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From "Carsten Ziegeler (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (FELIX-4670) Deadlock in Felix HTTP service
Date Wed, 15 Oct 2014 12:41:33 GMT

    [ https://issues.apache.org/jira/browse/FELIX-4670?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14172318#comment-14172318
] 

Carsten Ziegeler commented on FELIX-4670:
-----------------------------------------

I like this more, to more asynchronous stuff kills you eventually :)

What about doing a get() call on the concurrent map before doing handler.init() ? If get returns
something, you can skip the rest. Otherwise you do the optimistic init(), putIfAbsent() stuff

> Deadlock in Felix HTTP service
> ------------------------------
>
>                 Key: FELIX-4670
>                 URL: https://issues.apache.org/jira/browse/FELIX-4670
>             Project: Felix
>          Issue Type: Bug
>          Components: HTTP Service
>    Affects Versions: http-2.2.0
>         Environment: Websphere 7.0, IBM Java 6.0
>            Reporter: Jörg Hoh
>            Assignee: David Bosschaert
>         Attachments: felix-4670.diff, felix_4670_alt.diff
>
>
> When we startup our webapplication, we sometimes run into a deadlock:
> {code}
> 1LKDEADLOCK    Deadlock detected !!!
> NULL           ---------------------
> NULL           
> 2LKDEADLOCKTHR  Thread "server.startup : 1" (0x0000000001DDC800)
> 3LKDEADLOCKWTR    is waiting for:
> 4LKDEADLOCKMON      sys_mon_t:0x00007FFFBBB61F20 infl_mon_t: 0x00007FFFBBB61F90:
> 4LKDEADLOCKOBJ      org/apache/felix/http/whiteboard/internal/manager/ExtenderManager@0x00000001014B3650/0x00000001014B365C:

> 3LKDEADLOCKOWN    which is owned by:
> 2LKDEADLOCKTHR  Thread "FelixStartLevel" (0x0000000002156100)
> 3LKDEADLOCKWTR    which is waiting for:
> 4LKDEADLOCKMON      sys_mon_t:0x00007FFFBBBBA340 infl_mon_t: 0x00007FFFBBBBA3B0:
> 4LKDEADLOCKOBJ      org/apache/felix/http/base/internal/handler/HandlerRegistry@0x00000001070D6EA0/0x00000001070D6EAC:

> 3LKDEADLOCKOWN    which is owned by:
> 2LKDEADLOCKTHR  Thread "server.startup : 1" (0x0000000001DDC800)
> NULL         
> {code}
> The stacktrace of these 2 threads as indicated by the javacore file:
> {code}
> 3XMTHREADINFO      "FelixStartLevel" J9VMThread:0x0000000002156100, j9thread_t:0x00007FFFC938B4B0,
java/lang/Thread:0x0000000101580260, state:B, prio=5
> 3XMJAVALTHREAD            (java/lang/Thread getId:0x70, isDaemon:true)
> 3XMTHREADINFO1            (native thread ID:0x5D3A, native priority:0x5, native policy:UNKNOWN)
> 3XMTHREADINFO2            (native stack address range from:0x00007FFFC530A000, to:0x00007FFFC534B000,
size:0x41000)
> 3XMTHREADINFO3           Java callstack:
> 4XESTACKTRACE                at org/apache/felix/http/base/internal/service/HttpServiceImpl.unregisterFilter(HttpServiceImpl.java:140)
   
> 4XESTACKTRACE                at org/apache/felix/http/base/internal/service/HttpServiceImpl.unregisterFilter(HttpServiceImpl.java:76)
> 4XESTACKTRACE                at org/apache/felix/http/whiteboard/internal/manager/FilterMapping.unregister(FilterMapping.java:90)
> 4XESTACKTRACE                at org/apache/felix/http/whiteboard/internal/manager/FilterMapping.unregister(FilterMapping.java:83)
