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https://issues.apache.org/jira/browse/MAPREDUCE-21?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15349935#comment-15349935
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Wilfred Spiegelenburg commented on MAPREDUCE-21:
------------------------------------------------
This is fixed in trunk as HADOOP-11901 and should be closed as a dupe of that
one.
I am no longer on the contributor list for the MAPREDUCE project so I can't do
it.
> NegativeArraySizeException in reducer with new api
> --------------------------------------------------
>
> Key: MAPREDUCE-21
> URL: https://issues.apache.org/jira/browse/MAPREDUCE-21
> Project: Hadoop Map/Reduce
> Issue Type: Bug
> Components: task
> Reporter: Amareshwari Sriramadasu
>
> 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
> {code}
> line#142 key = keyDeserializer.deserialize(key);
> {code}
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