java.lang.NullPointerException

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  1. 0

    Hadoop - Exception in thread "main" java.lang.NullPointerException

    Stack Overflow | 2 years ago
    java.lang.NullPointerException
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  3. 0

    hadoop 2.2.0 wordcount prg unable to run from remote

    Stack Overflow | 3 years ago | abishek rao
    java.lang.NullPointerException
  4. 0

    at org.apache.hadoop.examples.WordCount.main(WordCount.java:84)

    Stack Overflow | 3 years ago | jarrick
    java.lang.NullPointerException

  1. muffinmannen 1 times, last 12 months ago
  2. rp 1 times, last 3 months ago
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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(ProcessBuilder.java:1010)
    1 frame
  3. Hadoop
    FilterFileSystem.mkdirs
    1. org.apache.hadoop.util.Shell.runCommand(Shell.java:483)
    2. org.apache.hadoop.util.Shell.run(Shell.java:456)
    3. org.apache.hadoop.util.Shell$ShellCommandExecutor.execute(Shell.java:722)
    4. org.apache.hadoop.util.Shell.execCommand(Shell.java:815)
    5. org.apache.hadoop.util.Shell.execCommand(Shell.java:798)
    6. org.apache.hadoop.fs.RawLocalFileSystem.setPermission(RawLocalFileSystem.java:731)
    7. org.apache.hadoop.fs.RawLocalFileSystem.mkOneDirWithMode(RawLocalFileSystem.java:489)
    8. org.apache.hadoop.fs.RawLocalFileSystem.mkdirsWithOptionalPermission(RawLocalFileSystem.java:530)
    9. org.apache.hadoop.fs.RawLocalFileSystem.mkdirs(RawLocalFileSystem.java:507)
    10. org.apache.hadoop.fs.FilterFileSystem.mkdirs(FilterFileSystem.java:305)
    10 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:144)
    3. org.apache.hadoop.mapreduce.Job$10.run(Job.java:1290)
    4. org.apache.hadoop.mapreduce.Job$10.run(Job.java:1287)
    4 frames
  5. Java RT
    Subject.doAs
    1. java.security.AccessController.doPrivileged(Native Method)
    2. javax.security.auth.Subject.doAs(Subject.java:415)
    2 frames
  6. Hadoop
    UserGroupInformation.doAs
    1. org.apache.hadoop.security.UserGroupInformation.doAs(UserGroupInformation.java:1657)
    1 frame
  7. Hadoop
    Job.waitForCompletion
    1. org.apache.hadoop.mapreduce.Job.submit(Job.java:1287)
    2. org.apache.hadoop.mapreduce.Job.waitForCompletion(Job.java:1308)
    2 frames
  8. MapReduce.HadMapReduce
    RecCount.run
    1. MapReduce.HadMapReduce.RecCount.run(RecCount.java:22)
    1 frame
  9. Hadoop
    ToolRunner.run
    1. org.apache.hadoop.util.ToolRunner.run(ToolRunner.java:70)
    2. org.apache.hadoop.util.ToolRunner.run(ToolRunner.java:84)
    2 frames
  10. MapReduce.HadMapReduce
    RecCount.main
    1. MapReduce.HadMapReduce.RecCount.main(RecCount.java:26)
    1 frame