> 4XESTACKTRACE                at org/apache/felix/http/whiteboard/internal/manager/ExtenderManager.unregisterMapping(ExtenderManager.java:270)
> 4XESTACKTRACE                at org/apache/felix/http/whiteboard/internal/manager/ExtenderManager.removeMapping(ExtenderManager.java:252)
     
> 4XESTACKTRACE                at org/apache/felix/http/whiteboard/internal/manager/ExtenderManager.remove(ExtenderManager.java:183)
> 4XESTACKTRACE                at org/apache/felix/http/whiteboard/internal/tracker/FilterTracker.removed(FilterTracker.java:48)
> 4XESTACKTRACE                at org/apache/felix/http/whiteboard/internal/tracker/FilterTracker.removed(FilterTracker.java:24)
> 4XESTACKTRACE                at org/apache/felix/http/whiteboard/internal/tracker/AbstractTracker.removedService(AbstractTracker.java:52)
> 4XESTACKTRACE                at org/osgi/util/tracker/ServiceTracker$Tracked.customizerRemoved(ServiceTracker.java:956)
> 4XESTACKTRACE                at org/osgi/util/tracker/ServiceTracker$Tracked.customizerRemoved(ServiceTracker.java:864)
> 4XESTACKTRACE                at org/osgi/util/tracker/AbstractTracked.untrack(AbstractTracked.java:341(Compiled
Code))
> 4XESTACKTRACE                at org/osgi/util/tracker/ServiceTracker$Tracked.serviceChanged(ServiceTracker.java:902(Compiled
Code))
> 4XESTACKTRACE                at org/apache/felix/framework/util/EventDispatcher.invokeServiceListenerCallback(EventDispatcher.java:932(Compiled
Code))
> 4XESTACKTRACE                at org/apache/felix/framework/util/EventDispatcher.fireEventImmediately(EventDispatcher.java:793(Compiled
Code))
> 4XESTACKTRACE                at org/apache/felix/framework/util/EventDispatcher.fireServiceEvent(EventDispatcher.java:543(Compiled
Code))
> 4XESTACKTRACE                at org/apache/felix/framework/Felix.fireServiceEvent(Felix.java:4401(Compiled
Code))
> 4XESTACKTRACE                at org/apache/felix/framework/Felix.access$000(Felix.java:74(Compiled
Code))
> 4XESTACKTRACE                at org/apache/felix/framework/Felix$1.serviceChanged(Felix.java:390(Compiled
Code))
> 4XESTACKTRACE                at org/apache/felix/framework/ServiceRegistry.unregisterService(ServiceRegistry.java:151(Compiled
Code))
> 4XESTACKTRACE                at org/apache/felix/framework/ServiceRegistrationImpl.unregister(ServiceRegistrationImpl.java:127(Compiled
Code))
> 4XESTACKTRACE                at org/apache/felix/scr/impl/manager/AbstractComponentManager.unregisterComponentService(AbstractComponentManager.java:702(Compiled
Code))
> 4XESTACKTRACE                at org/apache/felix/scr/impl/manager/AbstractComponentManager$State.doDeactivate(AbstractComponentManager.java:1301(Compiled
Code))
> 4XESTACKTRACE                at org/apache/felix/scr/impl/manager/AbstractComponentManager$Satisfied.dispose(AbstractComponentManager.java:1617)
> 4XESTACKTRACE                at org/apache/felix/scr/impl/manager/AbstractComponentManager.disposeInternal(AbstractComponentManager.java:574(Compiled
Code))
> 4XESTACKTRACE                at org/apache/felix/scr/impl/manager/AbstractComponentManager.dispose(AbstractComponentManager.java:404(Compiled
Code))
> 4XESTACKTRACE                at org/apache/felix/scr/impl/config/ImmediateComponentHolder.disposeComponents(ImmediateComponentHolder.java:371(Compiled
Code))
