mod_cluster balancer potentially breaks stickiness for all nodes if one node has sticky sessions disabled

Solution Unverified - Updated -

Issue

  • We configure some nodes in our mod_cluster balancer to use stickiness and some not to use stickiness. Stickiness works fine as long as the nodes with stickiness disabled are not running. Once a node starts with stickiness disabled and joins the balancer, stickiness then breaks for all nodes (even those with stickiness enabled).

Environment

  • JBoss Enterprise Application Platform (EAP)
  • JBoss Enterprise Web Server (JWS)
  • JBoss Core Services (JBCS)
  • Apache httpd
  • mod_cluster

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