@Override
protected List<Driver> createDrivers(TaskContext taskContext) {
if (lookupSourceSupplier == null) {
OperatorFactory ordersTableScan =
createTableScanOperator(0, "orders", "orderkey", "totalprice");
HashBuilderOperatorFactory hashBuilder =
new HashBuilderOperatorFactory(1, ordersTableScan.getTypes(), Ints.asList(0), 1_500_000);
DriverContext driverContext = taskContext.addPipelineContext(false, false).addDriverContext();
Driver driver =
new DriverFactory(false, false, ordersTableScan, hashBuilder).createDriver(driverContext);
while (!driver.isFinished()) {
driver.process();
}
lookupSourceSupplier = hashBuilder.getLookupSourceSupplier();
}
OperatorFactory lineItemTableScan =
createTableScanOperator(0, "lineitem", "orderkey", "quantity");
OperatorFactory joinOperator =
LookupJoinOperators.innerJoin(
1, lookupSourceSupplier, lineItemTableScan.getTypes(), Ints.asList(0));
NullOutputOperatorFactory output = new NullOutputOperatorFactory(2, joinOperator.getTypes());
DriverFactory driverFactory =
new DriverFactory(true, true, lineItemTableScan, joinOperator, output);
DriverContext driverContext = taskContext.addPipelineContext(true, true).addDriverContext();
Driver driver = driverFactory.createDriver(driverContext);
return ImmutableList.of(driver);
}
/*
select orderkey, quantity, totalprice
from lineitem join orders using (orderkey)
*/
@Override
protected List<Driver> createDrivers(TaskContext taskContext) {
ImmutableList.Builder<OperatorFactory> driversBuilder = ImmutableList.builder();
driversBuilder.add(ordersTableScan);
OperatorFactory source = ordersTableScan;
Optional<Integer> hashChannel = Optional.empty();
if (hashEnabled) {
source =
createHashProjectOperator(1, new PlanNodeId("test"), ImmutableList.of(BIGINT, DOUBLE));
driversBuilder.add(source);
hashChannel = Optional.of(2);
}
// hash build
HashBuilderOperatorFactory hashBuilder =
new HashBuilderOperatorFactory(
2,
new PlanNodeId("test"),
source.getTypes(),
ImmutableMap.of(),
Ints.asList(0),
hashChannel,
false,
Optional.empty(),
1_500_000,
1);
driversBuilder.add(hashBuilder);
DriverFactory hashBuildDriverFactory =
new DriverFactory(true, false, driversBuilder.build(), OptionalInt.empty());
Driver hashBuildDriver =
hashBuildDriverFactory.createDriver(
taskContext.addPipelineContext(true, false).addDriverContext());
hashBuildDriverFactory.close();
// join
ImmutableList.Builder<OperatorFactory> joinDriversBuilder = ImmutableList.builder();
joinDriversBuilder.add(lineItemTableScan);
source = lineItemTableScan;
hashChannel = Optional.empty();
if (hashEnabled) {
source =
createHashProjectOperator(1, new PlanNodeId("test"), ImmutableList.of(BIGINT, BIGINT));
joinDriversBuilder.add(source);
hashChannel = Optional.of(2);
}
OperatorFactory joinOperator =
LookupJoinOperators.innerJoin(
2,
new PlanNodeId("test"),
hashBuilder.getLookupSourceFactory(),
source.getTypes(),
Ints.asList(0),
hashChannel,
false);
joinDriversBuilder.add(joinOperator);
joinDriversBuilder.add(
new NullOutputOperatorFactory(3, new PlanNodeId("test"), joinOperator.getTypes()));
DriverFactory joinDriverFactory =
new DriverFactory(true, true, joinDriversBuilder.build(), OptionalInt.empty());
Driver joinDriver =
joinDriverFactory.createDriver(
taskContext.addPipelineContext(true, true).addDriverContext());
joinDriverFactory.close();
return ImmutableList.of(hashBuildDriver, joinDriver);
}