public class SampleDistributedCache
{
  public static class DCMapper extends Mapper<Object, Text, Text, IntWritable>
  {
    //Get the list of uris for the files added in DC
    Path[] uris = DistributedCache.getLocalCacheFiles(context.getConfiguration());
    try{
        BufferedReader readBuff = new BufferedReader(new FileReader(uris[0].toString()));
        String line;
        while ((line=readBuff.readLine())!=null)
        {
          System.out.println(line);
        }
        readBuff.close();
        }
         catch (Exception e)
         {
           System.out.println(e.toString());
         }
  }


 public static void main(String[] args) throws Exception {
   DistributedCache.addCacheFile(new URI("hdfs://yournamenode/configFile.cfg"),job.getConfiguration());
 }
}