[jboss-jira] [JBoss JIRA] (WFLY-1861) Web sessions from a old members will stay in memory even after expiration if never accessed

[Paul Ferraro (JIRA)]

Paul Ferraro created WFLY-1861:
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             Summary: Web sessions from a old members will stay in memory even after expiration if never accessed
                 Key: WFLY-1861
                 URL: https://issues.jboss.org/browse/WFLY-1861
             Project: WildFly
          Issue Type: Bug
          Components: Clustering
    Affects Versions: 8.0.0.Alpha3
            Reporter: Paul Ferraro
            Assignee: Paul Ferraro
             Fix For: 8.0.0.Alpha4


In the new web session clustering implementation, expiration and passivation are handled locally by the owning node.  If a node leaves, the sessions previously handled by the left node will be rescheduled for passivation/expiration by whichever node next handles that session.  However, any sessions previously handled by the left node that are never accessed again (i.e. zombie sessions) will stay in memory on the remote nodes, since no node ever schedules them for passivation/expiration.  The number of session zombies will continue to grow like a malignant cancer as the cluster membership changes, filling the available memory until there is nothing left to consume...

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