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java.lang.RuntimeException: java.io.EOFException
java.lang.Exception: java.lang.RuntimeException: java.io.EOFException at org.apache.hadoop.mapred.LocalJobRunner$Job.runTasks(LocalJobRunner.java:492) at org.apache.hadoop.mapred.LocalJobRunner$Job.run(LocalJobRunner.java:559)Caused by: java.lang.RuntimeException: java.io.EOFException at org.apache.hadoop.io.WritableComparator.compare(WritableComparator.java:165) at org.apache.hadoop.mapreduce.task.ReduceContextImpl.nextKeyValue(ReduceContextImpl.java:158) at org.apache.hadoop.mapreduce.task.ReduceContextImpl.nextKey(ReduceContextImpl.java:121) at org.apache.hadoop.mapreduce.lib.reduce.WrappedReducer$Context.nextKey(WrappedReducer.java:302) at org.apache.hadoop.mapreduce.Reducer.run(Reducer.java:170) at org.apache.hadoop.mapred.ReduceTask.runNewReducer(ReduceTask.java:628) at org.apache.hadoop.mapred.ReduceTask.run(ReduceTask.java:390) at org.apache.hadoop.mapred.LocalJobRunner$Job$ReduceTaskRunnable.run(LocalJobRunner.java:347) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.run(FutureTask.java:266) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617) at java.lang.Thread.run(Thread.java:745)Caused by: java.io.EOFException at java.io.DataInputStream.readInt(DataInputStream.java:392) at org.apache.hadoop.io.IntWritable.readFields(IntWritable.java:47) at writable.WikiWritable.readFields(WikiWritable.java:39) at org.apache.hadoop.io.WritableComparator.compare(WritableComparator.java:158) ... 12 more