java.lang.NullPointerException

Stack Overflow | brijesh MISHRA | 10 months ago
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    mapreduce issue in eclipse

    Stack Overflow | 10 months ago | brijesh MISHRA
    java.lang.NullPointerException
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    Hadoop - Exception in thread "main" java.lang.NullPointerException

    Stack Overflow | 2 years ago
    java.lang.NullPointerException

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Root Cause Analysis

  1. java.lang.NullPointerException

    No message provided

    at java.lang.ProcessBuilder.start()
  2. Java RT
    ProcessBuilder.start
    1. java.lang.ProcessBuilder.start(Unknown Source)
    1 frame
  3. Hadoop
    FilterFileSystem.mkdirs
    1. org.apache.hadoop.util.Shell.runCommand(Shell.java:482)
    2. org.apache.hadoop.util.Shell.run(Shell.java:455)
    3. org.apache.hadoop.util.Shell$ShellCommandExecutor.execute(Shell.java:715)
    4. org.apache.hadoop.util.Shell.execCommand(Shell.java:808)
    5. org.apache.hadoop.util.Shell.execCommand(Shell.java:791)
    6. org.apache.hadoop.fs.RawLocalFileSystem.setPermission(RawLocalFileSystem.java:656)
    7. org.apache.hadoop.fs.RawLocalFileSystem.mkdirs(RawLocalFileSystem.java:444)
    8. org.apache.hadoop.fs.FilterFileSystem.mkdirs(FilterFileSystem.java:293)
    8 frames
  4. Hadoop
    Job$10.run
    1. org.apache.hadoop.mapreduce.JobSubmissionFiles.getStagingDir(JobSubmissionFiles.java:133)
    2. org.apache.hadoop.mapreduce.JobSubmitter.submitJobInternal(JobSubmitter.java:145)
    3. org.apache.hadoop.mapreduce.Job$10.run(Job.java:1297)
    4. org.apache.hadoop.mapreduce.Job$10.run(Job.java:1294)
    4 frames
  5. Java RT
    Subject.doAs
    1. java.security.AccessController.doPrivileged(Native Method)
    2. javax.security.auth.Subject.doAs(Unknown Source)
    2 frames
  6. Hadoop
    UserGroupInformation.doAs
    1. org.apache.hadoop.security.UserGroupInformation.doAs(UserGroupInformation.java:1656)
    1 frame
  7. Hadoop
    Job.waitForCompletion
    1. org.apache.hadoop.mapreduce.Job.submit(Job.java:1294)
    2. org.apache.hadoop.mapreduce.Job.waitForCompletion(Job.java:1315)
    2 frames
  8. Unknown
    WordCount.main
    1. WordCount.main(WordCount.java:81)
    1 frame