我正在尝试使用此指南在hadoop上运行KMeans。
我在eclipse-luna中运行它。当我执行时，map和reduce都显示它们完成100％。但我没有得到输出。相反，我最后得到了跟随错误。请一些人帮我解决这个问题..
15/03/20 11:29:44 INFO mapred.JobClient: Cleaning up the staging area file:/tmp/hadoop-hduser/mapred/staging/hduser378797276/.staging/job_local378797276_0002
15/03/20 11:29:44 ERROR security.UserGroupInformation: PriviledgedActionException as:hduser cause:java.io.IOException: No input paths specified in job
Exception in thread "main" java.io.IOException: No input paths specified in job
at org.apache.hadoop.mapreduce.lib.input.FileInputFormat.listStatus(FileInputFormat.java:193)
at org.apache.hadoop.mapreduce.lib.input.SequenceFileInputFormat.listStatus(SequenceFileInputFormat.java:55)
at org.apache.hadoop.mapreduce.lib.input.FileInputFormat.getSplits(FileInputFormat.java:252)
at org.apache.hadoop.mapred.JobClient.writeNewSplits(JobClient.java:1054)
at org.apache.hadoop.mapred.JobClient.writeSplits(JobClient.java:1071)
at org.apache.hadoop.mapred.JobClient.access$700(JobClient.java:179)
at org.apache.hadoop.mapred.JobClient$2.run(JobClient.java:983)
at org.apache.hadoop.mapred.JobClient$2.run(JobClient.java:936)
at java.security.AccessController.doPrivileged(Native Method)
at javax.security.auth.Subject.doAs(Subject.java:422)
at org.apache.hadoop.security.UserGroupInformation.doAs(UserGroupInformation.java:1190)
at org.apache.hadoop.mapred.JobClient.submitJobInternal(JobClient.java:936)
at org.apache.hadoop.mapreduce.Job.submit(Job.java:550)
at org.apache.hadoop.mapreduce.Job.waitForCompletion(Job.java:580)
at com.clustering.mapreduce.KMeansClusteringJob.main(KMeansClusteringJob.java:114)
答案 0 :(得分：0)
您必须在运行map reduce程序之前提供输入文件位置。有两种方法可以提供输入文件位置。
将程序转换为jar文件并在hadoop集群中运行以下命令
hadoop jar NameOfYourJarFile InputFileLocation OutPutFileLocation `