ThreadLocal leaks discovered after enabling Tomcat 7 ThreadLocal detection listener ----------------------------------------------------------------------------------- Key: JGRP-1655 URL: https://issues.jboss.org/browse/JGRP-1655 Project: JGroups Issue Type: Bug Affects Versions: 3.3.2 Reporter: Manuel Dominguez Sarmiento Assignee: Bela Ban Fix For: 3.4 After enabling Tomcat 7's org.apache.catalina.core.ThreadLocalLeakPreventionListener, we found this while undeploying our webapp: Jul 12, 2013 11:19:04 PM org.apache.catalina.loader.WebappClassLoader checkThreadLocalMapForLeaks SEVERE: The web application [/cms] created a ThreadLocal with key of type [org.jgroups.protocols.FlowControl$1] (value [org.jgroups.protocols.FlowControl$1@536c4bc7]) and a value of type [java.lang.Boolean] (value [false]) 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. Jul 12, 2013 11:19:04 PM org.apache.catalina.loader.WebappClassLoader checkThreadLocalMapForLeaks SEVERE: The web application [/cms] created a ThreadLocal with key of type [org.jgroups.protocols.FlowControl$1] (value [org.jgroups.protocols.FlowControl$1@536c4bc7]) and a value of type [java.lang.Boolean] (value [false]) 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. Jul 12, 2013 11:19:04 PM org.apache.catalina.loader.WebappClassLoader checkThreadLocalMapForLeaks SEVERE: The web application [/cms] created a ThreadLocal with key of type [org.jgroups.protocols.FlowControl$1] (value [org.jgroups.protocols.FlowControl$1@536c4bc7]) and a value of type [java.lang.Boolean] (value [false]) 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. Jul 12, 2013 11:19:04 PM org.apache.catalina.loader.WebappClassLoader checkThreadLocalMapForLeaks SEVERE: The web application [/cms] created a ThreadLocal with key of type [org.jgroups.protocols.FlowControl$1] (value [org.jgroups.protocols.FlowControl$1@536c4bc7]) and a value of type [java.lang.Boolean] (value [false]) 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. Jul 12, 2013 11:19:04 PM org.apache.catalina.loader.WebappClassLoader checkThreadLocalMapForLeaks SEVERE: The web application [/cms] created a ThreadLocal with key of type [org.jgroups.protocols.FlowControl$1] (value [org.jgroups.protocols.FlowControl$1@536c4bc7]) and a value of type [java.lang.Boolean] (value [false]) 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. Jul 12, 2013 11:19:04 PM org.apache.catalina.loader.WebappClassLoader checkThreadLocalMapForLeaks SEVERE: The web application [/cms] created a ThreadLocal with key of type [org.jgroups.protocols.FlowControl$1] (value [org.jgroups.protocols.FlowControl$1@536c4bc7]) and a value of type [java.lang.Boolean] (value [false]) 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. Jul 12, 2013 11:19:04 PM org.apache.catalina.loader.WebappClassLoader checkThreadLocalMapForLeaks SEVERE: The web application [/cms] created a ThreadLocal with key of type [org.jgroups.protocols.FlowControl$1] (value [org.jgroups.protocols.FlowControl$1@536c4bc7]) and a value of type [java.lang.Boolean] (value [false]) 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. Jul 12, 2013 11:19:04 PM org.apache.catalina.loader.WebappClassLoader checkThreadLocalMapForLeaks SEVERE: The web application [/cms] created a ThreadLocal with key of type [org.jgroups.protocols.FlowControl$1] (value [org.jgroups.protocols.FlowControl$1@536c4bc7]) and a value of type [java.lang.Boolean] (value [false]) 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. Jul 12, 2013 11:19:04 PM org.apache.catalina.loader.WebappClassLoader checkThreadLocalMapForLeaks SEVERE: The web application [/cms] created a ThreadLocal with key of type [org.jgroups.protocols.FlowControl$1] (value [org.jgroups.protocols.FlowControl$1@536c4bc7]) and a value of type [java.lang.Boolean] (value [false]) 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. Jul 12, 2013 11:19:04 PM org.apache.catalina.loader.WebappClassLoader checkThreadLocalMapForLeaks SEVERE: The web application [/cms] created a ThreadLocal with key of type [java.lang.ThreadLocal] (value [java.lang.ThreadLocal@6ae3209a]) and a value of type [org.jgroups.protocols.TP.ProtocolAdapter] (value [locks (21)]) 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. Jul 12, 2013 11:19:04 PM org.apache.catalina.loader.WebappClassLoader checkThreadLocalMapForLeaks SEVERE: The web application [/cms] created a ThreadLocal with key of type [org.jgroups.protocols.FlowControl$1] (value [org.jgroups.protocols.FlowControl$1@536c4bc7]) and a value of type [java.lang.Boolean] (value [false]) 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. Jul 12, 2013 11:19:04 PM org.apache.catalina.loader.WebappClassLoader checkThreadLocalMapForLeaks SEVERE: The web application [/cms] created a ThreadLocal with key of type [org.jgroups.protocols.FlowControl$1] (value [org.jgroups.protocols.FlowControl$1@536c4bc7]) and a value of type [java.lang.Boolean] (value [false]) 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. Jul 12, 2013 11:19:04 PM org.apache.catalina.loader.WebappClassLoader checkThreadLocalMapForLeaks SEVERE: The web application [/cms] created a ThreadLocal with key of type [org.jgroups.protocols.FlowControl$1] (value [org.jgroups.protocols.FlowControl$1@536c4bc7]) and a value of type [java.lang.Boolean] (value [false]) 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. Jul 12, 2013 11:19:04 PM org.apache.catalina.loader.WebappClassLoader checkThreadLocalMapForLeaks SEVERE: The web application [/cms] created a ThreadLocal with key of type [org.jgroups.protocols.FlowControl$1] (value [org.jgroups.protocols.FlowControl$1@536c4bc7]) and a value of type [java.lang.Boolean] (value [false]) 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. Jul 12, 2013 11:19:04 PM org.apache.catalina.loader.WebappClassLoader checkThreadLocalMapForLeaks