}
public ZooKeeper initZK() throws Exception{
ZooKeeper zk = new ZooKeeper(TestConf.host, Constants.SESSION_TIMEOUT, null);
List<ACL> acls = new ArrayList<ACL>();
acls.add(new ACL(Perms.ALL, Ids.ANYONE_ID_UNSAFE));
zk.create("/iserviceTest", "root".getBytes(), acls, CreateMode.PERSISTENT);
zk.create("/iserviceTest/node1", "node1".getBytes(), acls, CreateMode.PERSISTENT);
zk.create("/iserviceTest/node2", "node2".getBytes(), acls, CreateMode.PERSISTENT);
zk.create("/iserviceTest/node1/node3", "node3".getBytes(), acls, CreateMode.PERSISTENT);
zk.create("/iserviceTest/node1/node4", "node4".getBytes(), acls, CreateMode.PERSISTENT);