[jboss-user] [EJB 3.0 Development] - Possible Deadlock Jboss 4.2.3
Daniel Cullender [http://community.jboss.org/people/cullendw] created the discussion
"Possible Deadlock Jboss 4.2.3"
To view the discussion, visit: http://community.jboss.org/message/541800#541800
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Hi,
We have been running jboss 4.2.3 for a while now. Recently we have been getting deadlocks
and we are battling to narrow down the exact cause. This happens randomly and can take
hours to occur. When doing a stack trace, we find the following culprits :
*Thread: WorkManager(2)-38* : priority:5, demon:true, threadId:479, threadState:BLOCKED,
lockName:java.lang.Class@741b31f2
java.lang.Class.initAnnotationsIfNecessary(Class.java:3067)
java.lang.Class.getAnnotation(Class.java:3029)
org.jboss.aop.annotation.AnnotationElement.getVisibleAnnotation(AnnotationElement.java:88)
org.jboss.aop.Advisor.resolveAnnotation(Advisor.java:321)
org.jboss.ejb3.security.Ejb3AuthenticationInterceptor.invoke(Ejb3AuthenticationInterceptor.java:74)
org.jboss.aop.joinpoint.MethodInvocation.invokeNext(MethodInvocation.java:101)
org.jboss.ejb3.ENCPropagationInterceptor.invoke(ENCPropagationInterceptor.java:46)
org.jboss.aop.joinpoint.MethodInvocation.invokeNext(MethodInvocation.java:101)
org.jboss.ejb3.asynchronous.AsynchronousInterceptor.invoke(AsynchronousInterceptor.java:106)
org.jboss.aop.joinpoint.MethodInvocation.invokeNext(MethodInvocation.java:101)
org.jboss.ejb3.service.ServiceContainer.localInvoke(ServiceContainer.java:329)
org.jboss.ejb3.service.ServiceContainer.localInvoke(ServiceContainer.java:294)
org.jboss.ejb3.service.ServiceMBeanDelegate.invoke(ServiceMBeanDelegate.java:215)
org.jboss.mx.server.RawDynamicInvoker.invoke(RawDynamicInvoker.java:164)
org.jboss.mx.server.MBeanServerImpl.invoke(MBeanServerImpl.java:659)
org.jboss.mx.util.MBeanProxyExt.invoke(MBeanProxyExt.java:210)
$Proxy101.get(Unknown Source)
*Thread: AsyncNotifier-401* : priority:5, demon:false, threadId:812, threadState:BLOCKED,
lockName:java.lang.Class@741b31f2
java.lang.Class.initAnnotationsIfNecessary(Class.java:3067)
java.lang.Class.getAnnotation(Class.java:3029)
org.jboss.aop.annotation.AnnotationElement.getVisibleAnnotation(AnnotationElement.java:88)
org.jboss.aop.Advisor.resolveAnnotation(Advisor.java:321)
org.jboss.ejb3.security.Ejb3AuthenticationInterceptor.invoke(Ejb3AuthenticationInterceptor.java:74)
org.jboss.aop.joinpoint.MethodInvocation.invokeNext(MethodInvocation.java:101)
org.jboss.ejb3.ENCPropagationInterceptor.invoke(ENCPropagationInterceptor.java:46)
org.jboss.aop.joinpoint.MethodInvocation.invokeNext(MethodInvocation.java:101)
org.jboss.ejb3.asynchronous.AsynchronousInterceptor.invoke(AsynchronousInterceptor.java:106)
org.jboss.aop.joinpoint.MethodInvocation.invokeNext(MethodInvocation.java:101)
org.jboss.ejb3.service.ServiceContainer.localInvoke(ServiceContainer.java:329)
org.jboss.ejb3.service.ServiceContainer.localInvoke(ServiceContainer.java:294)
org.jboss.ejb3.service.ServiceMBeanDelegate.invoke(ServiceMBeanDelegate.java:215)
org.jboss.mx.server.RawDynamicInvoker.invoke(RawDynamicInvoker.java:164)
org.jboss.mx.server.MBeanServerImpl.invoke(MBeanServerImpl.java:659)
org.jboss.mx.util.MBeanProxyExt.invoke(MBeanProxyExt.java:210)
$Proxy101.get(Unknown Source)
The method java.lang.Class.initAnnotationsIfNecessary is synchronized and it seems that
both threads are hanging on the same class java.lang.Class@741b31f2.
Any ideas why this would start happening all of a sudden? We upgraded to the latest java 6
patch recently and I am curious if any changes were made to the Class class ....
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