一滴水，一缕光

ES 批量导入数据报错 elasticsearch.exceptions.RequestError: RequestError(400, 'parse_exception', 'unknown key [mapping] for create index') 最后发现竟然是索引表配置文件的json数据格式不对， json数据换行必须是缩进一个tab键 ...

1. the three steps for reading datasets  1) define the constructor method of dataset;  2) define the iterator;  3) to obtain the data tensor from iterator by using get_next method.For example :import ...