int keyCnt = 100;
int valCnt = 20;
super.initEnvironment(MEMORY_MANAGER_SIZE, NETWORK_BUFFER_SIZE);
super.addInput(new UniformRecordGenerator(keyCnt, valCnt, 0, 0, false), 0);
super.addInput(new UniformRecordGenerator(keyCnt, valCnt, keyCnt, 0, false), 0);
super.addInput(new UniformRecordGenerator(keyCnt, valCnt, keyCnt*2, 0, false), 0);
super.addInput(new UniformRecordGenerator(keyCnt, valCnt, keyCnt*3, 0, false), 0);
DataSinkTask<Record> testTask = new DataSinkTask<Record>();
super.registerFileOutputTask(testTask, MockOutputFormat.class, new File(tempTestPath).toURI().toString());