Note: This bug is displayed in read-only format because the product is no longer active in Red Hat Bugzilla.

Bug 875614

Summary: Seam2.3 sporadic NPE in org.jboss.seam.jms.TopicSession.create(TopicSession.java:38)
Product: [Retired] JBoss Enterprise WFK Platform 2 Reporter: Marek Schmidt <maschmid>
Component: SeamAssignee: Marek Novotny <mnovotny>
Status: CLOSED INSUFFICIENT_DATA QA Contact: Marek Schmidt <maschmid>
Severity: medium Docs Contact:
Priority: unspecified    
Version: 2.1.0CC: misty, myarboro, snagarwa
Target Milestone: ---   
Target Release: 2.4.0   
Hardware: Unspecified   
OS: Unspecified   
Whiteboard: Seam2.3
Fixed In Version: Doc Type: Known Issue
Doc Text:
By design, Seam puts newly instantiated components into the scopes before calling the @Create or @PostConstruct methods. The Seam JMS Components TopicConnection and QueueConnection do not synchronize access to their @Create and @Unwrap methods. This causes multiple concurrent requests that are the first to require these components to inject instances of these built-in application-scoped components before they are instantiated. To work around this issue, you can force the components to be created during application start-up. In this case, there is no risk of this race condition occurring. The following example code shows how to apply this work-around: @Name("topicConnectionStartup") @Startup @Scope(ScopeType.APPLICATION) public class TopicConnectionStartup { @In(value="org.jboss.seam.jms.topicConnection", create=true) private TopicConnection topicConnection; } If you apply the work-around, the components are created during application start-up and no race condition occurs.
 Story Points: ---
Clone Of: Environment:
Solaris 11 x86, Sun JDK 1.6, EAP 6.0.0
Last Closed: 2013-07-22 13:24:41 UTC Type: Bug
Regression: --- Mount Type: ---
Documentation: --- CRM:
Verified Versions: Category: ---
oVirt Team: --- RHEL 7.3 requirements from Atomic Host:
Cloudforms Team: --- Target Upstream Version:
Embargoed:
Attachments:
Description Flags
server.log
none
server.log with seam TRACE logging enabled + additional Seam JMS logs none

Description Marek Schmidt 2012-11-12 08:11:55 UTC 
Created attachment 643290 [details]
server.log

Description of problem:

The remoting/chatroom example functional test sometimes fail with the following error in the server log: (the error occurs during the first attempt to connect)

