I use tomcat 5.0.27 at SLES 8.1 Tomcat instances installed to two host and join to cluster.
Session replication good working after server startup, but after 2 - 3 days I get problem with tomcat.
In catalina.out have following lines: --------------------------------------- Nov 30, 2004 6:34:59 PM org.apache.catalina.cluster.tcp.SimpleTcpCluster memberAdded INFO: Replication member added:org.apache.catalina.cluster.mcast.McastMember[tcp://192.168.1.2:4001,192. 168.1.2,4001, alive=628535] Nov 30, 2004 6:35:11 PM org.apache.catalina.cluster.tcp.SimpleTcpCluster memberDisappeared INFO: Received member disappeared:org.apache.catalina.cluster.mcast.McastMember[tcp://192.168.1.2:4001,1 92.168.1.2,4001, alive=637441] ---------------------------------------------------------------------
These lines writeing into endless loop and second server will be crash via some time.
In catalina.out write following lines:
----------------------
Nov 30, 2004 3:32:20 PM org.apache.catalina.cluster.tcp.ReplicationValve invoke
SEVERE: Unable to perform replication request.
java.lang.NullPointerException
at
org.apache.catalina.cluster.session.DeltaRequest.writeExternal(DeltaRequest.java:217)
at
org.apache.catalina.cluster.session.DeltaManager.unloadDeltaRequest(DeltaManager.java:393)
at
org.apache.catalina.cluster.session.DeltaManager.requestCompleted(DeltaManager.java:782)
at
org.apache.catalina.cluster.tcp.ReplicationValve.invoke(ReplicationValve.java:203)
at
org.apache.catalina.core.StandardValveContext.invokeNext(StandardValveContext.java:102)
. . .--------------------------------------
or following:
--------------------------------------
Nov 30, 2004 2:33:04 PM org.apache.catalina.cluster.tcp.ReplicationValve invoke
SEVERE: Unable to perform replication request.
java.util.NoSuchElementException
at java.util.LinkedList.remove(LinkedList.java:579)
at java.util.LinkedList.removeFirst(LinkedList.java:131)
at org.apache.catalina.cluster.session.DeltaRequest.reset(DeltaRequest.java:153)
at org.apache.catalina.cluster.session.DeltaSession.resetDeltaRequest(DeltaSession.java:938)
at org.apache.catalina.cluster.session.DeltaManager.requestCompleted(DeltaManager.java:786)
at org.apache.catalina.cluster.tcp.ReplicationValve.invoke(ReplicationValve.java:203)
. . . --------------------------------------------------------------------------
What is may fix it problem?
Thanks.
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