[KARAF-2981] Karaf shutdown hangs in SshServer.stop()

• Type: Bug
• Status: Resolved
• Priority: Major
• Resolution: Fixed
• Affects Version/s: 2.3.4
• Fix Version/s: 2.4.0, 3.0.2, 2.3.7, 4.0.0.M3
• Assignee: Jean-Baptiste Onofré
• Reporter: Martin Lichtin
• Created: 15/May/14 10:55
• Updated: 05/Aug/14 13:28
• Resolved: 05/Aug/14 13:28

Description

Karaf shutdown hangs forever. Thread dump shows:

"FelixShutdown" prio=6 tid=0x000000000b2bd800 nid=0x16ec waiting on condition [0x000000001650e000]
   java.lang.Thread.State: WAITING (parking)
	at sun.misc.Unsafe.park(Native Method)
	- parking to wait for  <0x00000000fda0bee0> (a java.util.concurrent.CountDownLatch$Sync)
	at java.util.concurrent.locks.LockSupport.park(LockSupport.java:186)
	at java.util.concurrent.locks.AbstractQueuedSynchronizer.parkAndCheckInterrupt(AbstractQueuedSynchronizer.java:834)
	at java.util.concurrent.locks.AbstractQueuedSynchronizer.doAcquireSharedInterruptibly(AbstractQueuedSynchronizer.java:994)
	at java.util.concurrent.locks.AbstractQueuedSynchronizer.acquireSharedInterruptibly(AbstractQueuedSynchronizer.java:1303)
	at java.util.concurrent.CountDownLatch.await(CountDownLatch.java:236)
	at org.apache.sshd.SshServer.stop(SshServer.java:383)
	at org.apache.sshd.SshServer.stop(SshServer.java:363)
	at org.apache.karaf.shell.ssh.SshServerFactory.stop(SshServerFactory.java:68)
	at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
	at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)
	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
	at java.lang.reflect.Method.invoke(Method.java:606)
	at org.apache.aries.blueprint.utils.ReflectionUtils.invoke(ReflectionUtils.java:297)
	at org.apache.aries.blueprint.container.BeanRecipe.invoke(BeanRecipe.java:958)
	at org.apache.aries.blueprint.container.BeanRecipe.destroy(BeanRecipe.java:863)
	at org.apache.aries.blueprint.container.BlueprintRepository.destroy(BlueprintRepository.java:320)
	at org.apache.aries.blueprint.container.BlueprintContainerImpl.destroyComponents(BlueprintContainerImpl.java:722)
	at org.apache.aries.blueprint.container.BlueprintContainerImpl.tidyupComponents(BlueprintContainerImpl.java:916)
	at org.apache.aries.blueprint.container.BlueprintContainerImpl.destroy(BlueprintContainerImpl.java:866)
	at org.apache.aries.blueprint.container.BlueprintExtender$3.run(BlueprintExtender.java:301)
	at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:471)
	at java.util.concurrent.FutureTask.run(FutureTask.java:262)
	at org.apache.aries.blueprint.container.BlueprintExtender.destroyContainer(BlueprintExtender.java:322)
	at org.apache.aries.blueprint.container.BlueprintExtender.stop(BlueprintExtender.java:164)
	at org.apache.aries.blueprint.container.BlueprintExtender.modifiedBundle(BlueprintExtender.java:209)
	at org.apache.aries.util.tracker.hook.BundleHookBundleTracker$Tracked.customizerModified(BundleHookBundleTracker.java:500)
	at org.apache.aries.util.tracker.hook.BundleHookBundleTracker$Tracked.customizerModified(BundleHookBundleTracker.java:433)
	at org.apache.aries.util.tracker.hook.BundleHookBundleTracker$AbstractTracked.track(BundleHookBundleTracker.java:725)
	at org.apache.aries.util.tracker.hook.BundleHookBundleTracker$Tracked.bundleChanged(BundleHookBundleTracker.java:463)
	at org.apache.aries.util.tracker.hook.BundleHookBundleTracker$BundleEventHook.event(BundleHookBundleTracker.java:422)
	at org.apache.felix.framework.util.SecureAction.invokeBundleEventHook(SecureAction.java:1103)
	at org.apache.felix.framework.util.EventDispatcher.createWhitelistFromHooks(EventDispatcher.java:695)
	at org.apache.felix.framework.util.EventDispatcher.fireBundleEvent(EventDispatcher.java:483)
	at org.apache.felix.framework.Felix.fireBundleEvent(Felix.java:4244)
	at org.apache.felix.framework.Felix.stopBundle(Felix.java:2351)
	at org.apache.felix.framework.Felix$2.run(Felix.java:882)
	at java.lang.Thread.run(Thread.java:745)