14:05:21,673 ERROR [org.jboss.as.ejb3.invocation] (http-localhost/127.0.0.1:8080-4) JBAS014134: EJB Invocation failed on component ChatRoomAction for method public abstract boolean org.jboss.seam.example.remoting.chatroom.ChatRoomActionWebRemote.connect(java.lang.String): javax.ejb.EJBException: org.jboss.seam.InstantiationException: Could not instantiate Seam component: topicPublisher
	at org.jboss.as.ejb3.tx.CMTTxInterceptor.handleExceptionInOurTx(CMTTxInterceptor.java:165) [jboss-as-ejb3-7.1.2.Final-redhat-1.jar:7.1.2.Final-redhat-1]
	at org.jboss.as.ejb3.tx.CMTTxInterceptor.invokeInOurTx(CMTTxInterceptor.java:229) [jboss-as-ejb3-7.1.2.Final-redhat-1.jar:7.1.2.Final-redhat-1]
	at org.jboss.as.ejb3.tx.CMTTxInterceptor.required(CMTTxInterceptor.java:303) [jboss-as-ejb3-7.1.2.Final-redhat-1.jar:7.1.2.Final-redhat-1]
	at org.jboss.as.ejb3.tx.CMTTxInterceptor.processInvocation(CMTTxInterceptor.java:189) [jboss-as-ejb3-7.1.2.Final-redhat-1.jar:7.1.2.Final-redhat-1]
	at org.jboss.invocation.InterceptorContext.proceed(InterceptorContext.java:288) [jboss-invocation-1.1.1.Final-redhat-1.jar:1.1.1.Final-redhat-1]
	at org.jboss.as.ejb3.component.interceptors.CurrentInvocationContextInterceptor.processInvocation(CurrentInvocationContextInterceptor.java:41) [jboss-as-ejb3-7.1.2.Final-redhat-1.jar:7.1.2.Final-redhat-1]
	at org.jboss.invocation.InterceptorContext.proceed(InterceptorContext.java:288) [jboss-invocation-1.1.1.Final-redhat-1.jar:1.1.1.Final-redhat-1]
	at org.jboss.as.ejb3.component.interceptors.ShutDownInterceptorFactory$1.processInvocation(ShutDownInterceptorFactory.java:42) [jboss-as-ejb3-7.1.2.Final-redhat-1.jar:7.1.2.Final-redhat-1]
	at org.jboss.invocation.InterceptorContext.proceed(InterceptorContext.java:288) [jboss-invocation-1.1.1.Final-redhat-1.jar:1.1.1.Final-redhat-1]
	at org.jboss.as.ejb3.component.interceptors.LoggingInterceptor.processInvocation(LoggingInterceptor.java:59) [jboss-as-ejb3-7.1.2.Final-redhat-1.jar:7.1.2.Final-redhat-1]
	at org.jboss.invocation.InterceptorContext.proceed(InterceptorContext.java:288) [jboss-invocation-1.1.1.Final-redhat-1.jar:1.1.1.Final-redhat-1]
	at org.jboss.as.ee.component.NamespaceContextInterceptor.processInvocation(NamespaceContextInterceptor.java:50) [jboss-as-ee-7.1.2.Final-redhat-1.jar:7.1.2.Final-redhat-1]
	at org.jboss.invocation.InterceptorContext.proceed(InterceptorContext.java:288) [jboss-invocation-1.1.1.Final-redhat-1.jar:1.1.1.Final-redhat-1]
	at org.jboss.as.ejb3.component.interceptors.AdditionalSetupInterceptor.processInvocation(AdditionalSetupInterceptor.java:32) [jboss-as-ejb3-7.1.2.Final-redhat-1.jar:7.1.2.Final-redhat-1]
	at org.jboss.invocation.InterceptorContext.proceed(InterceptorContext.java:288) [jboss-invocation-1.1.1.Final-redhat-1.jar:1.1.1.Final-redhat-1]
	at org.jboss.as.ee.component.TCCLInterceptor.processInvocation(TCCLInterceptor.java:45) [jboss-as-ee-7.1.2.Final-redhat-1.jar:7.1.2.Final-redhat-1]
	at org.jboss.invocation.InterceptorContext.proceed(InterceptorContext.java:288) [jboss-invocation-1.1.1.Final-redhat-1.jar:1.1.1.Final-redhat-1]
	at org.jboss.invocation.ChainedInterceptor.processInvocation(ChainedInterceptor.java:61) [jboss-invocation-1.1.1.Final-redhat-1.jar:1.1.1.Final-redhat-1]
	at org.jboss.as.ee.component.ViewService$View.invoke(ViewService.java:165) [jboss-as-ee-7.1.2.Final-redhat-1.jar:7.1.2.Final-redhat-1]
	at org.jboss.as.ee.component.ViewDescription$1.processInvocation(ViewDescription.java:176) [jboss-as-ee-7.1.2.Final-redhat-1.jar:7.1.2.Final-redhat-1]
	at org.jboss.invocation.InterceptorContext.proceed(InterceptorContext.java:288) [jboss-invocation-1.1.1.Final-redhat-1.jar:1.1.1.Final-redhat-1]
