Bugs item #811269, was opened at 2003-09-23 18:40
Message generated for change (Comment added) made by letiemble
You can respond by visiting:
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Category: JBossWeb
Group: v3.2
Status: Open
Resolution: None
Priority: 5
Submitted By: Jeff Gettle (jgettle)
Assigned to: Nobody/Anonymous (nobody)
Summary: deadlock in JettyMBean and PluginManager
Initial Comment:
We're running jboss-3.2.2RC4_jetty-4.2.11 when we
startup JBoss we are seeing the following deadlock
sometimes.
Found one Java-level deadlock:
=============================
"PoolThread-3":
waiting to lock monitor 0x0010e158 (object
0xd600b9c8, a org.jboss.jetty.JettyMBean),
which is held by "main"
"main":
waiting to lock monitor 0x0010e238 (object
0xd5e93948, a org.jboss.console.manager.PluginManager),
which is held by "PoolThread-3"
Java stack information for the threads listed above:
===================================================
"PoolThread-3":
at
org.mortbay.util.jmx.ModelMBeanImpl.getMBeanInfo(ModelMBeanImpl.java:590)
- waiting to lock <0xd600b9c8> (a
org.jboss.jetty.JettyMBean)
at
org.jboss.mx.server.MBeanServerImpl.getMBeanInfo(MBeanServerImpl.java:568)
at
org.jboss.console.plugins.helpers.jmx.Server.getDomainData(Server.java:53)
at
org.jboss.console.plugins.MBeansLister.createJmxDomainsSubNodes(MBeansLister.java:69)
at
org.jboss.console.plugins.MBeansLister.getTreeForResource(MBeansLister.java:122)
at
org.jboss.console.plugins.helpers.AbstractPluginWrapper.getSubTreeForResource(AbstractPluginWrapper.java:201)
at
org.jboss.console.manager.PluginManager.getTreesForResource(PluginManager.java:392)
at
org.jboss.console.manager.PluginManager.getTreeForProfile(PluginManager.java:192)
- locked <0xd5e93948> (a
org.jboss.console.manager.PluginManager)
at
org.jboss.console.manager.PluginManager.getUpdateTreeForProfile(PluginManager.java:275)
- locked <0xd5e93948> (a
org.jboss.console.manager.PluginManager)
at
sun.reflect.GeneratedMethodAccessor44.invoke(Unknown
Source)
at
sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
at java.lang.reflect.Method.invoke(Method.java:324)
at
org.jboss.mx.capability.ReflectedMBeanDispatcher.invoke(ReflectedMBeanDispatcher.java:284)
at
org.jboss.mx.server.MBeanServerImpl.invoke(MBeanServerImpl.java:546)
at
org.jboss.console.remote.InvokerServlet.processRequest(InvokerServlet.java:86)
at
org.jboss.console.remote.InvokerServlet.doPost(InvokerServlet.java:123)
at
javax.servlet.http.HttpServlet.service(HttpServlet.java:760)
at
javax.servlet.http.HttpServlet.service(HttpServlet.java:853)
at
org.mortbay.jetty.servlet.ServletHolder.handle(ServletHolder.java:356)
at
org.mortbay.jetty.servlet.WebApplicationHandler.dispatch(WebApplicationHandler.java:294)
at
org.mortbay.jetty.servlet.ServletHandler.handle(ServletHandler.java:567)
at
org.mortbay.http.HttpContext.handle(HttpContext.java:1723)
at
org.mortbay.jetty.servlet.WebApplicationContext.handle(WebApplicationContext.java:514)
at
org.mortbay.http.HttpContext.handle(HttpContext.java:1673)
at
org.mortbay.http.HttpServer.service(HttpServer.java:879)
at org.jboss.jetty.Jetty.service(Jetty.java:459)
at
org.mortbay.http.HttpConnection.service(HttpConnection.java:783)
at
org.mortbay.http.HttpConnection.handleNext(HttpConnection.java:945)
at
org.mortbay.http.HttpConnection.handle(HttpConnection.java:800)
at
org.mortbay.http.SocketListener.handleConnection(SocketListener.java:201)
at
org.mortbay.util.ThreadedServer.handle(ThreadedServer.java:289)
at
org.mortbay.util.ThreadPool$PoolThread.run(ThreadPool.java:454)
"main":
at
org.jboss.console.manager.PluginManager.handleNotification(PluginManager.java:372)
- waiting to lock <0xd5e93948> (a
org.jboss.console.manager.PluginManager)
at
org.jboss.mx.server.NotificationListenerProxy.handleNotification(NotificationListenerProxy.java:69)
at
javax.management.NotificationBroadcasterSupport.sendNotification(NotificationBroadcasterSupport.java:95)
at
javax.management.MBeanServerDelegate.sendNotification(MBeanServerDelegate.java:99)
at
org.jboss.mx.server.registry.BasicMBeanRegistry.unregisterMBean(BasicMBeanRegistry.java:323)
at
sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at
sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
at
sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
at java.lang.reflect.Method.invoke(Method.java:324)
at
org.jboss.mx.capability.ReflectedMBeanDispatcher.invoke(ReflectedMBeanDispatcher.java:284)
at
org.jboss.mx.interceptor.ObjectReferenceInterceptor.invoke(ObjectReferenceInterceptor.java:59)
at
org.jboss.mx.interceptor.MBeanAttributeInterceptor.invoke(MBeanAttributeInterceptor.java:43)
at
org.jboss.mx.interceptor.PersistenceInterceptor2.invoke(PersistenceInterceptor2.java:93)
