final int expCnt = keyCnt1*valCnt1*keyCnt2*valCnt2;
setOutput(this.output);
addInput(new UniformRecordGenerator(keyCnt1, valCnt1, false));
addInput(new UniformRecordGenerator(keyCnt2, valCnt2, false));
getTaskConfig().setDriverStrategy(DriverStrategy.NESTEDLOOP_STREAMED_OUTER_SECOND);
getTaskConfig().setMemoryDriver(CROSS_MEM);
final CrossDriver<Record, Record, Record> testTask = new CrossDriver<Record, Record, Record>();