Return-Path: Delivered-To: apmail-geronimo-dev-archive@www.apache.org Received: (qmail 47596 invoked from network); 4 Jun 2006 03:45:33 -0000 Received: from hermes.apache.org (HELO mail.apache.org) (209.237.227.199) by minotaur.apache.org with SMTP; 4 Jun 2006 03:45:32 -0000 Received: (qmail 32121 invoked by uid 500); 4 Jun 2006 03:45:30 -0000 Delivered-To: apmail-geronimo-dev-archive@geronimo.apache.org Received: (qmail 31783 invoked by uid 500); 4 Jun 2006 03:45:29 -0000 Mailing-List: contact dev-help@geronimo.apache.org; run by ezmlm Precedence: bulk list-help: list-unsubscribe: List-Post: Reply-To: dev@geronimo.apache.org List-Id: Delivered-To: mailing list dev@geronimo.apache.org Received: (qmail 31772 invoked by uid 99); 4 Jun 2006 03:45:29 -0000 Received: from asf.osuosl.org (HELO asf.osuosl.org) (140.211.166.49) by apache.org (qpsmtpd/0.29) with ESMTP; Sat, 03 Jun 2006 20:45:29 -0700 X-ASF-Spam-Status: No, hits=0.0 required=10.0 tests= X-Spam-Check-By: apache.org Received: from [209.237.227.198] (HELO brutus.apache.org) (209.237.227.198) by apache.org (qpsmtpd/0.29) with ESMTP; Sat, 03 Jun 2006 20:45:27 -0700 Received: from brutus (localhost [127.0.0.1]) by brutus.apache.org (Postfix) with ESMTP id 10BB57141F4 for ; Sun, 4 Jun 2006 03:44:31 +0000 (GMT) Message-ID: <4024501.1149392671065.JavaMail.jira@brutus> Date: Sun, 4 Jun 2006 03:44:31 +0000 (GMT+00:00) From: "David Jencks (JIRA)" To: dev@geronimo.apache.org Subject: [jira] Assigned: (GERONIMO-2081) Concurrency problems in Daytrader or AMQ In-Reply-To: <26137533.1149392429886.JavaMail.jira@brutus> MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: 7bit X-Virus-Checked: Checked by ClamAV on apache.org X-Spam-Rating: minotaur.apache.org 1.6.2 0/1000/N [ http://issues.apache.org/jira/browse/GERONIMO-2081?page=all ] David Jencks reassigned GERONIMO-2081: -------------------------------------- Assign To: Hiram Chirino (was: David Jencks) Hiram, is it allowable for a servlet to cache a jms connection handle and share it across hundreds of threads? If so, there are concurrency problems in amq 3.2.4-SNAPSHOT :-) > Concurrency problems in Daytrader or AMQ > ---------------------------------------- > > Key: GERONIMO-2081 > URL: http://issues.apache.org/jira/browse/GERONIMO-2081 > Project: Geronimo > Type: Bug > Security: public(Regular issues) > Components: sample apps > Versions: 1.1 > Reporter: David Jencks > Assignee: Hiram Chirino > Fix For: 1.1 > > Brian Noll found a bunch of ConcurrentModificationException problems when running daytrader PingServlet2MDBQueue under mutltithread load. These are due either to PingServlet2MDBQueue sharing a connection between all 50+ threads or activemq not allowing such connection sharing. I'm going to remove the connection sharing in daytrader and ask Hiram to figure out if AMQ needs more synchronization. > Here's the stack trace Brian got, showing at least 2 concurrency problems: > 18:35:41,171 ERROR [Log] Error: PingServlet2MDBQueue.doGet(...):exception posting message to TradeBrokerQueue destination > 18:35:41,172 ERROR [Log] Error: PingServlet2MDBQueue.doGet(...): error > > java.util.ConcurrentModificationException > java.util.ConcurrentModificationException > at java.util.AbstractList$Itr.checkForComodification(AbstractList.java:448) > at java.util.AbstractList$Itr.next(AbstractList.java:419) > at java.util.AbstractCollection.remove(AbstractCollection.java:254) > at org.activemq.TransactionContext.removeSession(TransactionContext.java:116) > at org.activemq.ra.RATransactionContext.removeSession(RATransactionContext.java:57) > at org.activemq.ActiveMQSession.doClose(ActiveMQSession.java:466) > at org.activemq.ActiveMQSession.close(ActiveMQSession.java:447) > at org.activemq.ra.JMSSessionProxy.cleanup(JMSSessionProxy.java:87) > at org.activemq.ra.JMSSessionProxy.close(JMSSessionProxy.java:76) > at org.apache.geronimo.samples.daytrader.web.prims.PingServlet2MDBQueue.doGet(PingServlet2MDBQueue.java:127) > at javax.servlet.http.HttpServlet.service(HttpServlet.java:595) > at javax.servlet.http.HttpServlet.service(HttpServlet.java:688) > at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:252) > at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:173) > at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:213) > at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:178) > at