	at org.jboss.as.ejb3.component.stateful.StatefulComponentIdInterceptor.processInvocation(StatefulComponentIdInterceptor.java:52) [jboss-as-ejb3-7.1.2.Final-redhat-1.jar:7.1.2.Final-redhat-1]
	at org.jboss.invocation.InterceptorContext.proceed(InterceptorContext.java:288) [jboss-invocation-1.1.1.Final-redhat-1.jar:1.1.1.Final-redhat-1]
	at org.jboss.invocation.ChainedInterceptor.processInvocation(ChainedInterceptor.java:61) [jboss-invocation-1.1.1.Final-redhat-1.jar:1.1.1.Final-redhat-1]
	at org.jboss.as.ee.component.ProxyInvocationHandler.invoke(ProxyInvocationHandler.java:72) [jboss-as-ee-7.1.2.Final-redhat-1.jar:7.1.2.Final-redhat-1]
	at org.jboss.seam.example.remoting.chatroom.ChatRoomActionWebRemote$$$view3.connect(Unknown Source) [chatroom-ejb.jar:]
	at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) [rt.jar:1.6.0_32]
	at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39) [rt.jar:1.6.0_32]
	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25) [rt.jar:1.6.0_32]
	at java.lang.reflect.Method.invoke(Method.java:597) [rt.jar:1.6.0_32]
	at org.jboss.seam.util.Reflections.invoke(Reflections.java:22) [jboss-seam.jar:2.3.0.Final-redhat-1]
	at org.jboss.seam.intercept.RootInvocationContext.proceed(RootInvocationContext.java:32) [jboss-seam.jar:2.3.0.Final-redhat-1]
	at org.jboss.seam.intercept.ClientSideInterceptor$1.proceed(ClientSideInterceptor.java:76) [jboss-seam.jar:2.3.0.Final-redhat-1]
	at org.jboss.seam.intercept.SeamInvocationContext.proceed(SeamInvocationContext.java:56) [jboss-seam.jar:2.3.0.Final-redhat-1]
	at org.jboss.seam.ejb.RemoveInterceptor.aroundInvoke(RemoveInterceptor.java:43) [jboss-seam.jar:2.3.0.Final-redhat-1]
	at org.jboss.seam.intercept.SeamInvocationContext.proceed(SeamInvocationContext.java:68) [jboss-seam.jar:2.3.0.Final-redhat-1]
	at org.jboss.seam.intercept.RootInterceptor.invoke(RootInterceptor.java:107) [jboss-seam.jar:2.3.0.Final-redhat-1]
	at org.jboss.seam.intercept.ClientSideInterceptor.invoke(ClientSideInterceptor.java:54) [jboss-seam.jar:2.3.0.Final-redhat-1]
	at org.javassist.tmp.java.lang.Object_$$_javassist_seam_2.connect(Object_$$_javassist_seam_2.java)
	at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) [rt.jar:1.6.0_32]
	at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39) [rt.jar:1.6.0_32]
	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25) [rt.jar:1.6.0_32]
	at java.lang.reflect.Method.invoke(Method.java:597) [rt.jar:1.6.0_32]
	at org.jboss.seam.remoting.Call.processInvocation(Call.java:208) [jboss-seam-remoting-2.3.0.Final-redhat-1.jar:2.3.0.Final-redhat-1]
	at org.jboss.seam.remoting.Call.execute(Call.java:144) [jboss-seam-remoting-2.3.0.Final-redhat-1.jar:2.3.0.Final-redhat-1]
	at org.jboss.seam.remoting.ExecutionHandler$1.process(ExecutionHandler.java:89) [jboss-seam-remoting-2.3.0.Final-redhat-1.jar:2.3.0.Final-redhat-1]
	at org.jboss.seam.servlet.ContextualHttpServletRequest.run(ContextualHttpServletRequest.java:65) [jboss-seam.jar:2.3.0.Final-redhat-1]
	at org.jboss.seam.remoting.ExecutionHandler.handle(ExecutionHandler.java:78) [jboss-seam-remoting-2.3.0.Final-redhat-1.jar:2.3.0.Final-redhat-1]
	at org.jboss.seam.remoting.Remoting.getResource(Remoting.java:111) [jboss-seam-remoting-2.3.0.Final-redhat-1.jar:2.3.0.Final-redhat-1]
	at org.jboss.seam.servlet.SeamResourceServlet.service(SeamResourceServlet.java:80) [jboss-seam.jar:2.3.0.Final-redhat-1]
	at javax.servlet.http.HttpServlet.service(HttpServlet.java:847) [jboss-servlet-api_3.0_spec-1.0.1.Final-redhat-1.jar:1.0.1.Final-redhat-1]
	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:329)
	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:248)
	at org.jboss.seam.servlet.SeamFilter$FilterChainImpl.doFilter(SeamFilter.java:83) [jboss-seam.jar:2.3.0.Final-redhat-1]
