Details
-
Bug
-
Status: Resolved
-
Major
-
Resolution: Cannot Reproduce
-
2.3.0
-
None
-
None
Description
There is a dead/live lock problem when the 2.3.0 karaf console bundle is refreshed. This can be reproduced by refreshing the console bundle:
__ __ ____ / //_/____ __________ _/ __/ / ,< / __ `/ ___/ __ `/ /_ / /| |/ /_/ / / / /_/ / __/ /_/ |_|\__,_/_/ \__,_/_/ Apache Karaf (2.3.0) Hit '<tab>' for a list of available commands and '[cmd] --help' for help on a specific command. Hit '<ctrl-d>' or 'osgi:shutdown' to shutdown Karaf. karaf@root> list -t 0 | grep -i console [ 14] [Active ] [Created ] [ 25] Apache Karaf :: Shell :: Console (2. 3.0) karaf@root> refresh 14 You are about to access system bundle 14. Do you wish to continue (yes/no): kar af@root>
Do not press any other key and take a thread dump. There will be a FelixFrameworkWiring thread waiting to acquire the NonBlockingInputStream lock and a Karaf Shell Console Thread holding that lock and waiting for input:
"FelixFrameworkWiring" daemon prio=6 tid=0x000000000a582800 nid=0x1cb4 waiting for monitor entry [0x000000000f26d000] java.lang.Thread.State: BLOCKED (on object monitor) at jline.internal.NonBlockingInputStream.shutdown(NonBlockingInputStream.java:75) - waiting to lock <0x00000000e0096d48> (a jline.internal.NonBlockingInputStream) at jline.console.ConsoleReader.shutdown(ConsoleReader.java:281) at org.apache.karaf.shell.console.jline.Console.close(Console.java:149) at org.apache.karaf.shell.console.jline.ConsoleFactory.stop(ConsoleFactory.java:196) at org.apache.karaf.shell.console.jline.ConsoleFactory.unregisterCommandProcessor(ConsoleFactory.java:70) - locked <0x00000000e0d2e758> (a org.apache.karaf.shell.console.jline.ConsoleFactory) 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:601) at org.apache.aries.blueprint.utils.ReflectionUtils.invoke(ReflectionUtils.java:297) at org.apache.aries.blueprint.container.AbstractServiceReferenceRecipe$Listener.invokeMethods(AbstractServiceReferenceRecipe.java:526) at org.apache.aries.blueprint.container.AbstractServiceReferenceRecipe$Listener.unbind(AbstractServiceReferenceRecipe.java:512) at org.apache.aries.blueprint.container.AbstractServiceReferenceRecipe.unbind(AbstractServiceReferenceRecipe.java:415) at org.apache.aries.blueprint.container.ReferenceRecipe.unbind(ReferenceRecipe.java:181) - locked <0x00000000e00e7268> (a java.lang.Object) at org.apache.aries.blueprint.container.ReferenceRecipe.doStop(ReferenceRecipe.java:122) - locked <0x00000000e00e7268> (a java.lang.Object) at org.apache.aries.blueprint.container.AbstractServiceReferenceRecipe.stop(AbstractServiceReferenceRecipe.java:153) - locked <0x00000000e00e71f8> (a java.util.ArrayList) at org.apache.aries.blueprint.container.BlueprintContainerImpl.untrackServiceReference(BlueprintContainerImpl.java:594) at org.apache.aries.blueprint.container.BlueprintContainerImpl.untrackServiceReferences(BlueprintContainerImpl.java:574) at org.apache.aries.blueprint.container.BlueprintContainerImpl.destroy(BlueprintContainerImpl.java:842) at org.apache.aries.blueprint.container.BlueprintExtender.destroyContext(BlueprintExtender.java:246) at org.apache.aries.blueprint.container.BlueprintExtender.bundleChanged(BlueprintExtender.java:238) at org.apache.aries.blueprint.container.BlueprintExtender$BlueprintBundleTrackerCustomizer.modifiedBundle(BlueprintExtender.java:434) at org.apache.aries.util.tracker.hook.BundleHookBundleTracker$Tracked.customizerModified(BundleHookBundleTracker.java:198) at org.apache.aries.util.tracker.hook.BundleHookBundleTracker$Tracked.customizerModified(BundleHookBundleTracker.java:128) at org.apache.aries.util.tracker.hook.BundleHookBundleTracker$AbstractTracked.track(BundleHookBundleTracker.java:468) at org.apache.aries.util.tracker.hook.BundleHookBundleTracker$Tracked.bundleChanged(BundleHookBundleTracker.java:161) at org.apache.aries.util.tracker.hook.BundleHookBundleTracker$BundleEventHook.event(BundleHookBundleTracker.java:117) 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$RefreshHelper.stop(Felix.java:4629) at org.apache.felix.framework.Felix.refreshPackages(Felix.java:3951) at org.apache.felix.framework.FrameworkWiringImpl.run(FrameworkWiringImpl.java:172) at java.lang.Thread.run(Thread.java:722) "Karaf Shell Console Thread" daemon prio=6 tid=0x000000000a574800 nid=0x1d08 waiting on condition [0x000000000dcfe000] java.lang.Thread.State: WAITING (parking) at sun.misc.Unsafe.park(Native Method) - parking to wait for <0x00000000e00e6d38> (a java.util.concurrent.locks.AbstractQueuedSynchronizer$ConditionObject) at java.util.concurrent.locks.LockSupport.park(LockSupport.java:186) at java.util.concurrent.locks.AbstractQueuedSynchronizer$ConditionObject.await(AbstractQueuedSynchronizer.java:2043) at java.util.concurrent.ArrayBlockingQueue.take(ArrayBlockingQueue.java:374) at org.apache.karaf.shell.console.jline.Console$ConsoleInputStream.read(Console.java:386) at org.apache.karaf.shell.console.jline.Console$ConsoleInputStream.read(Console.java:403) at jline.internal.NonBlockingInputStream.read(NonBlockingInputStream.java:169) - locked <0x00000000e0096d48> (a jline.internal.NonBlockingInputStream) at jline.internal.NonBlockingInputStream.read(NonBlockingInputStream.java:137) at jline.internal.NonBlockingInputStream.read(NonBlockingInputStream.java:246) at jline.internal.InputStreamReader.read(InputStreamReader.java:259) - locked <0x00000000e0096d48> (a jline.internal.NonBlockingInputStream) at jline.internal.InputStreamReader.read(InputStreamReader.java:196) - locked <0x00000000e0096d48> (a jline.internal.NonBlockingInputStream) at jline.console.ConsoleReader.readCharacter(ConsoleReader.java:1974) at jline.console.ConsoleReader.readLine(ConsoleReader.java:2174) at jline.console.ConsoleReader.readLine(ConsoleReader.java:2098) at org.apache.karaf.shell.console.jline.Console.readAndParseCommand(Console.java:235) at org.apache.karaf.shell.console.jline.Console.run(Console.java:171) at java.lang.Thread.run(Thread.java:722)
No progress will be made until a key is pressed. After pressing a key the error message "Error executing command: read() with timeout cannot be called as non-blocking operation is disabled" will be printed and the Apache Karaf 2.3.0 logo will be printed a second time.
This is particularly problematic from environments such as pax exam where no further console input can be generated. Additionally a refresh on the console bundle seems to be generated sometimes when installing the jpa/jndi features which include org.apache.aries.util as a dependency. See this karaf-user thread for more information:
http://karaf.922171.n3.nabble.com/Problems-with-ipojo-in-Karaf-2-3-0-td4026688.html