MDB(Connection Consumer Thread) stop on rare occasions by JMSSecurityException ------------------------------------------------------------------------------ Key: JBAS-8267 URL: https://jira.jboss.org/browse/JBAS-8267 Project: JBoss Application Server Issue Type: Bug Security Level: Public (Everyone can see) Components: JMS (JBossMQ) Affects Versions: JBossAS-4.2.2.GA, JBossAS-4.0.5.GA, JBossAS-4.0.2 Final Environment: Java VM: Java HotSpot(TM) Client VM 1.4.2_19-b04,Sun Microsystems Inc. OS-System: Windows XP SP3 Reporter: Hiroyuki Wada Assignee: Adrian Brock When MDB's connection thread (Connection Consumer Thread) receive a message, JMSSecurityException is throwed on rare occasions. And the thread go down, so MDB don't be executed if a message be sent. Following stacktrace is visible in server.log. 10:39:15,796 WARN [SpyConnectionConsumer] Connection consumer closing due to error in listening thread SpyConnectionConsumer[sub=Subscription[subId=-2147483648connection=ConnectionToken:ID:1/a347321b2793ca494842452c5278a657 destination=TOPIC.testTopic messageSelector=null Local Create] messages=0 waitingForMessage=false internalThread=Thread[Connection Consumer for dest Subscription[subId=-2147483648connection=ConnectionToken:ID:1/a347321b2793ca494842452c5278a657 destination=TOPIC.testTopic messageSelector=null Local Create] id=1,5,jboss] sessionPool=org.jboss.jms.asf.StdServerSessionPool@1ce9085 connection=Connection@13008985[token=ConnectionToken:ID:1/a347321b2793ca494842452c5278a657 rcvstate=STARTED]] javax.jms.JMSSecurityException: User session is not valid at org.jboss.mq.security.SecurityManager.authorize(SecurityManager.java:230) at org.jboss.mq.security.ServerSecurityInterceptor.authorizeRead(ServerSecurityInterceptor.java:233) at org.jboss.mq.security.ServerSecurityInterceptor.receive(ServerSecurityInterceptor.java:98) at org.jboss.mq.server.TracingInterceptor.receive(TracingInterceptor.java:570) at org.jboss.mq.server.JMSServerInvoker.receive(JMSServerInvoker.java:226) at org.jboss.mq.il.jvm.JVMServerIL.receive(JVMServerIL.java:244) at org.jboss.mq.Connection.receive(Connection.java:909) at org.jboss.mq.SpyConnectionConsumer.run(SpyConnectionConsumer.java:238) at java.lang.Thread.run(Thread.java:534) It looks like a synchronization problem. In 'org.jboss.mq.security.SecurityManager#authorize' method, 'authCache' variable is accessed by HashMap#get method but it's not synchronized. When other thread put object to the 'authCache' variable, the HashMap#get methos will return null on rare occasions even though the key is contained. so when the return value is null, JMSSecurityException is throwed. SubjectInfo info = (SubjectInfo) authCache.get(token.getSessionId()); if (info == null) throw new JMSSecurityException("User session is not valid"); I wrote a patch for JBossAS Branch_4_0 and Branch_4_2. It is very simple patch that add synchorized block. -- This message is automatically generated by JIRA. - If you think it was sent incorrectly contact one of the administrators: https://jira.jboss.org/secure/Administrators.jspa - For more information on JIRA, see: http://www.atlassian.com/software/jira