private static final Logger logger = LoggerFactory.getLogger(HBaseOperation.class);public static final String OP_ROW_KEY = "Pyel";private static Connection connection = null;private static Admin admin = null;
static {try {Configuration configuration = HBaseConfiguration.create();configuration.set("hbase.zookeeper.quorum" ,"emr-worker-2, emr-worker-1, emr-header-1");  configuration.set( "hbase.zookeeper.property.clientPort" ,"2181");connection = ConnectionFactory.createConnection(configuration);  admin = connection. getAdmin();}catch (IOException e){logger.error( "init failed", e);}}