Writing only the Value on Mapper Job

I am currently working on a MapReduce Job which I am only using the mapper without the reducer. I do not need to write the key out because I only need the values which are stored in an array and want to write it out as my final output file. How 开发者_开发问答can achieve this on Hadoop? Instead of writing to the output both the key and the value, I am only interested in writing out only the values. The values are in an array. Thanks

public void pfor(TestFor pfor,LongWritable key, Text value, Context context, int times) throws IOException, InterruptedException{
    int n = 0;
    while(n < times){
        pfor.pforMap(key,value, context);
        n++;
    }
    for(int i =0;i<uv.length; i++){
        LOG.info(uv[i].get() + " Final output");
    }
    IntArrayWritable edge = new IntArrayWritable();
    edge.set(uv);
    context.write(new IntWritable(java.lang.Math.abs(randGen.nextInt())), edge);        
    uv= null;
}

Use NullWritable as value and emit your "edge" as key.

https://hadoop.apache.org/docs/stable/api/org/apache/hadoop/io/NullWritable.html