WARN "Possible concurrency problem: Replicated version id XX .... in-memory version for session" in JBoss EAP Cluster

Solution Verified - Updated -

Issue

We got similar WARN log message in server.log:

  • EAP 4.x/5.x:

    Possible concurrency problem: Replicated version id 123 matches in-memory version for session ABCDEFGHIJKLMNOPQRSTUV**

    WARN  [org.jboss.web.tomcat.service.session.distributedcache.impl.jbc.CacheListener] (Incoming-191.168.100.100:55200) Possible concurrency problem: Replicated version id XXX is less than or equal to in-memory version for session ABCDEFGHIJKLMNOPQRSTUV__

  • EAP 6.x:

    JBAS010325: Possible concurrency problem: Replicated version id 123 is less than or equal to in-memory version for session ABCDEFGHIJKLMNOPQRSTUV**

Environment

  • Red Hat JBoss Enterprise Application Platform
    • 4
    • 5
    • 6

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