> 4XESTACKTRACE                at org/apache/felix/scr/impl/BundleComponentActivator.dispose(BundleComponentActivator.java:320(Compiled
Code))
> 4XESTACKTRACE                at org/apache/felix/scr/impl/Activator.disposeComponents(Activator.java:316)
> 4XESTACKTRACE                at org/apache/felix/scr/impl/Activator.bundleChanged(Activator.java:183(Compiled
Code))
> 4XESTACKTRACE                at org/apache/felix/framework/util/EventDispatcher.invokeBundleListenerCallback(EventDispatcher.java:868(Compiled
Code))
> 4XESTACKTRACE                at org/apache/felix/framework/util/EventDispatcher.fireEventImmediately(EventDispatcher.java:789(Compiled
Code))
> 4XESTACKTRACE                at org/apache/felix/framework/util/EventDispatcher.fireBundleEvent(EventDispatcher.java:514(Compiled
Code))
> 4XESTACKTRACE                at org/apache/felix/framework/Felix.fireBundleEvent(Felix.java:4385(Compiled
Code))
> 4XESTACKTRACE                at org/apache/felix/framework/Felix.stopBundle(Felix.java:2508)
> 4XESTACKTRACE                at org/apache/felix/framework/Felix.setActiveStartLevel(Felix.java:1297(Compiled
Code))
> 4XESTACKTRACE                at org/apache/felix/framework/FrameworkStartLevelImpl.run(FrameworkStartLevelImpl.java:304)
> 4XESTACKTRACE                at java/lang/Thread.run(Thread.java:761)
> {code}
> {code}
> 3XMTHREADINFO      "server.startup : 1" J9VMThread:0x0000000001DDC800, j9thread_t:0x00007FFFC8C61340,
java/lang/Thread:0x00000001014B35A8, state:B, prio=5
> 3XMJAVALTHREAD            (java/lang/Thread getId:0x68, isDaemon:true)
> 3XMTHREADINFO1            (native thread ID:0x5A08, native priority:0x5, native policy:UNKNOWN)
> 3XMTHREADINFO2            (native stack address range from:0x00007FFFC64D4000, to:0x00007FFFC6515000,
size:0x41000)
> 3XMTHREADINFO3           Java callstack:
> 4XESTACKTRACE                at org/apache/felix/http/whiteboard/internal/manager/ExtenderManager.remove(ExtenderManager.java:183)
> 4XESTACKTRACE                at org/apache/felix/http/whiteboard/internal/tracker/ServletTracker.removed(ServletTracker.java:48)
> 4XESTACKTRACE                at org/apache/felix/http/whiteboard/internal/tracker/ServletTracker.removed(ServletTracker.java:24)
> 4XESTACKTRACE                at org/apache/felix/http/whiteboard/internal/tracker/AbstractTracker.removedService(AbstractTracker.java:52)
> 4XESTACKTRACE                at org/osgi/util/tracker/ServiceTracker$Tracked.customizerRemoved(ServiceTracker.java:956)
> 4XESTACKTRACE                at org/osgi/util/tracker/ServiceTracker$Tracked.customizerRemoved(ServiceTracker.java:864)
> 4XESTACKTRACE                at org/osgi/util/tracker/AbstractTracked.untrack(AbstractTracked.java:341(Compiled
Code))
> 4XESTACKTRACE                at org/osgi/util/tracker/ServiceTracker$Tracked.serviceChanged(ServiceTracker.java:902(Compiled
Code))
> 4XESTACKTRACE                at org/apache/felix/framework/util/EventDispatcher.invokeServiceLi
stenerCallback(EventDispatcher.java:932(Compiled Code))
> 4XESTACKTRACE                at org/apache/felix/framework/util/EventDispatcher.fireEventImmediately(EventDispatcher.java:793(Compiled
Code))
> 4XESTACKTRACE                at org/apache/felix/framework/util/EventDispatcher.fireServiceEvent(EventDispatcher.java:543(Compiled
Code))
