The STOMP unit test uses two connections (in separate threads). The first subscribes a topic destination using client ack. The second sends 10000 messages. The first thread then receives and acknowledges the messages.
The test is configured with auto-fail time-out after 10 seconds.
The log shows that the broker does not consume the ACK frame for message 4777. The test times out on the line
2014-03-22 09:28:10,000 [Test Worker 1 ] - INFO StompLoadTestWithAck - Will send message ACK: 4777
2014-03-22 09:28:16,328 [main ] - INFO AutoFailTestSupport - Stopping auto fail thread...