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https://issues.apache.org/jira/browse/FELIX-4670?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14172890#comment-14172890
]
David Bosschaert commented on FELIX-4670:
-----------------------------------------
bq. I'll put some code in that makes sure that init() doesn't get called
multiple times without destroy in between.
Actually, that piece turns out to be quite tricky, as you don't know from a
Servlet itself whether it has been inited, which means you need to add
synchronization again to check this in a separate datastructure, and the
synchronization was what we were trying to remove.
So I think that there is a risk that init() gets called more than once if
someone tries to add the actual same servlet twice, but that is an error
condition anyway and an exception will get thrown, so I think it might be ok to
leave it at that.
> 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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