> 4XESTACKTRACE                at org/apache/felix/framework/Felix.fireServiceEvent(Felix.java:4401(Compiled
Code))
> 4XESTACKTRACE                at org/apache/felix/framework/Felix.access$000(Felix.java:74(Compiled
Code))
> 4XESTACKTRACE                at org/apache/felix/framework/Felix$1.serviceChanged(Felix.java:390(Compiled
Code))
> 4XESTACKTRACE                at org/apache/felix/framework/ServiceRegistry.unregisterService(ServiceRegistry.java:151(Compiled
Code))
> 4XESTACKTRACE                at org/apache/felix/framework/ServiceRegistrationImpl.unregister(ServiceRegistrationImpl.java:127(Compiled
Code))
> 4XESTACKTRACE                at org/apache/felix/inventory/impl/InventoryPrinterAdapter.unregisterConsole(InventoryPrinterAdapter.java:84)
> 4XESTACKTRACE                at org/apache/felix/inventory/impl/InventoryPrinterManagerImpl.addService(InventoryPrinterManagerImpl.java:196)
> 4XESTACKTRACE                at org/apache/felix/inventory/impl/InventoryPrinterManagerImpl.addingService(InventoryPrinterManagerImpl.java:128)
> 4XESTACKTRACE                at org/osgi/util/tracker/ServiceTracker$Tracked.customizerAdding(ServiceTracker.java:932(Compiled
Code))
> 4XESTACKTRACE                at org/osgi/util/tracker/ServiceTracker$Tracked.customizerAdding(ServiceTracker.java:864(Compiled
Code))
> 4XESTACKTRACE                at org/osgi/util/tracker/AbstractTracked.trackAdding(AbstractTracked.java:256(Compiled
Code))
> 4XESTACKTRACE                at org/osgi/util/tracker/AbstractTracked.track(AbstractTracked.java:229(Compiled
Code))
> 4XESTACKTRACE                at org/osgi/util/tracker/ServiceTracker$Tracked.serviceChanged(ServiceTracker.java:894(Compiled
Code))
> 4XESTACKTRACE                at org/apache/felix/framework/util/EventDispatcher.invokeServiceListenerCallback(EventDispatcher.java:932(Compiled
Code))
> 4XESTACKTRACE                at org/apache/felix/framework/util/EventDispatcher.fireEventImmediately(EventDispatcher.java:793(Compiled
Code))
> 4XESTACKTRACE                at org/apache/felix/framework/util/EventDispatcher.fireServiceEvent(EventDispatcher.java:543(Compiled
Code))
> 4XESTACKTRACE                at org/apache/felix/framework/Felix.fireServiceEvent(Felix.java:4401(Compiled
Code))
> 4XESTACKTRACE                at org/apache/felix/framework/Felix.registerService(Felix.java:3411(Compiled
Code))
> 4XESTACKTRACE                at org/apache/felix/framework/BundleContextImpl.registerService(BundleContextImpl.java:346(Compiled
Code))
> 4XESTACKTRACE                at org/apache/felix/framework/BundleContextImpl.registerService(BundleContextImpl.java:320)
> 4XESTACKTRACE                at org/apache/felix/inventory/impl/webconsole/WebConsoleAdapter.add(WebConsoleAdapter.java:125)
> 4XESTACKTRACE                at org/apache/felix/inventory/impl/webconsole/WebConsoleAdapter.addingService(WebConsoleAdapter.java:155)
> 4XESTACKTRACE                at org/osgi/util/tracker/ServiceTracker$Tracked.customizerAdding(ServiceTracker.java:932(Compiled
Code))
> 4XESTACKTRACE                at org/osgi/util/tracker/ServiceTracker$Tracked.customizerAdding(ServiceTracker.java:864(Compiled
Code))
> 4XESTACKTRACE                at org/osgi/util/tracker/AbstractTracked.trackAdding(AbstractTracked.java:256(Compiled
Code))
> 4XESTACKTRACE                at org/osgi/util/tracker/AbstractTracked.track(AbstractTracked.java:229(Compiled
