我启用了kerberos来保护hadoop，并为主体生成了密钥选项卡test@example.com 并在执行kinit-k-t test.keytab时使用hbase shell-grant命令提供测试用户rx（read-execute）权限test@example.com
一切正常，我正在尝试做同样的事情，比如使用下面的代码通过java代码/java客户机读取表

System.setProperty("java.security.krb5.realm", "EXAMPLE.COM");
        System.setProperty("java.security.krb5.kdc", "D-9539.mydomain.com");
        //System.setProperty("sun.security.krb5.debug", "true");

    Configuration config = HBaseConfiguration.create();
    config.set("hadoop.security.authentication", "Kerberos");
    config.set("hbase.security.authentication", "kerberos");
    UserGroupInformation.setConfiguration(config);
    config.set("hbase.zookeeper.quorum", "D-9539.mydomain.com");
    config.setInt("zookeeper.recovery.retry",1);
    config.set("zookeeper.znode.parent","/hbase-secure");
    config.set("hbase.client.retries.number", Integer.toString(2));
    config.set("zookeeper.session.timeout", Integer.toString(60000));
      UserGroupInformation userGroupInformation = UserGroupInformation.loginUserFromKeytabAndReturnUGI("mohanv@EXAMPLE.COM", "D:\\mohanv.keytab" );
      //UserGroupInformation userGroupInformation = UserGroupInformation.loginUserFromKeytabAndReturnUGI("hbase-D9539@EXAMPLE.COM", "/Users/guest/Work/workspace/hbase.headless.keytab" );
    UserGroupInformation.setLoginUser(userGroupInformation);
    Connection conn = ConnectionFactory.createConnection(config);
    TableName tablename=TableName.valueOf("tweetTest2");
    Table table = conn.getTable(tablename);
    Get get=new Get(Bytes.toBytes("row1")) ;
    get.addFamily(Bytes.toBytes("twt"));

    System.out.println(Bytes.toString(table.get(get).getRow()));

但是得到

org.apache.hadoop.hbase.client.RetriesExhaustedException:

然后

clientClosingConnectionException