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运行hadoop的wordcount时ExitCodeException
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各位大神,本人菜鸟,走过路过指点指点,感激不尽。。。。

14/04/20 23:12:49 INFO mapreduce.Job: Task Id : attempt_1398049819443_0003_m_000000_2, Status : FAILED

Exception from container-launch:
org.apache.hadoop.util.Shell$ExitCodeException:
        at org.apache.hadoop.util.Shell.runCommand(Shell.java:464)
        at org.apache.hadoop.util.Shell.run(Shell.java:379)
        at org.apache.hadoop.util.Shell$ShellCommandExecutor.execute(Shell.java:589)
        at org.apache.hadoop.yarn.server.nodemanager.DefaultContainerExecutor.launchContainer(DefaultContainerExecutor.java:195)
        at org.apache.hadoop.yarn.server.nodemanager.containermanager.launcher.ContainerLaunch.call(ContainerLaunch.java:283)
        at org.apache.hadoop.yarn.server.nodemanager.containermanager.launcher.ContainerLaunch.call(ContainerLaunch.java:79)
        at java.util.concurrent.FutureTask$Sync.innerRun(FutureTask.java:314)
        at java.util.concurrent.FutureTask.run(FutureTask.java:149)
        at java.util.concurrent.ThreadPoolExecutor$Worker.runTask(ThreadPoolExecutor.java:896)
        at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:918)
        at java.lang.Thread.run(Thread.java:735)

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