遇到問題：

10/01/18 20:52:39 INFO input.FileInputFormat?: Total input paths to process : 2 10/01/18 20:52:39 INFO mapred.JobClient?: Running job: job_201001181452_0038 10/01/18 20:52:40 INFO mapred.JobClient?: map 0% reduce 0% 10/01/18 20:52:50 INFO mapred.JobClient?: Task Id : attempt_201001181452_0038_m_000000_0, Status : FAILED java.io.IOException: Type mismatch in key from map: expected org.apache.hadoop.io.Text, recieved org.apache.hadoop.io.LongWritable?

待解