[ https://issues.jboss.org/browse/JGRP-2161?page=com.atlassian.jira.plugin.... ] Bela Ban commented on JGRP-2161: -------------------------------- git bisect shows the offending commit to be {{509cfe}}; this is where {{message_processing_policy}} in the transport was set to "max" (from "submit") as default. Changing this back to "max" fixes the issue. The problem is that {{MaxOneThreadPerSender}} creates message batches for each sender's address in its table and uses the batches to queue messages when a message for a given sender is already being processed. However, the dest and sender's address of those batches is not changed on a disconnect-connect sequence, which results in messages being sent to old UUIDs, which are discarded by the transport logic when comparing the destination address of a batch with the local address. A simple solution is to remove entries from that table on a disconnect and on a view change (remove entries for left members). -- This message was sent by Atlassian JIRA (v7.2.3#72005)