java.lang.RuntimeException: readObject can't find class

GitHub | jon-wei | 7 months ago
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    GitHub comment 3222#232495553

    GitHub | 7 months ago | jon-wei
    java.lang.RuntimeException: readObject can't find class
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    Root Cause Analysis

    1. java.lang.ClassNotFoundException

      Class io.druid.indexer.DetermineHashedPartitionsJob$DetermineCardinalityMapper not found

      at org.apache.hadoop.conf.Configuration.getClassByName()
    2. Hadoop
      Configuration.getClassByName
      1. org.apache.hadoop.conf.Configuration.getClassByName(Configuration.java:1788)
      1 frame
    3. Hadoop
      TaggedInputSplit.readFields
      1. org.apache.hadoop.mapreduce.lib.input.TaggedInputSplit.readClass(TaggedInputSplit.java:134)
      2. org.apache.hadoop.mapreduce.lib.input.TaggedInputSplit.readFields(TaggedInputSplit.java:122)
      2 frames
    4. Hadoop
      WritableSerialization$WritableDeserializer.deserialize
      1. org.apache.hadoop.io.serializer.WritableSerialization$WritableDeserializer.deserialize(WritableSerialization.java:71)
      2. org.apache.hadoop.io.serializer.WritableSerialization$WritableDeserializer.deserialize(WritableSerialization.java:42)
      2 frames
    5. Hadoop
      YarnChild$2.run
      1. org.apache.hadoop.mapred.MapTask.getSplitDetails(MapTask.java:371)
      2. org.apache.hadoop.mapred.MapTask.runOldMapper(MapTask.java:403)
      3. org.apache.hadoop.mapred.MapTask.run(MapTask.java:342)
      4. org.apache.hadoop.mapred.YarnChild$2.run(YarnChild.java:168)
      4 frames
    6. Java RT
      Subject.doAs
      1. java.security.AccessController.doPrivileged(Native Method)
      2. javax.security.auth.Subject.doAs(Subject.java:415)
      2 frames
    7. Hadoop
      UserGroupInformation.doAs
      1. org.apache.hadoop.security.UserGroupInformation.doAs(UserGroupInformation.java:1548)
      1 frame
    8. Hadoop
      YarnChild.main
      1. org.apache.hadoop.mapred.YarnChild.main(YarnChild.java:163)
      1 frame