ms1.stop("stopping first server");
// Use a listener to capture when the node is actually deleted
NodeDeletionListener listener = new NodeDeletionListener(zk,
zk.getMasterAddressZNode());
zk.registerListener(listener);
LOG.info("Deleting master node");
ZKUtil.deleteNode(zk, zk.getMasterAddressZNode());
// Wait for the node to be deleted