[
https://issues.apache.org/jira/browse/FELIX-3174?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13131520#comment-13131520
]
Rob Walker commented on FELIX-3174:
-----------------------------------
Does being to clearly look like a servicebinder issue.
The only thing I'm unclear on here is whether the chain of service listeners
should be firing before the registerService call completes. That's what seems
to cause the deadlock.
The start level thread and servicebinder thread seem to collide in a way that
prevents the HTTP service registration from completing.
Probably correct and just either the servicebinder handling, or our
dependencies need to be changed to get around the deadlock.
> 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)
> ====
--
This message is automatically generated by JIRA.
If you think it was sent incorrectly, please contact your JIRA administrators:
https://issues.apache.org/jira/secure/ContactAdministrators!default.jspa
For more information on JIRA, see: http://www.atlassian.com/software/jira
