java.io.EOFException

java.lang.Exception: java.io.EOFException
at org.apache.hadoop.mapred.LocalJobRunner$Job.runTasks(LocalJobRunner.java:462)
at org.apache.hadoop.mapred.LocalJobRunner$Job.run(LocalJobRunner.java:529)
Caused by: java.io.EOFException

at java.io.DataInputStream.readUnsignedShort(DataInputStream.java:340)

 

@Override
public void readFields(DataInput in) throws IOException {
//in.readUTF();
  
}

自定义类型实现Writable 接口时重写反序列换方法,8个属性调用了9次反序列换!