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Root Cause Analysis

  1. java.lang.NullPointerException

    No message provided

    at org.apache.hadoop.mapred.MapTask$MapOutputBuffer.init()
  2. Hadoop
    YarnChild$2.run
    1. org.apache.hadoop.mapred.MapTask$MapOutputBuffer.init(MapTask.java:1012)
    2. org.apache.hadoop.mapred.MapTask.createSortingCollector(MapTask.java:402)
    3. org.apache.hadoop.mapred.MapTask.access$100(MapTask.java:81)
    4. org.apache.hadoop.mapred.MapTask$NewOutputCollector.<init>(MapTask.java:698)
    5. org.apache.hadoop.mapred.MapTask.runNewMapper(MapTask.java:770)
    6. org.apache.hadoop.mapred.MapTask.run(MapTask.java:341)
    7. org.apache.hadoop.mapred.YarnChild$2.run(YarnChild.java:164)
    7 frames
  3. Java RT
    Subject.doAs
    1. java.security.AccessController.doPrivileged(Native Method)
    2. javax.security.auth.Subject.doAs(Subject.java:415)
    2 frames
  4. Hadoop
    UserGroupInformation.doAs
    1. org.apache.hadoop.security.UserGroupInformation.doAs(UserGroupInformation.java:1693)
    1 frame
  5. Hadoop
    YarnChild.main
    1. org.apache.hadoop.mapred.YarnChild.main(YarnChild.java:158)
    1 frame