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http://jira.qos.ch/browse/LBCLASSIC-183?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=11861#action_11861
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Ceki Gulcu edited comment on LBCLASSIC-183 at 10/18/10 8:27 PM:
----------------------------------------------------------------

Carey, 

After testing if overriding tyhreadLocal.initialValue() changes anything, in 
particular with respect to ThreadLocalMap referring to the web-app's class 
loader, I can confirm that it does the trick, i.e. makes Tomcat happy.

      was (Author: [email protected]):
    Carey, 

I am going to test to see if overriding yhreadLocal.initialValue() changes 
anything, in particular with respect to ThreadLocalMap referring to the 
web-app's class loader. 
  
> Tomcat reports SEVERE ThreadLocal issues upon shutdown
> ------------------------------------------------------
>
>                 Key: LBCLASSIC-183
>                 URL: http://jira.qos.ch/browse/LBCLASSIC-183
>             Project: logback-classic
>          Issue Type: Bug
>    Affects Versions: 0.9.18
>         Environment: Tomcat 6.0.24, JDK 6, Windows or Solaris
>            Reporter: Anthony Whitford
>            Assignee: Ceki Gulcu
>
> I have a webapp that uses Logback, deployed on a Tomcat instance.  Upon 
> shutdown, Tomcat reports this and doesn't completely shut down:
> SEVERE: A web application created a ThreadLocal with key of type 
> [org.slf4j.impl.CopyOnInheritThreadLocal] (value 
> [org.slf4j.impl.copyoninheritthreadlo...@1bb35
> b]) and a value of type [null] (value [null]) but failed to remove it when 
> the web application was stopped. To prevent a memory leak, the ThreadLocal 
> has been forcibly removed.
> Feb 3, 2010 10:49:22 PM org.apache.catalina.loader.WebappClassLoader 
> clearThreadLocalMap
> SEVERE: A web application created a ThreadLocal with key of type [null] 
> (value [ch.qos.logback.core.unsynchronizedappenderbas...@10e2558]) and a 
> value of type [java.lang.Boolean] (value [false]) but failed to remove it 
> when the web application was stopped. To prevent a memory leak, the 
> ThreadLocal has been forcibly removed.
> Is LogBack leaking resources?

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