code: public RecordReader<DocumentID, LineDocTextAndOp> getRecordReader(
        InputSplit split, JobConf job, Reporter reporter) throws IOException {
      reporter.setStatus(split.toString());
      return new LineDocRecordReader(job, (FileSplit) split);
    }
docs: /* (non-Javadoc)
  @see org.apache.hadoop.mapred.FileInputFormat#getRecordReader(org.apache.hadoop.mapred.InputSplit, org.apache.hadoop.mapred.JobConf, org.apache.hadoop.mapred.Reporter)