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我已经在windows中安装了cygwin，并在上面配置了hadoop0.20.0，我可以在eclipse中成功运行wordcount项目，但是当我在hadoop-运行wordcount时。.*-example.jar，它会抛出以下错误

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)

会有什么问题，请帮忙

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1 回答 1

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你的命令对我来说很好。尝试给出带有文件名的输入路径。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
于 2013-06-29T05:11:59.143 回答