Just removing the Thread that's not being used any longer
I - LargeMessageCompressedTest: Instead of copy&pasting the LargeMessageTest.. it should be an extension. Just extend the original class, and change the createSessionFActory (or createConnector at the new method). Use some hook.. anything instead of copy & paste.
II - I'm removing the thread pool method from the factory at your branch. You should make sure you don't commit any Thread related method at the factories.
III - I need a little explanation why the method that inflates is called deflater and the deflater is called inflater (on the JDK :-) )...
But everything looks great. I'm glad we have you helping us now :-)