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  1. Hadoop Map/Reduce
  2. MAPREDUCE-21

NegativeArraySizeException in reducer with new api

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    Details

    • Type: Bug
    • Status: Resolved
    • Priority: Major
    • Resolution: Duplicate
    • Affects Version/s: None
    • Fix Version/s: None
    • Component/s: task
    • Labels:
      None

      Description

      I observed one of the reducers failing with NegativeArraySizeException with new api.
      The exception trace:

      java.lang.NegativeArraySizeException
      at org.apache.hadoop.io.BytesWritable.setCapacity(BytesWritable.java:119)
      at org.apache.hadoop.io.BytesWritable.setSize(BytesWritable.java:98)
      at org.apache.hadoop.io.BytesWritable.readFields(BytesWritable.java:153)
      at org.apache.hadoop.io.serializer.WritableSerialization$WritableDeserializer.deserialize(WritableSerialization.java:67)
      at org.apache.hadoop.io.serializer.WritableSerialization$WritableDeserializer.deserialize(WritableSerialization.java:40)
      at org.apache.hadoop.mapreduce.ReduceContext.nextKeyValue(ReduceContext.java:142)
      at org.apache.hadoop.mapreduce.ReduceContext.nextKey(ReduceContext.java:121)
      at org.apache.hadoop.mapreduce.Reducer.run(Reducer.java:189)
      at org.apache.hadoop.mapred.ReduceTask.runNewReducer(ReduceTask.java:542)
      at org.apache.hadoop.mapred.ReduceTask.run(ReduceTask.java:409)
      at org.apache.hadoop.mapred.Child.main(Child.java:159)

      The corresponding line in ReduceContext is

      line#142    key = keyDeserializer.deserialize(key);
      

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              • Assignee:
                Unassigned
                Reporter:
                amareshwari Amareshwari Sriramadasu
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                • Created:
                  Updated:
                  Resolved: