question: private void createBaseNode ( ) throws KeeperException , InterruptedException { if ( null == zk . exists ( zooKeeperLocation , true ) ) { zk . create ( zooKeeperLocation , new byte [ 1 ] , Ids . OPEN_ACL_UNSAFE , CreateMode . PERSISTENT ) ; } }
target:  Creating a znode in which all the znodes (lock files )are maintained.