This is custom Input Format Class which is used while reading Microsoft Word Document file using MapReduce API

WordInputFormat.java

/*
 * To change this license header, choose License Headers in Project Properties.
 * To change this template file, choose Tools | Templates
 * and open the template in the editor.
 */
package com.milind.mr.worddoc;

import java.io.IOException;

import org.apache.hadoop.io.LongWritable;
import org.apache.hadoop.io.Text;
import org.apache.hadoop.mapreduce.InputSplit;
import org.apache.hadoop.mapreduce.RecordReader;
import org.apache.hadoop.mapreduce.TaskAttemptContext;
import org.apache.hadoop.mapreduce.lib.input.FileInputFormat;

/**
 * <p>
 * An {@link org.apache.hadoop.mapreduce.InputFormat} for excel spread sheet
 * files. Multiple sheets are supported
 * <p/>
 * Keys are the position in the file, and values are the row containing all
 * columns for the particular row.
 */
/**
 *
 * @author milind
 */
public class WordInputFormat extends FileInputFormat<LongWritable, Text> {

    @Override
    public RecordReader<LongWritable, Text> createRecordReader(InputSplit split,
            TaskAttemptContext context) throws IOException, InterruptedException {

        return new WordRecordReader();
    }

}