org.apache.geronimo.tomcat.valve.DefaultSubjectValve.invoke(DefaultSubjectValve.java:46) > at org.apache.geronimo.tomcat.GeronimoStandardContext$SystemMethodValve.invoke(GeronimoStandardContext.java:342) > at org.apache.geronimo.tomcat.valve.GeronimoBeforeAfterValve.invoke(GeronimoBeforeAfterValve.java:31) > at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:126) > at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:105) > at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:107) > at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:148) > at org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:869) > at org.apache.coyote.http11.Http11BaseProtocol$Http11ConnectionHandler.processConnection(Http11BaseProtocol.java:667) > at org.apache.tomcat.util.net.PoolTcpEndpoint.processSocket(PoolTcpEndpoint.java:527) > at org.apache.tomcat.util.net.LeaderFollowerWorkerThread.runIt(LeaderFollowerWorkerThread.java:80) > at org.apache.tomcat.util.threads.ThreadPool$ControlRunnable.run(ThreadPool.java:684) > at java.lang.Thread.run(Thread.java:534) > java.util.ConcurrentModificationException > at java.util.AbstractList$Itr.checkForComodification(AbstractList.java:448) > at java.util.AbstractList$Itr.next(AbstractList.java:419) > at java.util.AbstractCollection.remove(AbstractCollection.java:254) > at org.activemq.TransactionContext.removeSession(TransactionContext.java:116) > at org.activemq.ra.RATransactionContext.removeSession(RATransactionContext.java:57) > at org.activemq.ActiveMQSession.doClose(ActiveMQSession.java:466) > at org.activemq.ActiveMQSession.close(ActiveMQSession.java:447) > at org.activemq.ra.JMSSessionProxy.cleanup(JMSSessionProxy.java:87) > at org.activemq.ra.JMSSessionProxy.close(JMSSessionProxy.java:76) > at org.apache.geronimo.samples.daytrader.web.prims.PingServlet2MDBQueue.doGet(PingServlet2MDBQueue.java:127) > at javax.servlet.http.HttpServlet.service(HttpServlet.java:595) > at javax.servlet.http.HttpServlet.service(HttpServlet.java:688) > at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:252) > at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:173) > at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:213) > at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:178) > at org.apache.geronimo.tomcat.valve.DefaultSubjectValve.invoke(DefaultSubjectValve.java:46) > at org.apache.geronimo.tomcat.GeronimoStandardContext$SystemMethodValve.invoke(GeronimoStandardContext.java:342) > at org.apache.geronimo.tomcat.valve.GeronimoBeforeAfterValve.invoke(GeronimoBeforeAfterValve.java:31) > at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:126) > at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:105) > at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:107) > at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:148) > at org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:869) > at org.apache.coyote.http11.Http11BaseProtocol$Http11ConnectionHandler.processConnection(Http11BaseProtocol.java:667) > at org.apache.tomcat.util.net.PoolTcpEndpoint.processSocket(PoolTcpEndpoint.java:527) > at org.apache.tomcat.util.net.LeaderFollowerWorkerThread.runIt(LeaderFollowerWorkerThread.java:80) > at org.apache.tomcat.util.threads.ThreadPool$ControlRunnable.run(ThreadPool.java:684) > at java.lang.Thread.run(Thread.java:534) > java.lang.NullPointerException > at jsp.error_jsp._jspService(error_jsp.java:65) > at org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:97) > at javax.servlet.http.HttpServlet.service(HttpServlet.java:688) > at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:252) > at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:173) > at org.apache.catalina.core.ApplicationDispatcher.invoke(ApplicationDispatcher.java:672) > at org.apache.catalina.core.ApplicationDispatcher.processRequest(ApplicationDispatcher.java:465) > at org.apache.catalina.core.ApplicationDispatcher.doForward(ApplicationDispatcher.java:398) > at org.apache.catalina.core.ApplicationDispatcher.forward(ApplicationDispatcher.java:301) > at org.apache.catalina.core.StandardHostValve.custom(StandardHostValve.java:363) > at