// get map operator and initialize it
MapOperator mo = new MapOperator();
mo.initializeAsRoot(hconf, mrwork);
Text tw = new Text();
InspectableObject io1 = new InspectableObject();
InspectableObject io2 = new InspectableObject();
for(int i=0; i<5; i++) {
String answer = "[[" + i + ", " + (i+1) + ", " + (i+2) + "]]";
tw.set("" + i + "\u0001" + (i+1) + "\u0001"+ (i+2));
mo.process((Writable)tw);