Code))
> 4XESTACKTRACE                at org/osgi/util/tracker/ServiceTracker$Tracked.serviceChanged(ServiceTracker.java:894(Compiled
Code))
> 4XESTACKTRACE                at org/apache/felix/framework/util/EventDispatcher.invokeServiceListenerCallback(EventDispatcher.java:932(Compiled
Code))
> 4XESTACKTRACE                at org/apache/felix/framework/util/EventDispatcher.fireEventImmediately(EventDispatcher.java:793(Compiled
Code))
> 4XESTACKTRACE                at org/apache/felix/framework/util/EventDispatcher.fireServiceEvent(EventDispatcher.java:543(Compiled
Code))
> 4XESTACKTRACE                at org/apache/felix/framework/Felix.fireServiceEvent(Felix.java:4401(Compiled
Code))
> 4XESTACKTRACE                at org/apache/felix/framework/Felix.registerService(Felix.java:3411(Compiled
Code))
> 4XESTACKTRACE                at org/apache/felix/framework/BundleContextImpl.registerService(BundleContextImpl.java:346(Compiled
Code))
> 4XESTACKTRACE                at org/apache/felix/framework/BundleContextImpl.registerService(BundleContextImpl.java:320)
> 4XESTACKTRACE                at de/xxx/yyy/modules/common/servlet/dispatcher/jsp/JspTldLocationsCache.<init>(JspTldLocationsCache.java:81)
> 4XESTACKTRACE                at de/xxx/yyy/modules/common/servlet/dispatcher/jsp/engine/JspScriptEngineFactory.activate(JspScriptEngineFactory.java:235)
> 4XESTACKTRACE                at de/xxx/yyy/modules/common/servlet/ContainerServlet.init(ContainerServlet.java:96)
> 4XESTACKTRACE                at org/apache/felix/http/base/internal/handler/ServletHandler.init(ServletHandler.java:55)
> 4XESTACKTRACE                at org/apache/felix/http/base/internal/handler/HandlerRegistry.addServlet(HandlerRegistry.java:65)
                    
> 4XESTACKTRACE                at org/apache/felix/http/base/internal/service/HttpServiceImpl.registerServlet(HttpServiceImpl.java:95)
> 4XESTACKTRACE                at de/xxx/yyy/modules/common/osgi/webapp/WebappModuleServiceTracker.addingService(WebappModuleServiceTracker.java:82)
> 4XESTACKTRACE                at org/osgi/util/tracker/ServiceTracker$Tracked.customizerAdding(ServiceTracker.java:932(Compiled
Code))
> 4XESTACKTRACE                at org/osgi/util/tracker/ServiceTracker$Tracked.customizerAdding(ServiceTracker.java:864(Compiled
Code))
> 4XESTACKTRACE                at org/osgi/util/tracker/AbstractTracked.trackAdding(AbstractTracked.java:256(Compiled
Code))
> 4XESTACKTRACE                at org/osgi/util/tracker/AbstractTracked.track(AbstractTracked.java:229(Compiled
Code))
> 4XESTACKTRACE                at org/osgi/util/tracker/ServiceTracker$Tracked.serviceChanged(ServiceTracker.java:894(Compiled
Code))
> 4XESTACKTRACE                at org/apache/felix/framework/util/EventDispatcher.invokeServiceListenerCallback(EventDispatcher.java:932(Compiled
Code))
> 4XESTACKTRACE                at org/apache/felix/framework/util/EventDispatcher.fireEventImmediately(EventDispatcher.java:793(Compiled
Code))
> 4XESTACKTRACE                at org/apache/felix/framework/util/EventDispatcher.fireServiceEvent(EventDispatcher.java:543(Compiled
Code))
> 4XESTACKTRACE                at org/apache/felix/framework/Felix.fireServiceEvent(Felix.java:4401(Compiled
Code))
