NellVertexReducer.java

import java.io.IOException;
import java.util.TreeSet;
import java.math.*;
import org.apache.hadoop.io.LongWritable;
import org.apache.hadoop.io.Text;
import org.apache.hadoop.mapreduce.Reducer;


public class NellVertexReducer extends Reducer < LongWritable, Text,LongWritable,Text> {

	@Override
	protected void reduce(LongWritable key, Iterable<Text> values , Context context)
			throws IOException, InterruptedException {
		// TODO Auto-generated method stub
		TreeSet<String> tree = new TreeSet<String>();
		for(Text v : values){
			tree.add(v.toString());
					
		}
		long i=0;
		long mykey=key.get();
		mykey=Math.abs(mykey);
		long finalkey;
		if(mykey<0){
			System.out.println("TESTMYKEY");
		}
		
		for(String k: tree){
			long keypart=mykey;
			if(keypart<0){
				System.out.println("TESTNEGATIVEKEYPART");
			}
			long ipart=i%(1<<20);
			if(ipart<0){
				System.out.println("TESTNEGATIVEIPART");
			}
			long timepart=(long) ((System.currentTimeMillis())% (1<<20));
			if(timepart<0){
				System.out.println("TESTNEGATIVETIMEPART");
			}
			finalkey= (ipart+keypart*(1<<20));
			if(mykey<0){
				System.out.println("TESTNEGATIVEMYKEY");
			}
			String v="node ["+'\n'+"id "+finalkey+"\n"+"label \""+k+"\"\n"+"]";
			String v1=k+":"+finalkey;
			context.write(null, new Text(v));
			i++;
		}
	}

}