java.io.IOException: Job failed!

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    Root Cause Analysis

    1. java.io.IOException

      Job failed!

      at org.apache.hadoop.mapred.JobClient.runJob()
    2. Hadoop
      JobClient.runJob
      1. org.apache.hadoop.mapred.JobClient.runJob(JobClient.java:1357)
      1 frame
    3. Apache Hadoop MapReduce Examples
      Grep.run
      1. org.apache.hadoop.examples.Grep.run(Grep.java:69)
      1 frame
    4. Hadoop
      ToolRunner.run
      1. org.apache.hadoop.util.ToolRunner.run(ToolRunner.java:65)
      1 frame
    5. Apache Hadoop MapReduce Examples
      Grep.main
      1. org.apache.hadoop.examples.Grep.main(Grep.java:93)
      1 frame
    6. Java RT
      Method.invoke
      1. sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
      2. sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)
      3. sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
      4. java.lang.reflect.Method.invoke(Method.java:606)
      4 frames
    7. Hadoop
      ProgramDriver.driver
      1. org.apache.hadoop.util.ProgramDriver$ProgramDescription.invoke(ProgramDriver.java:68)
      2. org.apache.hadoop.util.ProgramDriver.driver(ProgramDriver.java:139)
      2 frames
    8. Apache Hadoop MapReduce Examples
      ExampleDriver.main
      1. org.apache.hadoop.examples.ExampleDriver.main(ExampleDriver.java:64)
      1 frame
    9. Java RT
      Method.invoke
      1. sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
      2. sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)
      3. sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
      4. java.lang.reflect.Method.invoke(Method.java:606)
      4 frames
    10. Hadoop
      RunJar.main
      1. org.apache.hadoop.util.RunJar.main(RunJar.java:160)
      1 frame