// Adding a slave should allow the master startup to complete.
SlaveLevelDBStore slave = createSlave(master, slaveDir);
slave.start();
assertTrue(masterStartLatch.await(2, TimeUnit.SECONDS));
// New updates should complete quickly now..
MessageStore ms = master.createQueueMessageStore(new ActiveMQQueue("TEST"));
CountDownFuture f = asyncAddMessage(ms, "m1");
assertTrue(f.await(1, TimeUnit.SECONDS));