package demos;

import java.io.IOException;
import java.util.Iterator;

import ml.data.CSVDataReader;

import org.apache.hadoop.io.DoubleWritable;
import org.apache.hadoop.io.IntWritable;
import org.apache.hadoop.mapred.JobConf;
import org.apache.hadoop.mapred.MapReduceBase;
import org.apache.hadoop.mapred.OutputCollector;
import org.apache.hadoop.mapred.Reducer;
import org.apache.hadoop.mapred.Reporter;

public class NoOpReducer<A,B> extends MapReduceBase implements Reducer<A, B, A, B>{

	// no-op reducer
	@Override
	public void reduce(A key, Iterator<B> values,
			OutputCollector<A, B> output, Reporter reporter)
			throws IOException {
		while(values.hasNext()){
			output.collect(key, values.next());
		}
	}
}