运行环境:虚拟机,Ubuntu16,Ubuntu Server 做Hadoop集群(一主两从),编程软件eclipse。
运行时出现如下错误:
(Hadoop的输入LongWritable不能转变为Text)
When you read a file with a M/R program, the input key of your mapper should be the index of the line in the file, while the input value will be the full line.So here what's h