	at org.jboss.seam.web.LoggingFilter.doFilter(LoggingFilter.java:60) [jboss-seam.jar:2.3.0.Final-redhat-1]
	at org.jboss.seam.servlet.SeamFilter$FilterChainImpl.doFilter(SeamFilter.java:69) [jboss-seam.jar:2.3.0.Final-redhat-1]
	at org.jboss.seam.web.IdentityFilter.doFilter(IdentityFilter.java:40) [jboss-seam.jar:2.3.0.Final-redhat-1]
	at org.jboss.seam.servlet.SeamFilter$FilterChainImpl.doFilter(SeamFilter.java:69) [jboss-seam.jar:2.3.0.Final-redhat-1]
	at org.jboss.seam.web.MultipartFilter.doFilter(MultipartFilter.java:90) [jboss-seam.jar:2.3.0.Final-redhat-1]
	at org.jboss.seam.servlet.SeamFilter$FilterChainImpl.doFilter(SeamFilter.java:69) [jboss-seam.jar:2.3.0.Final-redhat-1]
	at org.jboss.seam.web.ExceptionFilter.doFilter(ExceptionFilter.java:64) [jboss-seam.jar:2.3.0.Final-redhat-1]
	at org.jboss.seam.servlet.SeamFilter$FilterChainImpl.doFilter(SeamFilter.java:69) [jboss-seam.jar:2.3.0.Final-redhat-1]
	at org.jboss.seam.web.RedirectFilter.doFilter(RedirectFilter.java:45) [jboss-seam.jar:2.3.0.Final-redhat-1]
	at org.jboss.seam.servlet.SeamFilter$FilterChainImpl.doFilter(SeamFilter.java:69) [jboss-seam.jar:2.3.0.Final-redhat-1]
	at org.jboss.seam.servlet.SeamFilter.doFilter(SeamFilter.java:158) [jboss-seam.jar:2.3.0.Final-redhat-1]
	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:280)
	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:248)
	at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:275)
	at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:161)
	at org.jboss.as.web.security.SecurityContextAssociationValve.invoke(SecurityContextAssociationValve.java:153)
	at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:155)
	at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:102)
	at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:109)
	at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:368)
	at org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:877)
	at org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.process(Http11Protocol.java:679)
	at org.apache.tomcat.util.net.JIoEndpoint$Worker.run(JIoEndpoint.java:931)
	at java.lang.Thread.run(Thread.java:662) [rt.jar:1.6.0_32]
Caused by: org.jboss.seam.InstantiationException: Could not instantiate Seam component: topicPublisher
	at org.jboss.seam.Component.newInstance(Component.java:2208) [jboss-seam.jar:2.3.0.Final-redhat-1]
	at org.jboss.seam.Component.getInstance(Component.java:2034) [jboss-seam.jar:2.3.0.Final-redhat-1]
	at org.jboss.seam.Component.getInstance(Component.java:1996) [jboss-seam.jar:2.3.0.Final-redhat-1]
	at org.jboss.seam.Component.getInstanceInAllNamespaces(Component.java:2414) [jboss-seam.jar:2.3.0.Final-redhat-1]
	at org.jboss.seam.Component.getValueToInject(Component.java:2366) [jboss-seam.jar:2.3.0.Final-redhat-1]
	at org.jboss.seam.Component.injectAttributes(Component.java:1743) [jboss-seam.jar:2.3.0.Final-redhat-1]
	at org.jboss.seam.Component.inject(Component.java:1561) [jboss-seam.jar:2.3.0.Final-redhat-1]
	at org.jboss.seam.core.BijectionInterceptor.aroundInvoke(BijectionInterceptor.java:61) [jboss-seam.jar:2.3.0.Final-redhat-1]
	at org.jboss.seam.intercept.SeamInvocationContext.proceed(SeamInvocationContext.java:68) [jboss-seam.jar:2.3.0.Final-redhat-1]
	at org.jboss.seam.core.ConversationInterceptor.aroundInvoke(ConversationInterceptor.java:56) [jboss-seam.jar:2.3.0.Final-redhat-1]
	at org.jboss.seam.intercept.SeamInvocationContext.proceed(SeamInvocationContext.java:68) [jboss-seam.jar:2.3.0.Final-redhat-1]
	at org.jboss.seam.core.MethodContextInterceptor.aroundInvoke(MethodContextInterceptor.java:44) [jboss-seam.jar:2.3.0.Final-redhat-1]
