Confluence Hangs and Throw Errors During Shutdown but doesn't stop

2015-10-21 12:23:13,174 ERROR [localhost-startStop-2] [internal.util.concurrent.RunnableTimedExecution] execute Closing runnable for context NonValidatingOsgiBundleXmlApplicationContext(bundle=com.atlassian.plugin.notifications.notifications-module, config=osgibundle:/META-INF/spring/*.xml) did not finish in 10000ms; consider taking a snapshot and then shutdown the VM in case the thread still hangs
2015-10-21 12:23:13,174 ERROR [localhost-startStop-2] [support.internal.aop.ServiceDynamicInterceptor] serviceChanged Exception during service event handling
java.lang.IllegalStateException: Invalid BundleContext.
	at org.apache.felix.framework.BundleContextImpl.checkValidity(BundleContextImpl.java:514)
	at org.apache.felix.framework.BundleContextImpl.getServiceReferences(BundleContextImpl.java:425)
	at org.springframework.osgi.util.OsgiServiceReferenceUtils.getServiceReferences(OsgiServiceReferenceUtils.java:159)
	at org.springframework.osgi.util.OsgiServiceReferenceUtils.getServiceReference(OsgiServiceReferenceUtils.java:76)
	at org.springframework.osgi.service.importer.support.internal.aop.ServiceDynamicInterceptor$Listener.serviceChanged(ServiceDynamicInterceptor.java:195)
	at org.apache.felix.framework.util.EventDispatcher.invokeServiceListenerCallback(EventDispatcher.java:932)
	at org.apache.felix.framework.util.EventDispatcher.fireEventImmediately(EventDispatcher.java:793)
	at org.apache.felix.framework.util.EventDispatcher.fireServiceEvent(EventDispatcher.java:543)
	at org.apache.felix.framework.Felix.fireServiceEvent(Felix.java:4419)
	at org.apache.felix.framework.Felix.access$000(Felix.java:74)
	at org.apache.felix.framework.Felix$1.serviceChanged(Felix.java:401)
	at org.apache.felix.framework.ServiceRegistry.unregisterService(ServiceRegistry.java:151)
	at org.apache.felix.framework.ServiceRegistrationImpl.unregister(ServiceRegistrationImpl.java:127)
	at org.apache.felix.framework.ServiceRegistry.unregisterServices(ServiceRegistry.java:196)
	at org.apache.felix.framework.Felix.stopBundle(Felix.java:2555)
	at org.apache.felix.framework.Felix.uninstallBundle(Felix.java:2632)
	at org.apache.felix.framework.BundleImpl.uninstall(BundleImpl.java:1022)
	at com.atlassian.plugin.osgi.factory.OsgiPlugin.uninstallInternal(OsgiPlugin.java:503)
	at com.atlassian.plugin.impl.AbstractPlugin.uninstall(AbstractPlugin.java:425)
	at com.atlassian.plugin.impl.AbstractDelegatingPlugin.uninstall(AbstractDelegatingPlugin.java:196)
	at com.atlassian.plugin.loaders.ScanningPluginLoader.onShutdown(ScanningPluginLoader.java:245)
	at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
	at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)
	at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
	at java.lang.reflect.Method.invoke(Unknown Source)
	at com.atlassian.event.internal.SingleParameterMethodListenerInvoker.invoke(SingleParameterMethodListenerInvoker.java:36)
	at com.atlassian.event.internal.AsynchronousAbleEventDispatcher$1$1.run(AsynchronousAbleEventDispatcher.java:48)
	at com.google.common.util.concurrent.MoreExecutors$SameThreadExecutorService.execute(MoreExecutors.java:253)
	at com.atlassian.event.internal.AsynchronousAbleEventDispatcher.dispatch(AsynchronousAbleEventDispatcher.java:107)
	at com.atlassian.event.internal.EventPublisherImpl.invokeListeners(EventPublisherImpl.java:160)
	at com.atlassian.event.internal.EventPublisherImpl.publish(EventPublisherImpl.java:79)
	at com.atlassian.confluence.event.TimingEventPublisher.publish(TimingEventPublisher.java:73)
	at com.atlassian.plugin.event.impl.DefaultPluginEventManager.broadcast(DefaultPluginEventManager.java:73)
	at com.atlassian.plugin.manager.DefaultPluginManager.broadcast(DefaultPluginManager.java:608)
	at com.atlassian.plugin.manager.DefaultPluginManager.shutdown(DefaultPluginManager.java:598)
	at com.atlassian.confluence.plugin.PluginFrameworkContextListener.contextDestroyed(PluginFrameworkContextListener.java:77)
	at org.apache.catalina.core.StandardContext.listenerStop(StandardContext.java:4776)
	at org.apache.catalina.core.StandardContext.stopInternal(StandardContext.java:5390)
	at org.apache.catalina.util.LifecycleBase.stop(LifecycleBase.java:232)
	at org.apache.catalina.core.ContainerBase$StopChild.call(ContainerBase.java:1424)
	at org.apache.catalina.core.ContainerBase$StopChild.call(ContainerBase.java:1413)
	at java.util.concurrent.FutureTask.run(Unknown Source)
	at java.util.concurrent.ThreadPoolExecutor.runWorker(Unknown Source)
	at java.util.concurrent.ThreadPoolExecutor$Worker.run(Unknown Source)
	at java.lang.Thread.run(Unknown Source)