Hadoop 报错: org.apache.hadoop.mapreduce.lib.input.FileSplit cannot be cast to org.apache

Error: java.lang.ClassCastException: org.apache.hadoop.mapreduce.lib.input.FileSplit cannot be cast to org.apache.hadoop.mapred.FileSplit

包引入错误，mapreduce包下的类是新版API，mapred是旧版API，换成mapreduce包下的类就可以了