	at org.jboss.seam.intercept.SeamInvocationContext.proceed(SeamInvocationContext.java:68) [jboss-seam.jar:2.3.0.Final-redhat-1]
	at org.jboss.seam.persistence.EntityManagerProxyInterceptor.aroundInvoke(EntityManagerProxyInterceptor.java:29) [jboss-seam.jar:2.3.0.Final-redhat-1]
	at org.jboss.seam.intercept.SeamInvocationContext.proceed(SeamInvocationContext.java:68) [jboss-seam.jar:2.3.0.Final-redhat-1]
	at org.jboss.seam.persistence.HibernateSessionProxyInterceptor.aroundInvoke(HibernateSessionProxyInterceptor.java:30) [jboss-seam.jar:2.3.0.Final-redhat-1]
	at org.jboss.seam.intercept.SeamInvocationContext.proceed(SeamInvocationContext.java:68) [jboss-seam.jar:2.3.0.Final-redhat-1]
	at org.jboss.seam.intercept.RootInterceptor.invoke(RootInterceptor.java:107) [jboss-seam.jar:2.3.0.Final-redhat-1]
	at org.jboss.seam.intercept.SessionBeanInterceptor.aroundInvoke(SessionBeanInterceptor.java:50) [jboss-seam.jar:2.3.0.Final-redhat-1]
	at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) [rt.jar:1.6.0_32]
	at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39) [rt.jar:1.6.0_32]
	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25) [rt.jar:1.6.0_32]
	at java.lang.reflect.Method.invoke(Method.java:597) [rt.jar:1.6.0_32]
	at org.jboss.as.ee.component.ManagedReferenceLifecycleMethodInterceptorFactory$ManagedReferenceLifecycleMethodInterceptor.processInvocation(ManagedReferenceLifecycleMethodInterceptorFactory.java:123) [jboss-as-ee-7.1.2.Final-redhat-1.jar:7.1.2.Final-redhat-1]
	at org.jboss.invocation.InterceptorContext.proceed(InterceptorContext.java:288) [jboss-invocation-1.1.1.Final-redhat-1.jar:1.1.1.Final-redhat-1]
	at org.jboss.invocation.WeavedInterceptor.processInvocation(WeavedInterceptor.java:53) [jboss-invocation-1.1.1.Final-redhat-1.jar:1.1.1.Final-redhat-1]
	at org.jboss.as.ee.component.interceptors.UserInterceptorFactory$1.processInvocation(UserInterceptorFactory.java:36) [jboss-as-ee-7.1.2.Final-redhat-1.jar:7.1.2.Final-redhat-1]
	at org.jboss.invocation.InterceptorContext.proceed(InterceptorContext.java:288) [jboss-invocation-1.1.1.Final-redhat-1.jar:1.1.1.Final-redhat-1]
	at org.jboss.as.ejb3.component.invocationmetrics.ExecutionTimeInterceptor.processInvocation(ExecutionTimeInterceptor.java:43) [jboss-as-ejb3-7.1.2.Final-redhat-1.jar:7.1.2.Final-redhat-1]
	at org.jboss.invocation.InterceptorContext.proceed(InterceptorContext.java:288) [jboss-invocation-1.1.1.Final-redhat-1.jar:1.1.1.Final-redhat-1]
	at org.jboss.as.jpa.interceptor.SBInvocationInterceptor.processInvocation(SBInvocationInterceptor.java:47)
	at org.jboss.invocation.InterceptorContext.proceed(InterceptorContext.java:288) [jboss-invocation-1.1.1.Final-redhat-1.jar:1.1.1.Final-redhat-1]
	at org.jboss.as.jpa.interceptor.SFSBInvocationInterceptor.processInvocation(SFSBInvocationInterceptor.java:58)
	at org.jboss.invocation.InterceptorContext.proceed(InterceptorContext.java:288) [jboss-invocation-1.1.1.Final-redhat-1.jar:1.1.1.Final-redhat-1]
	at org.jboss.as.ejb3.component.stateful.StatefulSessionSynchronizationInterceptor.processInvocation(StatefulSessionSynchronizationInterceptor.java:156) [jboss-as-ejb3-7.1.2.Final-redhat-1.jar:7.1.2.Final-redhat-1]
	at org.jboss.invocation.InterceptorContext.proceed(InterceptorContext.java:288) [jboss-invocation-1.1.1.Final-redhat-1.jar:1.1.1.Final-redhat-1]
	at org.jboss.invocation.InitialInterceptor.processInvocation(InitialInterceptor.java:21) [jboss-invocation-1.1.1.Final-redhat-1.jar:1.1.1.Final-redhat-1]
	at org.jboss.invocation.InterceptorContext.proceed(InterceptorContext.java:288) [jboss-invocation-1.1.1.Final-redhat-1.jar:1.1.1.Final-redhat-1]
