public int getClientPort() {
    return activeZKServerIndex < 0 || activeZKServerIndex >= clientPortList.size() ? -1 : clientPortList.get(activeZKServerIndex);
  }
Kill one back up ZK servers
@throws IOException
@throws InterruptedException
ql/src/test/org/apache/hive/testutils/MiniZooKeeperCluster.java