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http://jira.qos.ch/browse/LBCLASSIC-183?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=11747#action_11747
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Greg Thomas commented on LBCLASSIC-183:
---------------------------------------
If it helps, at all, I'm seeing exactly the same issue on Tomcat 6.0.26/Windows
- however with ch.qos.logback.classic.util.CopyOnInheritThreadLocal instead of
org.slf4j.impl.CopyOnInheritThreadLocal. To take a couple of examples ...
SEVERE: A web application created a ThreadLocal with key of type [null] (value
[ch.qos.logback.core.unsynchronizedappenderbas...@ba3671]) 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.
SEVERE: A web application created a ThreadLocal with key of type
[ch.qos.logback.classic.util.CopyOnInheritThreadLocal] (value
[ch.qos.logback.classic.util.copyoninheritthreadlo...@12704b3]) and a value of
type [java.util.HashMap] (value
[{callid=e4ac4593-1f59-4801-9671-078eb6e5c86b}]) but failed to remove it when
the web application was stopped. To prevent a memory leak, the ThreadLocal has
been forcibly removed.
> 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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