> 4XESTACKTRACE                at org/apache/felix/framework/Felix.registerService(Felix.java:3411(Compiled
Code))
> 4XESTACKTRACE                at org/apache/felix/framework/BundleContextImpl.registerService(BundleContextImpl.java:346(Compiled
Code))
> 4XESTACKTRACE                at org/apache/felix/http/base/internal/HttpServiceController.register(HttpServiceController.java:135)
> 4XESTACKTRACE                at org/apache/felix/http/base/internal/DispatcherServlet.init(DispatcherServlet.java:48)
> 4XESTACKTRACE                at org/apache/felix/http/proxy/DispatcherTracker.initDispatcher(DispatcherTracker.java:97)
> 4XESTACKTRACE                at org/apache/felix/http/proxy/DispatcherTracker.setDispatcher(DispatcherTracker.java:77)
> 4XESTACKTRACE                at org/apache/felix/http/proxy/DispatcherTracker.addingService(DispatcherTracker.java:52)
> 4XESTACKTRACE                at org/osgi/util/tracker/ServiceTracker$Tracked.customizerAdding(ServiceTracker.java:932)
> 4XESTACKTRACE                at org/osgi/util/tracker/ServiceTracker$Tracked.customizerAdding(ServiceTracker.java:864)
> 4XESTACKTRACE                at org/osgi/util/tracker/AbstractTracked.trackAdding(AbstractTracked.java:256(Compiled
Code))
> 4XESTACKTRACE                at org/osgi/util/tracker/AbstractTracked.trackInitial(AbstractTracked.java:183(Compiled
Code))
> 4XESTACKTRACE                at org/osgi/util/tracker/ServiceTracker.open(ServiceTracker.java:317)
> 4XESTACKTRACE                at org/osgi/util/tracker/ServiceTracker.open(ServiceTracker.java:261)
> 4XESTACKTRACE                at org/apache/felix/http/proxy/ProxyServlet.doInit(ProxyServlet.java:51)
> 4XESTACKTRACE                at org/apache/felix/http/proxy/ProxyServlet.init(ProxyServlet.java:39)
> 4XESTACKTRACE                at org/apache/sling/launchpad/base/webapp/SlingServletDelegate.init(SlingServletDelegate.java:208)
> 4XESTACKTRACE                at javax/servlet/GenericServlet.init(GenericServlet.java:241)
> 4XESTACKTRACE                at org/apache/sling/launchpad/webapp/SlingServlet.startSling(SlingServlet.java:384)
> 4XESTACKTRACE                at org/apache/sling/launchpad/webapp/SlingServlet.startSling(SlingServlet.java:325)
> 4XESTACKTRACE                at org/apache/sling/launchpad/webapp/SlingServlet.init(SlingServlet.java:118)
> 4XESTACKTRACE                at javax/servlet/GenericServlet.init(GenericServlet.java:241)
> 4XESTACKTRACE                at com/ibm/ws/webcontainer/servlet/ServletWrapper.init(ServletWrapper.java:363)
> 4XESTACKTRACE                at com/ibm/ws/webcontainer/servlet/ServletWrapperImpl.init(ServletWrapperImpl.java:171)
> 4XESTACKTRACE                at com/ibm/ws/webcontainer/servlet/ServletWrapper.initialize(ServletWrapper.java:1844)
> 4XESTACKTRACE                at com/ibm/wsspi/webcontainer/extension/WebExtensionProcessor.createServletWrapper(WebExtensionProcessor.java:98)
> 4XESTACKTRACE                at com/ibm/ws/webcontainer/webapp/WebApp.getServletWrapper(WebApp.java:1048(Compiled
Code))
> 4XESTACKTRACE                at com/ibm/ws/webcontainer/webapp/WebApp.getServletWrapper(WebApp.java:969)
> 4XESTACKTRACE                at com/ibm/ws/webcontainer/webapp/WebApp.initializeTargetMappings(WebApp.java:648(Compiled
Code))
> 4XESTACKTRACE                at com/ibm/ws/webcontainer/webapp/WebApp.commonInitializationFinally(WebApp.java:450)
