What you're getting back is an object which allows you to iterate over the results. You can turn the results of groupByKey into a list by calling list() on the values, e.g. example = sc.parallelize([(0, u'D'), (0, u'D'), (1, u'E'), (2, u'F')]) exampl…
操作重现: 法1:新建连接——>新建数据库——>右键数据库导入脚本——>提示:Specified key was too long; max key length is 767 bytes 法2:新建连接——>新建数据库——>新增查询——>复制脚本中的内容,运行——>提示:Specified key was too long; max key length is 767 bytes 原因: MySQL的varchar主键只支持不超过768个字节 或者 768/2=…