org.apache.catalina.core.StandardHostValve.status(StandardHostValve.java:284) > at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:136) > at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:105) > at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:107) > at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:148) > at org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:869) > at org.apache.coyote.http11.Http11BaseProtocol$Http11ConnectionHandler.processConnection(Http11BaseProtocol.java:667) > at org.apache.tomcat.util.net.PoolTcpEndpoint.processSocket(PoolTcpEndpoint.java:527) > at org.apache.tomcat.util.net.LeaderFollowerWorkerThread.runIt(LeaderFollowerWorkerThread.java:80) > at org.apache.tomcat.util.threads.ThreadPool$ControlRunnable.run(ThreadPool.java:684) > at java.lang.Thread.run(Thread.java:534) > 18:35:52,477 ERROR [Log] Error: PingServlet2MDBQueue.doGet(...):exception posting message to TradeBrokerQueue destination > 18:35:52,478 ERROR [Log] Error: PingServlet2MDBQueue.doGet(...): error > > java.lang.ArrayIndexOutOfBoundsException > java.lang.ArrayIndexOutOfBoundsException > at java.lang.System.arraycopy(Native Method) > at java.util.ArrayList.ensureCapacity(ArrayList.java:170) > at java.util.ArrayList.add(ArrayList.java:354) > at org.activemq.ra.JMSConnectionProxy.createSessionProxy(JMSConnectionProxy.java:121) > at org.activemq.ra.JMSConnectionProxy.createSession(JMSConnectionProxy.java:106) > at org.apache.geronimo.samples.daytrader.web.prims.PingServlet2MDBQueue.doGet(PingServlet2MDBQueue.java:117) > at javax.servlet.http.HttpServlet.service(HttpServlet.java:595) > at javax.servlet.http.HttpServlet.service(HttpServlet.java:688) > at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:252) > at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:173) > at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:213) > at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:178) > at org.apache.geronimo.tomcat.valve.DefaultSubjectValve.invoke(DefaultSubjectValve.java:46) > at org.apache.geronimo.tomcat.GeronimoStandardContext$SystemMethodValve.invoke(GeronimoStandardContext.java:342) > at org.apache.geronimo.tomcat.valve.GeronimoBeforeAfterValve.invoke(GeronimoBeforeAfterValve.java:31) > at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:126) > at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:105) > at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:107) > at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:148) > at org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:869) > at org.apache.coyote.http11.Http11BaseProtocol$Http11ConnectionHandler.processConnection(Http11BaseProtocol.java:667) > at org.apache.tomcat.util.net.PoolTcpEndpoint.processSocket(PoolTcpEndpoint.java:527) > at org.apache.tomcat.util.net.LeaderFollowerWorkerThread.runIt(LeaderFollowerWorkerThread.java:80) > at org.apache.tomcat.util.threads.ThreadPool$ControlRunnable.run(ThreadPool.java:684) > at java.lang.Thread.run(Thread.java:534) > java.lang.ArrayIndexOutOfBoundsException > at java.lang.System.arraycopy(Native Method) > at java.util.ArrayList.ensureCapacity(ArrayList.java:170) > at java.util.ArrayList.add(ArrayList.java:354) > at org.activemq.ra.JMSConnectionProxy.createSessionProxy(JMSConnectionProxy.java:121) > at org.activemq.ra.JMSConnectionProxy.createSession(JMSConnectionProxy.java:106) > at org.apache.geronimo.samples.daytrader.web.prims.PingServlet2MDBQueue.doGet(PingServlet2MDBQueue.java:117) > at javax.servlet.http.HttpServlet.service(HttpServlet.java:595) > at javax.servlet.http.HttpServlet.service(HttpServlet.java:688) > at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:252) > at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:173) > at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:213) > at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:178) > at org.apache.geronimo.tomcat.valve.DefaultSubjectValve.invoke(DefaultSubjectValve.java:46) > at org.apache.geronimo.tomcat.GeronimoStandardContext$SystemMethodValve.invoke(GeronimoStandardContext.java:342) > at