问题: Type mismatch in key from map: expected org.apache.hadoop.io.Text, recieved org.apache.hadoop.io.LongWritable 解决方案2023-10-14 16:18:46在Job中添加相应的输入类型,例如: job.setMapOutputKeyClass(Text.class); job.setMapOutputValueClass(IntWritable.class); 上一篇:Vitrualbox 桥接网卡界面名称未指定、Filters currently installed on the system have reached the limit、不能为虚拟电脑 打开一个新任务下一篇:NuGet安装及简单使用