Extremely slow response times in Remote EJB invocation on cluster membership change

In failover scenarios [1], the response times of remote EJB client are sometimes extremely large.

On graceful shutdown, response times reach up to one minute [2]. Graceful failover is a positive test, no such exceptions are anticipated.

On server crash in a cluster, RTs reach up to 1 minute as well [3].

[1] https://docspace.corp.redhat.com/docs/DOC-92019#Failover_Tests

[2] http://hudson.qa.jboss.com/hudson/view/EAP6/view/EAP6-Failover/job/eap-6x-failover-ejb-ejbremote-shutdown-repl-async/22/artifact/report/failover.txt

[3] http://hudson.qa.jboss.com/hudson/view/EAP6/view/EAP6-Failover/job/eap-6x-failover-ejb-ejbremote-jvmkill-repl-sync/8/artifact/report/failover.txt