> 4XESTACKTRACE                at com/ibm/ws/webcontainer/webapp/WebAppImpl.initialize(WebAppImpl.java:304(Compiled
Code))
> 4XESTACKTRACE                at com/ibm/ws/webcontainer/webapp/WebGroupImpl.addWebApplication(WebGroupImpl.java:100)
> 4XESTACKTRACE                at com/ibm/ws/webcontainer/VirtualHostImpl.addWebApplication(VirtualHostImpl.java:166)
> 4XESTACKTRACE                at com/ibm/ws/webcontainer/WSWebContainer.addWebApp(WSWebContainer.java:732)
> 4XESTACKTRACE                at com/ibm/ws/webcontainer/WSWebContainer.addWebApplication(WSWebContainer.java:617)
> 4XESTACKTRACE                at com/ibm/ws/webcontainer/component/WebContainerImpl.install(WebContainerImpl.java:376)
> 4XESTACKTRACE                at com/ibm/ws/webcontainer/component/WebContainerImpl.start(WebContainerImpl.java:668)
> 4XESTACKTRACE                at com/ibm/ws/runtime/component/ApplicationMgrImpl.start(ApplicationMgrImpl.java:1128(Compiled
Code))
> 4XESTACKTRACE                at com/ibm/ws/runtime/component/DeployedApplicationImpl.fireDeployedObjectStart(DeployedApplicationImpl.java:1319)
> 4XESTACKTRACE                at com/ibm/ws/runtime/component/DeployedModuleImpl.start(DeployedModuleImpl.java:611(Compiled
Code))
> 4XESTACKTRACE                at com/ibm/ws/runtime/component/DeployedApplicationImpl.start(DeployedApplicationImpl.java:944(Compiled
Code))
> 4XESTACKTRACE                at com/ibm/ws/runtime/component/ApplicationMgrImpl.startApplication(ApplicationMgrImpl.java:741(Compiled
Code))
> 4XESTACKTRACE                at com/ibm/ws/runtime/component/ApplicationMgrImpl$3.run(ApplicationMgrImpl.java:2056)
> 4XESTACKTRACE                at com/ibm/ws/security/auth/ContextManagerImpl.runAs(ContextManagerImpl.java:5395)
> 4XESTACKTRACE                at com/ibm/ws/security/auth/ContextManagerImpl.runAsSystem(ContextManagerImpl.java:5483)
> 4XESTACKTRACE                at com/ibm/ws/security/core/SecurityContext.runAsSystem(SecurityContext.java:255)
> 4XESTACKTRACE                at com/ibm/ws/runtime/component/ApplicationMgrImpl.start(ApplicationMgrImpl.java:2061)
> 4XESTACKTRACE                at com/ibm/ws/runtime/component/CompositionUnitMgrImpl.start(CompositionUnitMgrImpl.java:389(Compiled
Code))
> 4XESTACKTRACE                at com/ibm/ws/runtime/component/CompositionUnitImpl.start(CompositionUnitImpl.java:123)
> 4XESTACKTRACE                at com/ibm/ws/runtime/component/CompositionUnitMgrImpl.start(CompositionUnitMgrImpl.java:332)
> 4XESTACKTRACE                at com/ibm/ws/runtime/component/CompositionUnitMgrImpl.access$300(CompositionUnitMgrImpl.java:117)
> 4XESTACKTRACE                at com/ibm/ws/runtime/component/CompositionUnitMgrImpl$CUInitializer.run(CompositionUnitMgrImpl.java:899)
> 4XESTACKTRACE                at com/ibm/wsspi/runtime/component/WsComponentImpl$_AsynchInitializer.run(WsComponentImpl.java:496)
> 4XESTACKTRACE                at com/ibm/ws/util/ThreadPool$Worker.run(ThreadPool.java:1656(Compiled
Code))
> {code}
> We run into this quite often, so it's kind of reproducible. We have the same behaviour
as well with other thread combinations (e.g. Sling Notifier and FelixFrameworkWiring) hitting
the same locks.



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