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http://issues.apache.org/bugzilla/show_bug.cgi?id=44245 Summary: ConcurrentModificationException in tomcat 5.5 cluster Product: Tomcat 5 Version: 5.5.25 Platform: Other OS/Version: other Status: NEW Severity: normal Priority: P1 Component: Catalina:Cluster AssignedTo: [EMAIL PROTECTED] ReportedBy: [EMAIL PROTECTED] CC: [EMAIL PROTECTED] Env: Tomcat Version 5.5.25 Platform OS Linux xxx 2.6.9-67.ELsmp #1 SMP Wed Nov 7 13:56:44 EST 2007 x86_64 x86_64 x86_64 GNU/Linux JVM : java version "1.5.0_12" Java(TM) 2 Runtime Environment, Standard Edition (build 1.5.0_12-b04) BEA JRockit(R) (build R27.4.0-90-89592-1.5.0_12-20070928-1715-linux-x86_64, compiled mode) Web Server Apache 2.0.59 and mod_jk-1.2.25 Apache jk/worker conf: ---------------------- worker.list=balancer worker.balancer.type=lb worker.balancer.balance_workers=asur,asmar worker.balancer.sticky_session=1 worker.asur.host=xxxxxxxxx worker.asur.port=8009 worker.asur.type=ajp13 worker.asur.lbfactor=1 worker.asur.activation=disabled worker.asmar.host=xxxxxxx worker.asmar.port=8009 worker.asmar.type=ajp13 worker.asmar.lbfactor=1 worker.asmar.redirect=asur Cluster configuration: ---------------------- <Cluster className="org.apache.catalina.cluster.tcp.SimpleTcpCluster" doClusterLog="true" clusterLogName="clusterlog" managerClassName="org.apache.catalina.cluster.session.SimpleTcpReplicationManager" expireSessionsOnShutdown="false" replicationMode="pooled" notifyListenersOnReplication="true"> <Membership className="org.apache.catalina.cluster.mcast.McastService" mcastAddr="228.0.0.4" mcastPort="45564" mcastFrequency="500" mcastDropTime="3000"/> <Receiver className="org.apache.catalina.cluster.tcp.ReplicationListener" tcpListenAddress="xxxxxx" tcpListenPort="4001" tcpSelectorTimeout="100" tcpThreadCount="6"/> <Sender className="org.apache.catalina.cluster.tcp.ReplicationTransmitter" replicationMode="pooled" ackTimeout="15000" waitForAck="true"/> <Valve className="org.apache.catalina.cluster.tcp.ReplicationValve" filter=".*\.gif;.*\.js;.*\.jpg;.*\.png;.*\.htm;.*\.html;.*\.css;.*\.txt;"/> <Deployer className="org.apache.catalina.cluster.deploy.FarmWarDeployer" tempDir="/tmp/war-temp/" deployDir="/tmp/war-deploy/" watchDir="/tmp/war-listen/" watchEnabled="false"/> <ClusterListener className="org.apache.catalina.cluster.session.ClusterSessionListener"/> </Cluster> Problem: -------- Tomcat server logs this exception. Could you explain us what's hapenning. Thanks. SEVERE: Failed to serialize the session! java.util.ConcurrentModificationException at org.apache.commons.collections.SequencedHashMap$OrderedIterator.next(SequencedHashMap.java:757) at org.apache.commons.collections.LRUMap.writeExternal(LRUMap.java:174) at java.io.ObjectOutputStream.writeExternalData(ObjectOutputStream.java:1310) at java.io.ObjectOutputStream.writeOrdinaryObject(ObjectOutputStream.java:1288) at java.io.ObjectOutputStream.writeObject0(ObjectOutputStream.java:1079) at java.io.ObjectOutputStream.writeObject(ObjectOutputStream.java:302) at org.apache.catalina.session.StandardSession.writeObject(StandardSession.java:1478) at org.apache.catalina.session.StandardSession.writeObjectData(StandardSession.java:948) at org.apache.catalina.cluster.session.ReplicatedSession.writeObjectData(ReplicatedSession.java:189) at org.apache.catalina.cluster.session.SimpleTcpReplicationManager.writeSession(SimpleTcpReplicationM anager.java:353) at org.apache.catalina.cluster.session.SimpleTcpReplicationManager.requestCompleted(SimpleTcpReplicat ionManager.java:317) at org.apache.catalina.cluster.tcp.ReplicationValve.send(ReplicationValve.java:549) at org.apache.catalina.cluster.tcp.ReplicationValve.sendMessage(ReplicationValve.java:536) at org.apache.catalina.cluster.tcp.ReplicationValve.sendSessionReplicationMessage(ReplicationValve.ja va:518) at org.apache.catalina.cluster.tcp.ReplicationValve.sendReplicationMessage(ReplicationValve.java:428) at org.apache.catalina.cluster.tcp.ReplicationValve.invoke(ReplicationValve.java:362) at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:117) at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:108) at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:151) at org.apache.jk.server.JkCoyoteHandler.invoke(JkCoyoteHandler.java:200) at org.apache.jk.common.HandlerRequest.invoke(HandlerRequest.java:283) at org.apache.jk.common.ChannelSocket.invoke(ChannelSocket.java:773) at org.apache.jk.common.ChannelSocket.processConnection(ChannelSocket.java:703) at org.apache.jk.common.ChannelSocket$SocketConnection.runIt(ChannelSocket.java:895) at org.apache.tomcat.util.threads.ThreadPool$ControlRunnable.run(ThreadPool.java:689) at java.lang.Thread.run(Thread.java:595) -- Configure bugmail: http://issues.apache.org/bugzilla/userprefs.cgi?tab=email ------- You are receiving this mail because: ------- You are the assignee for the bug, or are watching the assignee. --------------------------------------------------------------------- To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
