assertTrue((cluster2.killCurrentActiveZooKeeperServer() >= defaultClientPort));
assertEquals(2, cluster2.getBackupZooKeeperServerNum());
assertEquals(3, cluster2.getZooKeeperServerNum());
// killing the backup zk servers
cluster2.killOneBackupZooKeeperServer();
cluster2.killOneBackupZooKeeperServer();
assertEquals(0, cluster2.getBackupZooKeeperServerNum());
assertEquals(1, cluster2.getZooKeeperServerNum());
// killing the last zk server