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https://issues.apache.org/jira/browse/FELIX-3174?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13131457#comment-13131457
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Karl Pauls commented on FELIX-3174:
-----------------------------------
hm, we do notify in release bundle lock. The state should not change because we
only lock a bundle with the m_bundleLock held. None of the conditions should
change without getting that lock.
Can you please give us the complete thread dump (only looking at one thread in
isolation makes it hard to figure out what is going on).
> Startup freeze caused in acquireBundleLock
> ------------------------------------------
>
> Key: FELIX-3174
> URL: https://issues.apache.org/jira/browse/FELIX-3174
> Project: Felix
> Issue Type: Bug
> Components: Framework
> Affects Versions: framework-4.2.0
> Reporter: Rob Walker
>
> This may be a sub or related case of a few others which I've linked below.
> In the latest trunk we are now seeing a startup scenario where our HTTP
> bundle acquires a lock in the process of registering a service, but the later
> wait for this lock (Felix.java:4862) never seems to get notified.
> It doesn't seem a traditional deadlock per se - no other thread is holding
> this lock. It just seems that the lock never gets notified, hence the HTTP
> bundle never completes it's startup and service registration, causing all our
> other bundles that depend on the HTTP service never to start up.
> Stack trace of locked thread below:
> ====
> "Jetty HTTP Service" daemon prio=6 tid=0x0586ac00 nid=0x19dc in Object.wait()
> [0x05a8f000]
> java.lang.Thread.State: WAITING (on object monitor)
> at java.lang.Object.wait(Native Method)
> - waiting on <0x1f84df50> (a [Ljava.lang.Object;)
> at java.lang.Object.wait(Object.java:485)
> at org.apache.felix.framework.Felix.acquireBundleLock(Felix.java:4862)
> - locked <0x1f84df50> (a [Ljava.lang.Object;)
> at org.apache.felix.framework.Felix.registerService(Felix.java:3205)
> at
> org.apache.felix.framework.BundleContextImpl.registerService(BundleContextImpl.java:346)
> at
> org.apache.felix.servicebinder.InstanceManager.requestRegistration(InstanceManager.java:508)
> at
> org.apache.felix.servicebinder.InstanceManager.validate(InstanceManager.java:294)
> - locked <0x1fa2ef78> (a
> org.apache.felix.servicebinder.InstanceManager)
> at
> org.apache.felix.servicebinder.InstanceManager$DependencyManager.serviceChanged(InstanceManager.java:948)
> - locked <0x1fa2ef78> (a
> org.apache.felix.servicebinder.InstanceManager)
> 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:4252)
> at org.apache.felix.framework.Felix.registerService(Felix.java:3275)
> at
> org.apache.felix.framework.BundleContextImpl.registerService(BundleContextImpl.java:346)
> at
> org.apache.felix.http.base.internal.HttpServiceController.register(HttpServiceController.java:135)
> at
> org.apache.felix.http.base.internal.DispatcherServlet.init(DispatcherServlet.java:48)
> at
> org.mortbay.jetty.servlet.ServletHolder.initServlet(ServletHolder.java:440)
> at
> org.mortbay.jetty.servlet.ServletHolder.doStart(ServletHolder.java:263)
> at
> org.mortbay.component.AbstractLifeCycle.start(AbstractLifeCycle.java:50)
> - locked <0x1fa2f0b0> (a java.lang.Object)
> at
> org.mortbay.jetty.servlet.ServletHandler.initialize(ServletHandler.java:736)
> at org.mortbay.jetty.servlet.Context.startContext(Context.java:140)
> at
> org.mortbay.jetty.handler.ContextHandler.doStart(ContextHandler.java:518)
> at
> org.mortbay.component.AbstractLifeCycle.start(AbstractLifeCycle.java:50)
> - locked <0x1fa2f1c0> (a java.lang.Object)
> at
> org.mortbay.jetty.handler.HandlerWrapper.doStart(HandlerWrapper.java:130)
> at org.mortbay.jetty.Server.doStart(Server.java:224)
> at
> org.mortbay.component.AbstractLifeCycle.start(AbstractLifeCycle.java:50)
> - locked <0x1fa03e50> (a java.lang.Object)
> at
> org.apache.felix.http.jetty.internal.JettyService.initializeJetty(JettyService.java:181)
> at
> org.apache.felix.http.jetty.internal.JettyService.startJetty(JettyService.java:116)
> at
> org.apache.felix.http.jetty.internal.JettyService.run(JettyService.java:307)
> at java.lang.Thread.run(Thread.java:619)
> ====
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