org.apache.geronimo.tomcat.valve.GeronimoBeforeAfterValve.invoke(GeronimoBeforeAfterValve.java:31) > at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:126) > at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:105) > at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:107) > at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:148) > at org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:869) > at org.apache.coyote.http11.Http11BaseProtocol$Http11ConnectionHandler.processConnection(Http11BaseProtocol.java:667) > at org.apache.tomcat.util.net.PoolTcpEndpoint.processSocket(PoolTcpEndpoint.java:527) > at org.apache.tomcat.util.net.LeaderFollowerWorkerThread.runIt(LeaderFollowerWorkerThread.java:80) > at org.apache.tomcat.util.threads.ThreadPool$ControlRunnable.run(ThreadPool.java:684) > at java.lang.Thread.run(Thread.java:534) > java.lang.NullPointerException > at jsp.error_jsp._jspService(error_jsp.java:65) > at org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:97) > at javax.servlet.http.HttpServlet.service(HttpServlet.java:688) > at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:252) > at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:173) > at org.apache.catalina.core.ApplicationDispatcher.invoke(ApplicationDispatcher.java:672) > at org.apache.catalina.core.ApplicationDispatcher.processRequest(ApplicationDispatcher.java:465) > at org.apache.catalina.core.ApplicationDispatcher.doForward(ApplicationDispatcher.java:398) > at org.apache.catalina.core.ApplicationDispatcher.forward(ApplicationDispatcher.java:301) > at org.apache.catalina.core.StandardHostValve.custom(StandardHostValve.java:363) > at org.apache.catalina.core.StandardHostValve.status(StandardHostValve.java:284) > at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:136) > at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:105) > at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:107) > at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:148) > at org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:869) > at org.apache.coyote.http11.Http11BaseProtocol$Http11ConnectionHandler.processConnection(Http11BaseProtocol.java:667) > at org.apache.tomcat.util.net.PoolTcpEndpoint.processSocket(PoolTcpEndpoint.java:527) > at org.apache.tomcat.util.net.LeaderFollowerWorkerThread.runIt(LeaderFollowerWorkerThread.java:80) > at org.apache.tomcat.util.threads.ThreadPool$ControlRunnable.run(ThreadPool.java:684) > at java.lang.Thread.run(Thread.java:534) > 18:35:58,779 ERROR [Log] Error: PingServlet2MDBQueue.doGet(...):exception posting message to TradeBrokerQueue destination > 18:35:58,779 ERROR [Log] Error: PingServlet2MDBQueue.doGet(...): error > > java.lang.ArrayIndexOutOfBoundsException > java.lang.ArrayIndexOutOfBoundsException > at java.lang.System.arraycopy(Native Method) > at java.util.ArrayList.ensureCapacity(ArrayList.java:170) > at java.util.ArrayList.add(ArrayList.java:354) > at org.activemq.ra.JMSConnectionProxy.createSessionProxy(JMSConnectionProxy.java:121) > at org.activemq.ra.JMSConnectionProxy.createSession(JMSConnectionProxy.java:106) > at org.apache.geronimo.samples.daytrader.web.prims.PingServlet2MDBQueue.doGet(PingServlet2MDBQueue.java:117) > at javax.servlet.http.HttpServlet.service(HttpServlet.java:595) > at javax.servlet.http.HttpServlet.service(HttpServlet.java:688) > at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:252) > at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:173) > at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:213) > at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:178) > at org.apache.geronimo.tomcat.valve.DefaultSubjectValve.invoke(DefaultSubjectValve.java:46) > at org.apache.geronimo.tomcat.GeronimoStandardContext$SystemMethodValve.invoke(GeronimoStandardContext.java:342) > at org.apache.geronimo.tomcat.valve.GeronimoBeforeAfterValve.invoke(GeronimoBeforeAfterValve.java:31) > at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:126) > at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:105) > at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:107) > at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:148) > at org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:869) > at org.apache.coyote.http11.Http11BaseProtocol$Http11ConnectionHandler.processConnection(Http11BaseProtocol.java:667) > at