我在windows中安装了cygwin，并在上面配置了hadoop0.20.0设置，我可以在eclipse中成功运行wordcount项目，但当我在hadoop-中运行wordcount时.*-example.jar，它抛出以下错误
3/06/28 07:32:51 INFO input.FileInputFormat: Total input paths to process : 1
13/06/28 07:32:52 INFO mapred.JobClient: Running job: job_201306280622_0002
13/06/28 07:32:53 INFO mapred.JobClient: map 0% reduce 0%
13/06/28 07:32:57 INFO mapred.JobClient: Task Id : attempt_201306280622_0002_m_000002_0, Status : FAILED
Error initializing attempt_201306280622_0002_m_000002_0:
org.apache.hadoop.util.Shell$ExitCodeException: //job.jar: invalid mode: `jar'
Try `//job.jar --help' for more information.
at org.apache.hadoop.util.Shell.runCommand(Shell.java:195)
at org.apache.hadoop.util.Shell.run(Shell.java:134)
at org.apache.hadoop.util.Shell$ShellCommandExecutor.execute(Shell.java: 286)
问题是什么，plz assit
你的命令对我来说很好。试着用文件名给出输入路径。我希望这能解决你的问题。
bin/hadoop jar hadoop-0.20.0-examples.jar wordcount /user/input/input_file.txt /user/output