeploy. All classes of the webapp remain in the heap dump.

If I remove <jmxConfigurator/> the webapp is unloaded properly.

This is quite bad...

See also:

> unregistering in the jmx plugin
> -------------------------------
>                 Key: LBCLASSIC-33
>                 URL: http://jira.qos.ch/browse/LBCLASSIC-33
>             Project: logback-classic
>          Issue Type: Bug
>          Components: Other
>    Affects Versions: unspecified
>         Environment: Operating System: All
> Platform: All
>            Reporter: Hontvári József
>            Assignee: Logback dev list
> I started using the JMX plugin of login, and I wondered how should I
> shut it down when a web application is restarted. I haven't found a
> function which unregisters the Configurator MBean. This object holds a
> reference (through ContextAwareBase) to a Context. I am afraid that not
> unregistering it causes a memory leak when a web application is restarted. 
> There should be a way to shutdown the JMX plugin. Or more generally an API to shut down the Logback system in its entirety: flush buffers, close files etc. It must be decided what to do if a log request arrives when or after logback is shutting down.

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