int valCnt1 = 20;
int keyCnt2 = 20;
int valCnt2 = 20;
addInput(new UniformRecordGenerator(keyCnt1, valCnt1, false));
addInput(new UniformRecordGenerator(keyCnt2, valCnt2, false));
addDriverComparator(this.comparator1);
addDriverComparator(this.comparator2);
getTaskConfig().setDriverPairComparator(RecordPairComparatorFactory.get());
setOutput(new NirvanaOutputList());
getTaskConfig().setDriverStrategy(DriverStrategy.HYBRIDHASH_BUILD_SECOND_CACHED);