org.apache.tomcat.util.net.PoolTcpEndpoint.processSocket(PoolTcpEndpoint.java:527) > at org.apache.tomcat.util.net.LeaderFollowerWorkerThread.runIt(LeaderFollowerWorkerThread.java:80) > at org.apache.tomcat.util.threads.ThreadPool$ControlRunnable.run(ThreadPool.java:684) > at java.lang.Thread.run(Thread.java:534) > java.lang.ArrayIndexOutOfBoundsException > at java.lang.System.arraycopy(Native Method) > at java.util.ArrayList.ensureCapacity(ArrayList.java:170) > at java.util.ArrayList.add(ArrayList.java:354) > at org.activemq.ra.JMSConnectionProxy.createSessionProxy(JMSConnectionProxy.java:121) > at org.activemq.ra.JMSConnectionProxy.createSession(JMSConnectionProxy.java:106) > at org.apache.geronimo.samples.daytrader.web.prims.PingServlet2MDBQueue.doGet(PingServlet2MDBQueue.java:117) > at javax.servlet.http.HttpServlet.service(HttpServlet.java:595) > at javax.servlet.http.HttpServlet.service(HttpServlet.java:688) > at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:252) > at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:173) > at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:213) > at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:178) > at org.apache.geronimo.tomcat.valve.DefaultSubjectValve.invoke(DefaultSubjectValve.java:46) > at org.apache.geronimo.tomcat.GeronimoStandardContext$SystemMethodValve.invoke(GeronimoStandardContext.java:342) > at org.apache.geronimo.tomcat.valve.GeronimoBeforeAfterValve.invoke(GeronimoBeforeAfterValve.java:31) > at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:126) > at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:105) > at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:107) > at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:148) > at org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:869) > at org.apache.coyote.http11.Http11BaseProtocol$Http11ConnectionHandler.processConnection(Http11BaseProtocol.java:667) > at org.apache.tomcat.util.net.PoolTcpEndpoint.processSocket(PoolTcpEndpoint.java:527) > at org.apache.tomcat.util.net.LeaderFollowerWorkerThread.runIt(LeaderFollowerWorkerThread.java:80) > at org.apache.tomcat.util.threads.ThreadPool$ControlRunnable.run(ThreadPool.java:684) > at java.lang.Thread.run(Thread.java:534) > java.lang.NullPointerException > at jsp.error_jsp._jspService(error_jsp.java:65) > at org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:97) > at javax.servlet.http.HttpServlet.service(HttpServlet.java:688) > at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:252) > at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:173) > at org.apache.catalina.core.ApplicationDispatcher.invoke(ApplicationDispatcher.java:672) > at org.apache.catalina.core.ApplicationDispatcher.processRequest(ApplicationDispatcher.java:465) > at org.apache.catalina.core.ApplicationDispatcher.doForward(ApplicationDispatcher.java:398) > at org.apache.catalina.core.ApplicationDispatcher.forward(ApplicationDispatcher.java:301) > at org.apache.catalina.core.StandardHostValve.custom(StandardHostValve.java:363) > at org.apache.catalina.core.StandardHostValve.status(StandardHostValve.java:284) > at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:136) > at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:105) > at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:107) > at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:148) > at org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:869) > at org.apache.coyote.http11.Http11BaseProtocol$Http11ConnectionHandler.processConnection(Http11BaseProtocol.java:667) > at org.apache.tomcat.util.net.PoolTcpEndpoint.processSocket(PoolTcpEndpoint.java:527) > at org.apache.tomcat.util.net.LeaderFollowerWorkerThread.runIt(LeaderFollowerWorkerThread.java:80) > at org.apache.tomcat.util.threads.ThreadPool$ControlRunnable.run(ThreadPool.java:684) > at java.lang.Thread.run(Thread.java:534) > 18:36:07,019 ERROR [Log] Error: PingServlet2MDBQueue.doGet(...):exception posting message to TradeBrokerQueue destination > 18:36:07,020 ERROR [Log] Error: PingServlet2MDBQueue.doGet(...): error > > java.util.ConcurrentModificationException > java.util.ConcurrentModificationException > at java.util.AbstractList$Itr.checkForComodification(AbstractList.java:448) > at