private Split getLocalQuerySplit(TableHandle tableHandle) {
try {
List<Partition> partitions =
splitManager
.getPartitions(tableHandle, Optional.<TupleDomain<ColumnHandle>>absent())
.getPartitions();
SplitSource splitSource = splitManager.getPartitionSplits(tableHandle, partitions);
Split split = Iterables.getOnlyElement(splitSource.getNextBatch(1000));
checkState(splitSource.isFinished(), "Expected only one split for a local query");
return split;
} catch (InterruptedException e) {
Thread.currentThread().interrupt();
throw Throwables.propagate(e);
}
}
public List<Driver> createDrivers(
@Language("SQL") String sql, OutputFactory outputFactory, TaskContext taskContext) {
Statement statement = SqlParser.createStatement(sql);
if (printPlan) {
assertFormattedSql(statement);
}
PlanNodeIdAllocator idAllocator = new PlanNodeIdAllocator();
FeaturesConfig featuresConfig = new FeaturesConfig().setExperimentalSyntaxEnabled(true);
PlanOptimizersFactory planOptimizersFactory =
new PlanOptimizersFactory(metadata, splitManager, indexManager, featuresConfig);
QueryExplainer queryExplainer =
new QueryExplainer(
session,
planOptimizersFactory.get(),
metadata,
featuresConfig.isExperimentalSyntaxEnabled());
Analyzer analyzer =
new Analyzer(
session,
metadata,
Optional.of(queryExplainer),
featuresConfig.isExperimentalSyntaxEnabled());
Analysis analysis = analyzer.analyze(statement);
Plan plan =
new LogicalPlanner(session, planOptimizersFactory.get(), idAllocator, metadata)
.plan(analysis);
if (printPlan) {
System.out.println(PlanPrinter.textLogicalPlan(plan.getRoot(), plan.getTypes(), metadata));
}
SubPlan subplan =
new DistributedLogicalPlanner(session, metadata, idAllocator).createSubPlans(plan, true);
assertTrue(subplan.getChildren().isEmpty(), "Expected subplan to have no children");
LocalExecutionPlanner executionPlanner =
new LocalExecutionPlanner(
new NodeInfo(new NodeConfig().setEnvironment("test").setNodeId("test-node")),
metadata,
dataStreamProvider,
indexManager,
storageManager,
recordSinkManager,
null,
compiler);
// plan query
LocalExecutionPlan localExecutionPlan =
executionPlanner.plan(
session, subplan.getFragment().getRoot(), plan.getTypes(), outputFactory);
// generate sources
List<TaskSource> sources = new ArrayList<>();
long sequenceId = 0;
for (PlanNode sourceNode : subplan.getFragment().getSources()) {
if (sourceNode instanceof ValuesNode) {
continue;
}
TableScanNode tableScan = (TableScanNode) sourceNode;
SplitSource splitSource =
splitManager.getPartitionSplits(tableScan.getTable(), getPartitions(tableScan));
ImmutableSet.Builder<ScheduledSplit> scheduledSplits = ImmutableSet.builder();
while (!splitSource.isFinished()) {
try {
for (Split split : splitSource.getNextBatch(1000)) {
scheduledSplits.add(new ScheduledSplit(sequenceId++, split));
}
} catch (InterruptedException e) {
Thread.currentThread().interrupt();
throw Throwables.propagate(e);
}
}
sources.add(new TaskSource(tableScan.getId(), scheduledSplits.build(), true));
}
// create drivers
List<Driver> drivers = new ArrayList<>();
Map<PlanNodeId, Driver> driversBySource = new HashMap<>();
for (DriverFactory driverFactory : localExecutionPlan.getDriverFactories()) {
DriverContext driverContext =
taskContext
.addPipelineContext(driverFactory.isInputDriver(), driverFactory.isOutputDriver())
.addDriverContext();
Driver driver = driverFactory.createDriver(driverContext);
drivers.add(driver);
for (PlanNodeId sourceId : driver.getSourceIds()) {
driversBySource.put(sourceId, driver);
}
driverFactory.close();
}
// add sources to the drivers
for (TaskSource source : sources) {
for (Driver driver : driversBySource.values()) {
driver.updateSource(source);
}
}
return ImmutableList.copyOf(drivers);
}