@Override
  protected HBaseServiceHandler createHandler(Configuration conf, UserProvider userProvider)
    throws IOException {
    return new ThriftHBaseServiceHandler(conf, userProvider);
  }
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