	at org.jboss.invocation.ChainedInterceptor.processInvocation(ChainedInterceptor.java:61) [jboss-invocation-1.1.1.Final-redhat-1.jar:1.1.1.Final-redhat-1]
	at org.jboss.as.ee.component.interceptors.ComponentDispatcherInterceptor.processInvocation(ComponentDispatcherInterceptor.java:53) [jboss-as-ee-7.1.2.Final-redhat-1.jar:7.1.2.Final-redhat-1]
	at org.jboss.invocation.InterceptorContext.proceed(InterceptorContext.java:288) [jboss-invocation-1.1.1.Final-redhat-1.jar:1.1.1.Final-redhat-1]
	at org.jboss.as.ejb3.component.stateful.StatefulComponentInstanceInterceptor.processInvocation(StatefulComponentInstanceInterceptor.java:67) [jboss-as-ejb3-7.1.2.Final-redhat-1.jar:7.1.2.Final-redhat-1]
	at org.jboss.invocation.InterceptorContext.proceed(InterceptorContext.java:288) [jboss-invocation-1.1.1.Final-redhat-1.jar:1.1.1.Final-redhat-1]
	at org.jboss.as.ejb3.tx.CMTTxInterceptor.invokeInOurTx(CMTTxInterceptor.java:227) [jboss-as-ejb3-7.1.2.Final-redhat-1.jar:7.1.2.Final-redhat-1]
	... 76 more
Caused by: org.jboss.seam.InstantiationException: Could not instantiate Seam component: org.jboss.seam.jms.topicSession
	at org.jboss.seam.Component.newInstance(Component.java:2208) [jboss-seam.jar:2.3.0.Final-redhat-1]
	at org.jboss.seam.Component.getInstance(Component.java:2034) [jboss-seam.jar:2.3.0.Final-redhat-1]
	at org.jboss.seam.Component.getInstance(Component.java:1996) [jboss-seam.jar:2.3.0.Final-redhat-1]
	at org.jboss.seam.Component.getInstance(Component.java:1990) [jboss-seam.jar:2.3.0.Final-redhat-1]
	at org.jboss.seam.Component.getInstance(Component.java:1970) [jboss-seam.jar:2.3.0.Final-redhat-1]
	at org.jboss.seam.Component.getInstance(Component.java:1965) [jboss-seam.jar:2.3.0.Final-redhat-1]
	at org.jboss.seam.jms.TopicSession.instance(TopicSession.java:55) [jboss-seam.jar:2.3.0.Final-redhat-1]
	at org.jboss.seam.jms.ManagedTopicPublisher.create(ManagedTopicPublisher.java:53) [jboss-seam.jar:2.3.0.Final-redhat-1]
	at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) [rt.jar:1.6.0_32]
	at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39) [rt.jar:1.6.0_32]
	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25) [rt.jar:1.6.0_32]
	at java.lang.reflect.Method.invoke(Method.java:597) [rt.jar:1.6.0_32]
	at org.jboss.seam.util.Reflections.invoke(Reflections.java:22) [jboss-seam.jar:2.3.0.Final-redhat-1]
	at org.jboss.seam.util.Reflections.invokeAndWrap(Reflections.java:144) [jboss-seam.jar:2.3.0.Final-redhat-1]
	at org.jboss.seam.Component.callComponentMethod(Component.java:2313) [jboss-seam.jar:2.3.0.Final-redhat-1]
	at org.jboss.seam.Component.callCreateMethod(Component.java:2236) [jboss-seam.jar:2.3.0.Final-redhat-1]
	at org.jboss.seam.Component.newInstance(Component.java:2196) [jboss-seam.jar:2.3.0.Final-redhat-1]
	... 119 more
Caused by: java.lang.NullPointerException
	at org.jboss.seam.jms.TopicSession.create(TopicSession.java:38) [jboss-seam.jar:2.3.0.Final-redhat-1]
	at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) [rt.jar:1.6.0_32]
	at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39) [rt.jar:1.6.0_32]
	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25) [rt.jar:1.6.0_32]
	at java.lang.reflect.Method.invoke(Method.java:597) [rt.jar:1.6.0_32]
	at org.jboss.seam.util.Reflections.invoke(Reflections.java:22) [jboss-seam.jar:2.3.0.Final-redhat-1]
	at org.jboss.seam.util.Reflections.invokeAndWrap(Reflections.java:144) [jboss-seam.jar:2.3.0.Final-redhat-1]
	at org.jboss.seam.Component.callComponentMethod(Component.java:2313) [jboss-seam.jar:2.3.0.Final-redhat-1]
	at org.jboss.seam.Component.callCreateMethod(Component.java:2236) [jboss-seam.jar:2.3.0.Final-redhat-1]
	at org.jboss.seam.Component.newInstance(Component.java:2196) [jboss-seam.jar:2.3.0.Final-redhat-1]
	... 135 more

