presto-benchmark/src/main/java/io/prestosql/benchmark/HashJoinBenchmark.java/HashJoinBenchmark/createDrivers
class HashJoinBenchmark:    @Override
    protected List<Driver> createDrivers(TaskContext taskContext)
    {
        if (probeDriverFactory == null) {
            List<Type> ordersTypes = getColumnTypes("orders", "orderkey", "totalprice");
            OperatorFactory ordersTableScan = createTableScanOperator(0, new PlanNodeId("test"), "orders", "orderkey", "totalprice");
            JoinBridgeManager<PartitionedLookupSourceFactory> lookupSourceFactoryManager = JoinBridgeManager.lookupAllAtOnce(new PartitionedLookupSourceFactory(
                    ordersTypes,
                    ImmutableList.of(0, 1).stream()
                            .map(ordersTypes::get)
                            .collect(toImmutableList()),
                    Ints.asList(0).stream()
                            .map(ordersTypes::get)
                            .collect(toImmutableList()),
                    1,
                    requireNonNull(ImmutableMap.of(), "layout is null"),
                    false));
            HashBuilderOperatorFactory hashBuilder = new HashBuilderOperatorFactory(
                    1,
                    new PlanNodeId("test"),
                    lookupSourceFactoryManager,
                    ImmutableList.of(0, 1),
                    Ints.asList(0),
                    OptionalInt.empty(),
                    Optional.empty(),
                    Optional.empty(),
                    ImmutableList.of(),
                    1_500_000,
                    new PagesIndex.TestingFactory(false),
                    false,
                    SingleStreamSpillerFactory.unsupportedSingleStreamSpillerFactory());

            DriverContext driverContext = taskContext.addPipelineContext(0, false, false, false).addDriverContext();
            DriverFactory buildDriverFactory = new DriverFactory(0, false, false, ImmutableList.of(ordersTableScan, hashBuilder), OptionalInt.empty(), UNGROUPED_EXECUTION);

            List<Type> lineItemTypes = getColumnTypes("lineitem", "orderkey", "quantity");
            OperatorFactory lineItemTableScan = createTableScanOperator(0, new PlanNodeId("test"), "lineitem", "orderkey", "quantity");
            OperatorFactory joinOperator = LOOKUP_JOIN_OPERATORS.innerJoin(1, new PlanNodeId("test"), lookupSourceFactoryManager, lineItemTypes, Ints.asList(0), OptionalInt.empty(), Optional.empty(), OptionalInt.empty(), unsupportedPartitioningSpillerFactory());
            NullOutputOperatorFactory output = new NullOutputOperatorFactory(2, new PlanNodeId("test"));
            this.probeDriverFactory = new DriverFactory(1, true, true, ImmutableList.of(lineItemTableScan, joinOperator, output), OptionalInt.empty(), UNGROUPED_EXECUTION);

            Driver driver = buildDriverFactory.createDriver(driverContext);
            Future<LookupSourceProvider> lookupSourceProvider = lookupSourceFactoryManager.getJoinBridge(Lifespan.taskWide()).createLookupSourceProvider();
            while (!lookupSourceProvider.isDone()) {
                driver.process();
            }
            getFutureValue(lookupSourceProvider).close();
        }

        DriverContext driverContext = taskContext.addPipelineContext(1, true, true, false).addDriverContext();
        Driver driver = probeDriverFactory.createDriver(driverContext);
        return ImmutableList.of(driver);
    }