java.util.AbstractList$Itr.next(AbstractList.java:419) > at java.util.AbstractCollection.remove(AbstractCollection.java:254) > at org.activemq.TransactionContext.removeSession(TransactionContext.java:116) > at org.activemq.ra.RATransactionContext.removeSession(RATransactionContext.java:57) > at org.activemq.ActiveMQSession.doClose(ActiveMQSession.java:466) > at org.activemq.ActiveMQSession.close(ActiveMQSession.java:447) > at org.activemq.ra.JMSSessionProxy.cleanup(JMSSessionProxy.java:87) > at org.activemq.ra.JMSSessionProxy.close(JMSSessionProxy.java:76) > at org.apache.geronimo.samples.daytrader.web.prims.PingServlet2MDBQueue.doGet(PingServlet2MDBQueue.java:127) > at javax.servlet.http.HttpServlet.service(HttpServlet.java:595) > at javax.servlet.http.HttpServlet.service(HttpServlet.java:688) > at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:252) > at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:173) > at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:213) > at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:178) > at org.apache.geronimo.tomcat.valve.DefaultSubjectValve.invoke(DefaultSubjectValve.java:46) > at org.apache.geronimo.tomcat.GeronimoStandardContext$SystemMethodValve.invoke(GeronimoStandardContext.java:342) > at org.apache.geronimo.tomcat.valve.GeronimoBeforeAfterValve.invoke(GeronimoBeforeAfterValve.java:31) > at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:126) > at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:105) > at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:107) > at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:148) > at org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:869) > at org.apache.coyote.http11.Http11BaseProtocol$Http11ConnectionHandler.processConnection(Http11BaseProtocol.java:667) > at org.apache.tomcat.util.net.PoolTcpEndpoint.processSocket(PoolTcpEndpoint.java:527) > at org.apache.tomcat.util.net.LeaderFollowerWorkerThread.runIt(LeaderFollowerWorkerThread.java:80) > at org.apache.tomcat.util.threads.ThreadPool$ControlRunnable.run(ThreadPool.java:684) > at java.lang.Thread.run(Thread.java:534) > java.util.ConcurrentModificationException > at java.util.AbstractList$Itr.checkForComodification(AbstractList.java:448) > at java.util.AbstractList$Itr.next(AbstractList.java:419) > at java.util.AbstractCollection.remove(AbstractCollection.java:254) > at org.activemq.TransactionContext.removeSession(TransactionContext.java:116) > at org.activemq.ra.RATransactionContext.removeSession(RATransactionContext.java:57) > at org.activemq.ActiveMQSession.doClose(ActiveMQSession.java:466) > at org.activemq.ActiveMQSession.close(ActiveMQSession.java:447) > at org.activemq.ra.JMSSessionProxy.cleanup(JMSSessionProxy.java:87) > at org.activemq.ra.JMSSessionProxy.close(JMSSessionProxy.java:76) > at org.apache.geronimo.samples.daytrader.web.prims.PingServlet2MDBQueue.doGet(PingServlet2MDBQueue.java:127) > at javax.servlet.http.HttpServlet.service(HttpServlet.java:595) > at javax.servlet.http.HttpServlet.service(HttpServlet.java:688) > at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:252) > at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:173) > at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:213) > at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:178) > at org.apache.geronimo.tomcat.valve.DefaultSubjectValve.invoke(DefaultSubjectValve.java:46) > at org.apache.geronimo.tomcat.GeronimoStandardContext$SystemMethodValve.invoke(GeronimoStandardContext.java:342) > at org.apache.geronimo.tomcat.valve.GeronimoBeforeAfterValve.invoke(GeronimoBeforeAfterValve.java:31) > at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:126) > at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:105) > at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:107) > at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:148) > at org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:869) > at org.apache.coyote.http11.Http11BaseProtocol$Http11ConnectionHandler.processConnection(Http11BaseProtocol.java:667) > at org.apache.tomcat.util.net.PoolTcpEndpoint.processSocket(PoolTcpEndpoint.java:527) > at org.apache.tomcat.util.net.LeaderFollowerWorkerThread.runIt(LeaderFollowerWorkerThread.java:80) > at