Version-Release number of selected component (if applicable):
WFK 2.1.0.CR1 jboss-seam-2.3.0.Final-redhat-1

How reproducible:
Only sometimes

Steps to Reproduce:
1. Run the remoting/chatroom example functional test on EAP6
  
Actual results:
The test sometimes fail

Expected results:
The test always pass

Additional info:
I have not yet been able to reproduce the issue locally.
Comment 1 mark yarborough 2012-11-12 14:45:51 UTC 
CCFR from QE Marek Schmidt).
Comment 2 Marek Schmidt 2012-11-13 12:26:55 UTC 
After further investigation, the problem seems to be a concurrent access to the application-scoped org.jboss.seam.jms.topicConnection component. The first thread is still in the @Create init() method waiting for the TopicConnectionFactory.createTopicConnection() call, while the other thread also tries to inject the org.jboss.seam.jms.topicConnection component. The second thread retrieves the component, since it has been created by the first thread, but it has not yet been initialized, so the topicConnection is null, hence the NPE.

A workaround is to force the topicConnection to be created during app startup, so there would be no risk of having this race during concurrent requests. e.g.:

@Name("topicConnectionStartup")
@Startup
@Scope(ScopeType.APPLICATION)
public class TopicConnectionStartup {
	@In(value="org.jboss.seam.jms.topicConnection", create=true)
	private TopicConnection topicConnection;
}
Comment 3 Marek Schmidt 2012-11-13 12:28:06 UTC 
Created attachment 644084 [details]
server.log with seam TRACE logging enabled + additional Seam JMS logs
Comment 4 Sneha 2013-03-25 06:44:42 UTC 
Doc Text is up to date.