When the GSSAPI security context expires on a running connection (i.e. when Kerberos ticket expires), communication to the broker on that connection becomes impossible. To avoid this there would need to be a new sasl exchange introduced to renegotiate a new key before the old one expires. (This is an isue for the AMQP protocol in general).
This product has been discontinued or is no longer tracked in Red Hat Bugzilla.