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Posted to users@tomcat.apache.org by k9...@operamail.com on 2012/07/23 21:39:41 UTC

@ Tomcat 7.0.29 shutdown, WARNING -> " Acceptor thread [null] failed to unlock. Forcing hard socket shutdown". It the warning a problem, or ignorable?

I've Tomcat 7.0.29 installed on linux/64.

@ service shutdown,

	sh /etc/init.d/tomcat7 stop

I see in my logs two "WARNING: Acceptor thread [null] failed to unlock.
Forcing hard socket shutdown":

		INFO: Deploying web application directory
		/usr/local/tomcat7/build/webapps/examples
		Jul 23, 2012 11:18:35 AM
		org.apache.catalina.core.ApplicationContext log
		INFO: ContextListener: contextInitialized()
		Jul 23, 2012 11:18:35 AM
		org.apache.catalina.core.ApplicationContext log
		INFO: SessionListener: contextInitialized()
		Jul 23, 2012 11:18:35 AM
		org.apache.catalina.core.ApplicationContext log
		INFO: ContextListener:
		attributeAdded('org.apache.jasper.compiler.TldLocationsCache',
		'org.apache.jasper.compiler.TldLocationsCache@14d6cc5e')
		Jul 23, 2012 11:18:35 AM
		org.apache.catalina.startup.HostConfig deployDirectory
		INFO: Deploying web application directory
		/usr/local/tomcat7/build/webapps/ROOT
		Jul 23, 2012 11:18:35 AM
		org.apache.catalina.startup.HostConfig deployDirectory
		INFO: Deploying web application directory
		/usr/local/tomcat7/build/webapps/host-manager
		Jul 23, 2012 11:18:36 AM
		org.apache.catalina.startup.HostConfig deployDirectory
		INFO: Deploying web application directory
		/usr/local/tomcat7/build/webapps/manager
		Jul 23, 2012 11:18:36 AM
		org.apache.catalina.startup.HostConfig deployDirectory
		INFO: Deploying web application directory
		/usr/local/tomcat7/build/webapps/docs
		Jul 23, 2012 11:18:36 AM
		org.apache.coyote.AbstractProtocol start
		INFO: Starting ProtocolHandler ["http-apr-8080"]
		Jul 23, 2012 11:18:36 AM
		org.apache.coyote.AbstractProtocol start
		INFO: Starting ProtocolHandler ["ajp-apr-8009"]
		Jul 23, 2012 11:18:36 AM
		org.apache.catalina.startup.Catalina start
		INFO: Server startup in 743 ms
		Jul 23, 2012 12:24:12 PM
		org.apache.coyote.AbstractProtocol pause
		INFO: Pausing ProtocolHandler ["http-apr-8080"]
		Jul 23, 2012 12:24:12 PM
		org.apache.coyote.AbstractProtocol pause
		INFO: Pausing ProtocolHandler ["ajp-apr-8009"]
		Jul 23, 2012 12:24:12 PM
		org.apache.catalina.core.StandardService stopInternal
		INFO: Stopping service Catalina
		Jul 23, 2012 12:24:12 PM
		org.apache.catalina.core.ApplicationContext log
		INFO: SessionListener: contextDestroyed()
		Jul 23, 2012 12:24:12 PM
		org.apache.catalina.core.ApplicationContext log
		INFO: ContextListener: contextDestroyed()
		Jul 23, 2012 12:24:12 PM
		org.apache.coyote.AbstractProtocol stop
		INFO: Stopping ProtocolHandler ["http-apr-8080"]
===>            Jul 23, 2012 12:24:22 PM
org.apache.tomcat.util.net.AprEndpoint stopInternal
		WARNING: Acceptor thread [null] failed to unlock.
		Forcing hard socket shutdown.
		Jul 23, 2012 12:24:22 PM
		org.apache.coyote.AbstractProtocol stop
		INFO: Stopping ProtocolHandler ["ajp-apr-8009"]
===>            Jul 23, 2012 12:24:32 PM
org.apache.tomcat.util.net.AprEndpoint stopInternal
		WARNING: Acceptor thread [null] failed to unlock.
		Forcing hard socket shutdown.
		Jul 23, 2012 12:24:32 PM
		org.apache.coyote.AbstractProtocol destroy
		INFO: Destroying ProtocolHandler ["http-apr-8080"]
		Jul 23, 2012 12:24:32 PM
		org.apache.coyote.AbstractProtocol destroy
		INFO: Destroying ProtocolHandler ["ajp-apr-8009"]


I'm not sure how much weight to give these warnings.

Can/should they be ignored?

Or does their cause need to be hunted down and fixed?

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