Caused by: java.net.UnknownHostException: zk01t 
        at java.net.Inet6AddressImpl.lookupAllHostAddr(Native Method) 
        at java.net.InetAddresslookupAllHostAddr(InetAddress.java:850) 
        at
java.net.InetAddress.getAddressFromNameService(InetAddress.java:1201) 
        at java.net.InetAddress.getAllByName0(InetAddress.java:1154) 
        at java.net.InetAddress.getAllByName(InetAddress.java:1084) 
        at java.net.InetAddress.getAllByName(InetAddress.java:1020) 
        at org.apache.zookeeper.ClientCnxn.<init>(ClientCnxn.java:386) 
        at org.apache.zookeeper.ClientCnxn.<init>(ClientCnxn.java:331) 
        at org.apache.zookeeper.ZooKeeper.<init>(ZooKeeper.java:377) 
        at org.I0Itec.zkclient.ZkConnection.connect(ZkConnection.java:61) 


  check the zk01t  host is normal ,you can ping zk01t for test

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