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It is very important that all clustered server machines must have their clocks synchronized.
Severe Startup Log Messges
There are some error message that may get logged in the Tomcat logfiles that can be safely ignored. These errors may occur if you update the frevvo.war file while Tomcat is running rather. It is best to stop the Tomcat server, then update frevvo.war, then restart the Tomcat server. If you always follow that process you should avoid these log messages.
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Sep 4, 2012 11:15:45 AM org.apache.catalina.loader.WebappClassLoader clearReferencesThreads
SEVERE: The web application [/frevvo] appears to have started a thread named [MultiThreadedHttpConnectionManager cleanup] but has failed to stop it. This is very likely to create a memory leak.
Sep 4, 2012 11:15:45 AM org.apache.catalina.loader.WebappClassLoader checkThreadLocalMapForLeaks
SEVERE: The web application [/frevvo] created a ThreadLocal with key of type [qh] (value [qh@5bf7253e]) and a value of type [java.lang.Boolean] (value [true]) 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.
Sep 4, 2012 11:15:45 AM org.apache.catalina.loader.WebappClassLoader checkThreadLocalMapForLeaks
SEVERE: The web application [/frevvo] created a ThreadLocal with key of type [org.eclipse.emf.ecore.xml.type.util.XMLTypeUtil.CharArrayThreadLocal] (value [org.eclipse.emf.ecore.xml.type.util.XMLTypeUtil$CharArrayThreadLocal@2006eb91]) and a value of type [char[]] (value [[C@26538d04]) 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.
Sep 4, 2012 11:15:45 AM org.apache.catalina.loader.WebappClassLoader checkThreadLocalMapForLeaks
SEVERE: The web application [/frevvo] created a ThreadLocal with key of type [np] (value [np@374f1544]) 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.
Sep 4, 2012 11:15:45 AM org.apache.catalina.loader.WebappClassLoader checkThreadLocalMapForLeaks
SEVERE: The web application [/frevvo] created a ThreadLocal with key of type [gt] (value [gt@28fd3fba]) and a value of type [gr] (value [gr@a62e15c]) 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.
Sep 4, 2012 11:15:45 AM org.apache.catalina.loader.WebappClassLoader checkThreadLocalMapForLeaks
SEVERE: The web application [/frevvo] created a ThreadLocal with key of type [np] (value [np@374f1544]) 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.
Sep 4, 2012 11:15:45 AM org.apache.catalina.loader.WebappClassLoader checkThreadLocalMapForLeaks
SEVERE: The web application [/frevvo] created a ThreadLocal with key of type [java.lang.ThreadLocal] (value [java.lang.ThreadLocal@61b96457]) and a value of type [org.infinispan.context.SingleKeyNonTxInvocationContext] (value [SingleKeyNonTxInvocationContext{flags=null}]) 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.
Sep 4, 2012 11:15:45 AM org.apache.catalina.loader.WebappClassLoader checkThreadLocalMapForLeaks
SEVERE: The web application [/frevvo] created a ThreadLocal with key of type [org.jgroups.protocols.FlowControl$1] (value [org.jgroups.protocols.FlowControl$1@5dd7e765]) 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.
Sep 4, 2012 11:15:45 AM org.apache.catalina.loader.WebappClassLoader checkThreadLocalMapForLeaks
SEVERE: The web application [/frevvo] created a ThreadLocal with key of type [org.infinispan.marshall.jboss.AbstractJBossMarshaller$1] (value [org.infinispan.marshall.jboss.AbstractJBossMarshaller$1@998c805]) and a value of type [org.infinispan.marshall.jboss.AbstractJBossMarshaller.PerThreadInstanceHolder] (value [org.infinispan.marshall.jboss.AbstractJBossMarshaller$PerThreadInstanceHolder@d73c52f]) 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.
Sep 4, 2012 11:15:45 AM org.apache.catalina.loader.WebappClassLoader checkThreadLocalMapForLeaks
SEVERE: The web application [/frevvo] created a ThreadLocal with key of type [org.jboss.marshalling.UTFUtils.BytesHolder] (value [org.jboss.marshalling.UTFUtils$BytesHolder@2bb843a4]) and a value of type [byte[]] (value [[B@4e60da68]) 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.
Sep 4, 2012 11:15:45 AM org.apache.catalina.loader.WebappClassLoader checkThreadLocalMapForLeaks
SEVERE: The web application [/frevvo] created a ThreadLocal with key of type [org.jgroups.protocols.FlowControl$1] (value [org.jgroups.protocols.FlowControl$1@38a30a0b]) 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. |
Server Shutdown
Additional form server nodes can be dynamically hot swapped (added and removed) from a cluster. Once you have signaled one of the servers in your cluster to stop, that server will immediately start rejecting new form requests; wait for existing activities such as rule execution to complete and only then shutdown the node. Your servlet container (ex:Tomcat or WLS, etc) should handle this function correctly.
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