getTaskConfig().setMemoryDriver(BNLJN_MEM);
setNumFileHandlesForSort(4);
final MatchDriver<Record, Record, Record> testTask = new MatchDriver<Record, Record, Record>();
addInput(new UniformRecordGenerator(keyCnt1, valCnt1, true));
addInput(new UniformRecordGenerator(keyCnt2, valCnt2, true));
try {
testDriver(testTask, MockFailingMatchStub.class);
Assert.fail("Driver did not forward Exception.");
} catch (ExpectedTestException e) {