org.apache.tomcat.util.threads.ThreadPool$ControlRunnable.run(ThreadPool.java:684) > at java.lang.Thread.run(Thread.java:534) > java.lang.NullPointerException > at jsp.error_jsp._jspService(error_jsp.java:65) > at org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:97) > at javax.servlet.http.HttpServlet.service(HttpServlet.java:688) > at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:252) > at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:173) > at org.apache.catalina.core.ApplicationDispatcher.invoke(ApplicationDispatcher.java:672) > at org.apache.catalina.core.ApplicationDispatcher.processRequest(ApplicationDispatcher.java:465) > at org.apache.catalina.core.ApplicationDispatcher.doForward(ApplicationDispatcher.java:398) > at org.apache.catalina.core.ApplicationDispatcher.forward(ApplicationDispatcher.java:301) > at org.apache.catalina.core.StandardHostValve.custom(StandardHostValve.java:363) > at org.apache.catalina.core.StandardHostValve.status(StandardHostValve.java:284) > at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:136) > at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:105) > at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:107) > at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:148) > at org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:869) > at org.apache.coyote.http11.Http11BaseProtocol$Http11ConnectionHandler.processConnection(Http11BaseProtocol.java:667) > at org.apache.tomcat.util.net.PoolTcpEndpoint.processSocket(PoolTcpEndpoint.java:527) > at org.apache.tomcat.util.net.LeaderFollowerWorkerThread.runIt(LeaderFollowerWorkerThread.java:80) > at org.apache.tomcat.util.threads.ThreadPool$ControlRunnable.run(ThreadPool.java:684) > at java.lang.Thread.run(Thread.java:534) > 18:36:09,680 ERROR [Log] Error: PingServlet2MDBQueue.doGet(...):exception posting message to TradeBrokerQueue destination > 18:36:09,680 ERROR [Log] Error: PingServlet2MDBQueue.doGet(...): error > > java.util.ConcurrentModificationException > java.util.ConcurrentModificationException > at java.util.AbstractList$Itr.checkForComodification(AbstractList.java:448) > at java.util.AbstractList$Itr.next(AbstractList.java:419) > at java.util.AbstractCollection.remove(AbstractCollection.java:254) > at org.activemq.TransactionContext.removeSession(TransactionContext.java:116) > at org.activemq.ra.RATransactionContext.removeSession(RATransactionContext.java:57) > at org.activemq.ActiveMQSession.doClose(ActiveMQSession.java:466) > at org.activemq.ActiveMQSession.close(ActiveMQSession.java:447) > at org.activemq.ra.JMSSessionProxy.cleanup(JMSSessionProxy.java:87) > at org.activemq.ra.JMSSessionProxy.close(JMSSessionProxy.java:76) > at org.apache.geronimo.samples.daytrader.web.prims.PingServlet2MDBQueue.doGet(PingServlet2MDBQueue.java:127) > at javax.servlet.http.HttpServlet.service(HttpServlet.java:595) > at javax.servlet.http.HttpServlet.service(HttpServlet.java:688) > at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:252) > at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:173) > at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:213) > at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:178) > at org.apache.geronimo.tomcat.valve.DefaultSubjectValve.invoke(DefaultSubjectValve.java:46) > at org.apache.geronimo.tomcat.GeronimoStandardContext$SystemMethodValve.invoke(GeronimoStandardContext.java:342) > at org.apache.geronimo.tomcat.valve.GeronimoBeforeAfterValve.invoke(GeronimoBeforeAfterValve.java:31) > at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:126) > at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:105) > at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:107) > at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:148) > at org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:869) > at org.apache.coyote.http11.Http11BaseProtocol$Http11ConnectionHandler.processConnection(Http11BaseProtocol.java:667) > at org.apache.tomcat.util.net.PoolTcpEndpoint.processSocket(PoolTcpEndpoint.java:527) > at org.apache.tomcat.util.net.LeaderFollowerWorkerThread.runIt(LeaderFollowerWorkerThread.java:80) > at org.apache.tomcat.util.threads.ThreadPool$ControlRunnable.run(ThreadPool.java:684) > at