Hi, I had the same issue with 2 ActiveMq 5.10 nodes and 3 ZooKeeper nodes.
At first everything worked well but after long running stress tests we had the same situation were the master would step down and no node would become the new master. This would break our application and we were glad not to be using this in production. After this we moved to using RabbitMq and have had no problems with that solution. Thanks, Justin -- View this message in context: http://activemq.2283324.n4.nabble.com/ActiveMQ-Master-Slave-with-ZooKeeper-Session-Expiration-tp4686562p4687808.html Sent from the ActiveMQ - User mailing list archive at Nabble.com.