code: @Override
    public void readFields(DataInput in) throws IOException {
      this.filename = Text.readString(in);
      this.jobid = Text.readString(in);
      this.isJobConfFile = in.readBoolean();
      this.isJobHistoryFile = in.readBoolean();
    }
docs: /*
  (non-Javadoc)
  
  @see org.apache.hadoop.io.Writable#readFields(java.io.DataInput)