A bit of more information. The session bean is implemented using com.sun.rave.web.ui.appbase.AbstractSessionBean
I haven't found any relationship between that class and incompatibilities with Tomcat and/or the DeltaManager. I'm puzzled On Fri, 2008-12-12 at 13:24 +0100, Pieter Temmerman wrote: > Hello everybody, > > First of all, to avoid any misunderstandings, below problems relate to > applications that I did not write, neither do I exactly know the > implementation of them. Although, if required, I can ask the programmer > for more information. > > That being said, the problem that I am seeing is that the application > that I deployed on a Tomcat 5.5.27 cluster is not correctly handling > session replication. (The application works perfectly on a single > server). > > The reason for thinking this is that the application fails, but only at > irregular intervals. When I press F5, then the page eventually comes > true. As said before, this does not happen in a single server > environment. According to the Tomcat logs, I can see that my request is > being served by Tomcat1 and by Tomcat2, and vice versa. > > My server.xml configuration: > > <Cluster className="org.apache.catalina.cluster.tcp.SimpleTcpCluster" > > managerClassName="org.apache.catalina.cluster.session.DeltaManager" > expireSessionsOnShutdown="false" > useDirtyFlag="true" > notifyListenersOnReplication="true" > clusterLog="true" > clusterLogName="clusterlog"> > <Membership > > className="org.apache.catalina.cluster.mcast.McastService" > mcastAddr="228.0.0.6" > mcastPort="45566" > mcastFrequency="500" > mcastDropTime="3000"/> > <Receiver > > className="org.apache.catalina.cluster.tcp.ReplicationListener" > tcpListenAddress="172.18.0.39" > tcpListenPort="4001" > tcpSelectorTimeout="100" > tcpThreadCount="25"/> > <Sender > > className="org.apache.catalina.cluster.tcp.ReplicationTransmitter" > replicationMode="pooled" > ackTimeout="15000" > keepAliveTimeout="20000" > 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> > > > Something interesting that I figured out is that if I change the > managerClass from > managerClassName="org.apache.catalina.cluster.session.DeltaManager" > to > managerClassName="org.apache.catalina.cluster.session.SimpleTcpReplicationManager" > > then the application works fine. (It keeps working when I set > useDirtyFlag to false). > > One would think that the DeltaManager is just not replicating, but I can > see the following messages in catalina.out: > > catalina.out:INFO: Manager[/Application1], requesting session state from > org.apache.catalina.cluster.mcast.McastMember[tcp://172.18.0.40:4001,catalina,172.18.0.40,4001, > alive=73627]. This operation will timeout if no session state has been > received within 60 seconds > catalina.out:INFO: Manager[/Application1], session state received in 104 > ms. > > Currently the only information that I have about the application is that > it's using JSF and session beans. > The developer said he does not need to explicitly put > session.SetAttribute(whatever), since this is automatically taken care > of by the session bean object. I'm not a Java programmer, so I'm not > sure whether that is correct. > > I would really appreciate if someone could point me into the right > direction. > > Btw. I cannot change the managerclass to SimpleTcpReplicationManager, as > I got other applications on the same server that start failing if that > manager is used. > > --------------------------------------------------------------------- > To unsubscribe, e-mail: users-unsubscr...@tomcat.apache.org > For additional commands, e-mail: users-h...@tomcat.apache.org > > --------------------------------------------------------------------- To unsubscribe, e-mail: users-unsubscr...@tomcat.apache.org For additional commands, e-mail: users-h...@tomcat.apache.org