java.lang.Thread.run(Thread.java:534) > java.util.ConcurrentModificationException > at java.util.AbstractList$Itr.checkForComodification(AbstractList.java:448) > at java.util.AbstractList$Itr.next(AbstractList.java:419) > at java.util.AbstractCollection.remove(AbstractCollection.java:254) > at org.activemq.TransactionContext.removeSession(TransactionContext.java:116) > at org.activemq.ra.RATransactionContext.removeSession(RATransactionContext.java:57) > at org.activemq.ActiveMQSession.doClose(ActiveMQSession.java:466) > at org.activemq.ActiveMQSession.close(ActiveMQSession.java:447) > at org.activemq.ra.JMSSessionProxy.cleanup(JMSSessionProxy.java:87) > at org.activemq.ra.JMSSessionProxy.close(JMSSessionProxy.java:76) > at org.apache.geronimo.samples.daytrader.web.prims.PingServlet2MDBQueue.doGet(PingServlet2MDBQueue.java:127) > at javax.servlet.http.HttpServlet.service(HttpServlet.java:595) > at javax.servlet.http.HttpServlet.service(HttpServlet.java:688) > at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:252) > at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:173) > at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:213) > at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:178) > at org.apache.geronimo.tomcat.valve.DefaultSubjectValve.invoke(DefaultSubjectValve.java:46) > at org.apache.geronimo.tomcat.GeronimoStandardContext$SystemMethodValve.invoke(GeronimoStandardContext.java:342) > at org.apache.geronimo.tomcat.valve.GeronimoBeforeAfterValve.invoke(GeronimoBeforeAfterValve.java:31) > at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:126) > at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:105) > at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:107) > at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:148) > at org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:869) > at org.apache.coyote.http11.Http11BaseProtocol$Http11ConnectionHandler.processConnection(Http11BaseProtocol.java:667) > at org.apache.tomcat.util.net.PoolTcpEndpoint.processSocket(PoolTcpEndpoint.java:527) > at org.apache.tomcat.util.net.LeaderFollowerWorkerThread.runIt(LeaderFollowerWorkerThread.java:80) > at org.apache.tomcat.util.threads.ThreadPool$ControlRunnable.run(ThreadPool.java:684) > at java.lang.Thread.run(Thread.java:534) > java.lang.NullPointerException > at jsp.error_jsp._jspService(error_jsp.java:65) > at org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:97) > at javax.servlet.http.HttpServlet.service(HttpServlet.java:688) > at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:252) > at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:173) > at org.apache.catalina.core.ApplicationDispatcher.invoke(ApplicationDispatcher.java:672) > at org.apache.catalina.core.ApplicationDispatcher.processRequest(ApplicationDispatcher.java:465) > at org.apache.catalina.core.ApplicationDispatcher.doForward(ApplicationDispatcher.java:398) > at org.apache.catalina.core.ApplicationDispatcher.forward(ApplicationDispatcher.java:301) > at org.apache.catalina.core.StandardHostValve.custom(StandardHostValve.java:363) > at org.apache.catalina.core.StandardHostValve.status(StandardHostValve.java:284) > at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:136) > at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:105) > at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:107) > at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:148) > at org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:869) > at org.apache.coyote.http11.Http11BaseProtocol$Http11ConnectionHandler.processConnection(Http11BaseProtocol.java:667) > at org.apache.tomcat.util.net.PoolTcpEndpoint.processSocket(PoolTcpEndpoint.java:527) > at org.apache.tomcat.util.net.LeaderFollowerWorkerThread.runIt(LeaderFollowerWorkerThread.java:80) > at org.apache.tomcat.util.threads.ThreadPool$ControlRunnable.run(ThreadPool.java:684) > at java.lang.Thread.run(Thread.java:534) -- This message is automatically generated by JIRA. - If you think it was sent incorrectly contact one of the administrators: http://issues.apache.org/jira/secure/Administrators.jspa - For more information on JIRA, see: http://www.atlassian.com/software/jira