this(conf.getConfigMasterGossipHostsList(),
conf.getMasterGossipPort());
}
GossipedMasterAckManager(List<Pair<String,Integer>> peers, int port) {
group = new Group();
for (Pair<String,Integer> p : peers) {
group.addNode(new TCPNodeId(p.getLeft(),p.getRight()));
}
this.port = port;
// TODO(henry) choose the interface from config