MDBs are slowly dying in JBoss EAP

Issue

Over the past five days we have a situation where all available MDBs for a queue are slowly dying off until there are zero MDBs left consuming messages. We do not use remote queues and are only using the in-vm queues. We have made no changes to our queues nor to the MDBs that are consuming the messages. Upon a server restart the messages are handled normally, but eventually all MDBs eventually die again.

I see the following in our logs:

10:44:33,168 WARN  [org.hornetq.core.server.impl.ServerSessionImpl] (hornetq-failure-check-thread) Client connection failed, clearing up resources for session 73d59519-0ff8-11e3-8db9-e3bd47286971
10:44:33,169 WARN  [org.hornetq.core.server.impl.ServerSessionImpl] (hornetq-failure-check-thread) Cleared up resources for session 73d59519-0ff8-11e3-8db9-e3bd47286971
10:44:33,169 WARN  [org.hornetq.core.protocol.core.impl.RemotingConnectionImpl] (hornetq-failure-check-thread) Connection failure has been detected: Did not receive data from invm:0. It is likely the client has exited or crashed without closing its connection, or the network between the server and client has failed. You also might have configured connection-ttl and client-failure-check-period incorrectly. Please check user manual for more information. The connection will now be closed. [code=3]