I'm thinking about how to fix this racing condition: I - ClientClusteredConnectionFactoryDelegate has this following failoverMap: Server 1->Server2->Server3->Server 1 II - Server1 is killed III - Now the CF::failoverMap is updated to: Server2->Server3->Server2 IV - A failure happens on a connection directed on Server1. FailoverMap doesn't have the information about Server1 any more. I will keep coding and maybe we will need to have the failoverMap on the Connection instead of ConnectionFactory, and having failover updating these fields on Connection only when a failure happens. As I said I am thinking about how to fix this, and I'm almost sure how to fix this. I wanted to post this just to keep the team informed. View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=4001983#... Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&a...