Steps to reproduce the issue. [1] Add 1000 messages on master1 and master2 using the below command:- ./artemis producer --message-count 1000 --destination helloworld [2] Start the consumer application. [3] The consumer application will connect to master1 and all messages of master2 will get redistributed to master1. [4] Stop the master1 all messages will transfer to slave1 but you will notice the consumer will failover to master2. [5] So, After a sec all messages will be transferred from slave1 to master2. [6] Check the queue stat (./artemis queue stat), then it is observed that the message_added count is more than messages published on both brokers.