Hi,
I'm seeing similar issue.
"[EMAIL PROTECTED]" wrote :
| Everyone else -- is anyone seeing this problem with sticky sessions enabled
and working properly? You have to use sticky sessions.
Why does sticky session need to enabled? We have sticky session false and want
to replicate the session.
We see this error when we repeatedly log in and out using the same browser.
I did printDetail on JMS console TomcatClusteringCache
When I log in, I see the following in both nodes.
/JSESSION
|
| /localhost
|
| /myapp
|
| /s6YGpkbACWfDPVre4sMcqQ**
| VERSION: 3
| s6YGpkbACWfDPVre4sMcqQ**: [EMAIL PROTECTED]
After logging out, I see the same in both nodes, except that the VERSION is
bumped up to 4.
I tried logging in and out repeatedly, until I run into the error.
ERROR [org.jboss.web.tomcat.tc5.session.JBossCacheService]
externalizeSession(): exception occurred externalizing session
SessionBasedClusteredSession[id: s6YGpkbACWfDPVre4sMcqQ**.worker1
lastAccessedTime: 1184115870097 version: 13 lastOutdated: 0]
| java.lang.NullPointerException
| at
org.springframework.webflow.execution.FlowSessionImpl.writeObject(FlowSessionImpl.java:156)
| at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
| at
sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
| at
sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
| at java.lang.reflect.Method.invoke(Method.java:585)
| ...
Followed by
WARN [org.jboss.web.tomcat.tc5.session.CacheListener] Possible concurrency
problem: Replicated version id 13 matches in-memory version for session
s6YGpkbACWfDPVre4sMcqQ**
Here is tc5-cluster jboss-service.xml settings
| <attribute
name="ClusterName">Tomcat-${jboss.partition.name:Cluster}</attribute>
| <attribute name="IsolationLevel">REPEATABLE_READ</attribute>
| <attribute name="CacheMode">REPL_ASYNC</attribute>
|
Any idea?
Thanks in advance,
Jennifer
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