what version of Tomcat, and we will get it fixed On 08/25/2009 12:22 AM, CS Wong wrote:
Periodically, I'm getting problems with my Tomcat 6 cluster (2 nodes). One of the nodes would just go haywire and generate a ton of logs repeating the following:Aug 25, 2009 11:44:10 AM org.apache.catalina.ha.session.DeltaRequest reset SEVERE: Unable to remove element java.util.NoSuchElementException at java.util.LinkedList.remove(LinkedList.java:788) at java.util.LinkedList.removeFirst(LinkedList.java:134) at org.apache.catalina.ha.session.DeltaRequest.reset(DeltaRequest.java:201) at org.apache.catalina.ha.session.DeltaRequest.execute(DeltaRequest.java:195) at org.apache.catalina.ha.session.DeltaManager.handleSESSION_DELTA(DeltaManager.java:1364) at org.apache.catalina.ha.session.DeltaManager.messageReceived(DeltaManager.java:1320) at org.apache.catalina.ha.session.DeltaManager.messageDataReceived(DeltaManager.java:1083) at org.apache.catalina.ha.session.ClusterSessionListener.messageReceived(ClusterSessionListener.java:87) at org.apache.catalina.ha.tcp.SimpleTcpCluster.messageReceived(SimpleTcpCluster.java:916) at org.apache.catalina.ha.tcp.SimpleTcpCluster.messageReceived(SimpleTcpCluster.java:897) at org.apache.catalina.tribes.group.GroupChannel.messageReceived(GroupChannel.java:264) at org.apache.catalina.tribes.group.ChannelInterceptorBase.messageReceived(ChannelInterceptorBase.java:79) at org.apache.catalina.tribes.group.interceptors.TcpFailureDetector.messageReceived(TcpFailureDetector.java:110) at org.apache.catalina.tribes.group.ChannelInterceptorBase.messageReceived(ChannelInterceptorBase.java:79) at org.apache.catalina.tribes.group.ChannelInterceptorBase.messageReceived(ChannelInterceptorBase.java:79) at org.apache.catalina.tribes.group.ChannelInterceptorBase.messageReceived(ChannelInterceptorBase.java:79) at org.apache.catalina.tribes.group.ChannelCoordinator.messageReceived(ChannelCoordinator.java:241) at org.apache.catalina.tribes.transport.ReceiverBase.messageDataReceived(ReceiverBase.java:225) at org.apache.catalina.tribes.transport.nio.NioReplicationTask.drainChannel(NioReplicationTask.java:188) at org.apache.catalina.tribes.transport.nio.NioReplicationTask.run(NioReplicationTask.java:91) at java.util.concurrent.ThreadPoolExecutor$Worker.runTask(ThreadPoolExecutor.java:885) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:907) at java.lang.Thread.run(Thread.java:619) That's the only thing that it shows. The other node in the cluster is still active at this time. There's nothing to do but to restart. The large amount of logs has caused disk space issues more than a couple of times too. Does anybody have any idea what's wrong here? Thanks! Wong
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