@Override
  protected TProcessor createProcessor() {
    return new THBaseService.Processor<>(HbaseHandlerMetricsProxy
      .newInstance((THBaseService.Iface) hbaseServiceHandler, metrics, conf));
  }
ThriftServer - this class starts up a Thrift server which implements the HBase API specified in
the HbaseClient.thrift IDL file.
hbase-thrift/src/main/java/org/apache/hadoop/hbase/thrift2/ThriftServer.java