java.lang.Exception: java.lang.NullPointerException

Stack Overflow | SUDARSHAN | 4 months ago
  1. 0

    NullPointerException in Map Reduce job

    Stack Overflow | 4 months ago | SUDARSHAN
    java.lang.Exception: java.lang.NullPointerException
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    HFileOutputFormat2 + HBase 1.0.0

    Google Groups | 2 years ago | Jean-Marc Spaggiari
    java.lang.Exception: java.lang.NullPointerException
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    Jobs in stand-alone mode fail.

    GitHub | 3 years ago | lucidfrontier45
    java.lang.Exception: java.lang.NullPointerException

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    Root Cause Analysis

    1. java.lang.NullPointerException

      No message provided

      at org.apache.hadoop.mapred.MapTask$MapOutputBuffer.init()
    2. Hadoop
      LocalJobRunner$Job$MapTaskRunnable.run
      1. org.apache.hadoop.mapred.MapTask$MapOutputBuffer.init(MapTask.java:843)
      2. org.apache.hadoop.mapred.MapTask.createSortingCollector(MapTask.java:376)
      3. org.apache.hadoop.mapred.MapTask.access$100(MapTask.java:85)
      4. org.apache.hadoop.mapred.MapTask$NewOutputCollector.<init>(MapTask.java:584)
      5. org.apache.hadoop.mapred.MapTask.runNewMapper(MapTask.java:656)
      6. org.apache.hadoop.mapred.MapTask.run(MapTask.java:330)
      7. org.apache.hadoop.mapred.LocalJobRunner$Job$MapTaskRunnable.run(LocalJobRunner.java:268)
      7 frames
    3. Java RT
      Thread.run
      1. java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:471)
      2. java.util.concurrent.FutureTask.run(FutureTask.java:262)
      3. java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145)
      4. java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615)
      5. java.lang.Thread.run(Thread.java:745)
      5 frames