java.io.IOException

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    • java.io.IOException: wrong key class: class com.yunsuan.gaoyuan.comm.TblsWritable is not class org.apache.hadoop.io.IntWritable at org.apache.hadoop.mapred.IFile$Writer.append(IFile.java:196) at org.apache.hadoop.mapred.Task$CombineOutputCollector.collect(Task.java:1307) at org.apache.hadoop.mapred.Task$NewCombinerRunner$OutputConverter.write(Task.java:1624) at org.apache.hadoop.mapreduce.task.TaskInputOutputContextImpl.write(TaskInputOutputContextImpl.java:89) at org.apache.hadoop.mapreduce.lib.reduce.WrappedReducer$Context.write(WrappedReducer.java:105) at com.yunsuan.gaoyuan.recom.ComputeSimilarityJob$ChangeToSimilarityMatrixReducer.reduce(ComputeSimilarityJob.java:302) at com.yunsuan.gaoyuan.recom.ComputeSimilarityJob$ChangeToSimilarityMatrixReducer.reduce(ComputeSimilarityJob.java:1)
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