def METHOD_NAME(self):
    id = self.meta.get_schema().get('sid', 'id')
    header = self.meta.get_schema().get('header')
    id_delimiter = self.meta.get_id_delimiter()
    if header:
        if isinstance(header, str):
            feature_list = header.split(id_delimiter)
        elif isinstance(header, list):
            feature_list = header
        else:
            feature_list = [header]
    else:
        raise Exception("hive table need data header")
    return id, feature_list, id_delimiter