[
https://issues.apache.org/jira/browse/AMQ-4008?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13445779#comment-13445779
]
Claus Ibsen commented on AMQ-4008:
----------------------------------
After digging for a while, its due to MDC being inherited by child threads, eg
Log4j code
{code}
ThreadLocalMap extends InheritableThreadLocal
{code}
We don't have a way to control this, the issue is JMX that does all kind of
crap causing MDC leaks, as we cannot tell the **** to not inheirt, or to clear
the MDC when threads is terminated.
> Tomcat WARN on shutdown about ThreadLocal not cleared from log4j
> ----------------------------------------------------------------
>
> Key: AMQ-4008
> URL: https://issues.apache.org/jira/browse/AMQ-4008
> Project: ActiveMQ
> Issue Type: Improvement
> Components: Broker
> Affects Versions: 5.6.0
> Reporter: Claus Ibsen
> Assignee: Claus Ibsen
> Priority: Minor
> Fix For: 5.7.0
>
>
> SEVERE: The web application [/camel-example-activemq-tomcat] created a
> ThreadLocal with key of type [org.apache.log4j.helpers.ThreadLocalMap] (value
> [org.apache.log4j.helpers.ThreadLocalMap@1eb0cd0]) and a value of type
> [java.util.Hashtable] (value [{activemq.broker=myBroker}]) but failed to
> remove it when the web application was stopped. Threads are going to be
> renewed over time to try and avoid a probable memory leak.
> I got a bit annoyed by this when I was working on a new example for Apache
> Camel with an embedded AMQ broker. So I am digging into fixing this. Its in
> the start() method.
--
This message is automatically generated by JIRA.
If you think it was sent incorrectly, please contact your JIRA administrators
For more information on JIRA, see: http://www.atlassian.com/software/jira