at
org.jboss.mx.server.MBeanInvoker.invoke(MBeanInvoker.java:76)
at
javax.management.modelmbean.RequiredModelMBean.invoke(RequiredModelMBean.java:144)
at
org.jboss.mx.server.MBeanServerImpl.invoke(MBeanServerImpl.java:546)
at
org.jboss.mx.server.MBeanServerImpl.unregisterMBean(MBeanServerImpl.java:343)
at
org.mortbay.http.jmx.HttpServerMBean.removeComponent(HttpServerMBean.java:184)
- locked <0xd600b9c8> (a
org.jboss.jetty.JettyMBean)
at
org.mortbay.http.HttpServer.removeComponent(HttpServer.java:1273)
at
org.mortbay.http.HttpServer.removeContext(HttpServer.java:349)
at org.jboss.jetty.Jetty.undeploy(Jetty.java:374)
at org.jboss.jetty.Jetty.deploy(Jetty.java:351)
at
org.jboss.jetty.JettyService.performDeploy(JettyService.java:242)
at
org.jboss.web.AbstractWebContainer.start(AbstractWebContainer.java:428)
- locked <0xd600ba18> (a
org.jboss.jetty.JettyService)
at
org.jboss.deployment.MainDeployer.start(MainDeployer.java:824)
at
org.jboss.deployment.MainDeployer.start(MainDeployer.java:816)
at
org.jboss.deployment.MainDeployer.deploy(MainDeployer.java:632)
at
org.jboss.deployment.MainDeployer.deploy(MainDeployer.java:605)
at
sun.reflect.GeneratedMethodAccessor20.invoke(Unknown
Source)
at
sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
at java.lang.reflect.Method.invoke(Method.java:324)
at
org.jboss.mx.capability.ReflectedMBeanDispatcher.invoke(ReflectedMBeanDispatcher.java:284)
at
org.jboss.mx.server.MBeanServerImpl.invoke(MBeanServerImpl.java:546)
at
org.jboss.mx.util.MBeanProxyExt.invoke(MBeanProxyExt.java:177)
at $Proxy6.deploy(Unknown Source)
at
org.jboss.deployment.scanner.URLDeploymentScanner.deploy(URLDeploymentScanner.java:302)
at
org.jboss.deployment.scanner.URLDeploymentScanner.scan(URLDeploymentScanner.java:476)
- locked <0xd5d68698> (a
org.jboss.deployment.scanner.URLDeploymentScanner)
at
org.jboss.deployment.scanner.AbstractDeploymentScanner$ScannerThread.doScan(AbstractDeploymentScanner.java:201)
at
org.jboss.deployment.scanner.AbstractDeploymentScanner.startService(AbstractDeploymentScanner.java:274)
- locked <0xd5d67e58> (a
org.jboss.deployment.scanner.AbstractDeploymentScanner$ScannerThread)
at
org.jboss.system.ServiceMBeanSupport.start(ServiceMBeanSupport.java:192)
at
sun.reflect.GeneratedMethodAccessor5.invoke(Unknown Source)
at
sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
at java.lang.reflect.Method.invoke(Method.java:324)
at
org.jboss.mx.capability.ReflectedMBeanDispatcher.invoke(ReflectedMBeanDispatcher.java:284)
at
org.jboss.mx.server.MBeanServerImpl.invoke(MBeanServerImpl.java:546)
at
org.jboss.system.ServiceController$ServiceProxy.invoke(ServiceController.java:976)
at $Proxy0.start(Unknown Source)
at
org.jboss.system.ServiceController.start(ServiceController.java:394)
- locked <0xd5c199e8> (a
org.jboss.system.ServiceController)
at
sun.reflect.GeneratedMethodAccessor6.invoke(Unknown Source)
at
sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
at java.lang.reflect.Method.invoke(Method.java:324)
at
org.jboss.mx.capability.ReflectedMBeanDispatcher.invoke(ReflectedMBeanDispatcher.java:284)
at
org.jboss.mx.server.MBeanServerImpl.invoke(MBeanServerImpl.java:546)
at
org.jboss.mx.util.MBeanProxyExt.invoke(MBeanProxyExt.java:177)
at $Proxy4.start(Unknown Source)
at
org.jboss.deployment.SARDeployer.start(SARDeployer.java:226)
at
org.jboss.deployment.MainDeployer.start(MainDeployer.java:824)
at
org.jboss.deployment.MainDeployer.deploy(MainDeployer.java:632)
at
org.jboss.deployment.MainDeployer.deploy(MainDeployer.java:605)
at
org.jboss.deployment.MainDeployer.deploy(MainDeployer.java:589)
at
sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at
sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
at
sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
at java.lang.reflect.Method.invoke(Method.java:324)
at
org.jboss.mx.capability.ReflectedMBeanDispatcher.invoke(ReflectedMBeanDispatcher.java:284)
at
org.jboss.mx.server.MBeanServerImpl.invoke(MBeanServerImpl.java:546)
at
org.jboss.mx.util.MBeanProxyExt.invoke(MBeanProxyExt.java:177)
at $Proxy5.deploy(Unknown Source)
at
org.jboss.system.server.ServerImpl.doStart(ServerImpl.java:384)
at
org.jboss.system.server.ServerImpl.start(ServerImpl.java:291)
at org.jboss.Main.boot(Main.java:150)
at org.jboss.Main$1.run(Main.java:388)
at java.lang.Thread.run(Thread.java:534)
Found 1 deadlock.
----------------------------------------------------------------------
>Comment By: Laurent Etiemble (letiemble)
Date: 2003-10-10 00:42
Message:
Logged In: YES
user_id=437455
Can you explain the steps you have followed to catch this
deadlock ?
----------------------------------------------------------------------
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