@Override
  protected void addOptions(Options options) {
    super.addOptions(options);
    options.addOption("ro", READONLY_OPTION, false,
      "Respond only to read method requests [default: false]");
  }
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