Examples with CostComparator com.facebook.presto.cost.CostComparator used on opensource projects

Example 6 with CostComparator

use of com.facebook.presto.cost.CostComparator in project presto by prestodb.

the class TestJoinEnumerator method testDoesNotCreateJoinWhenPartitionedOnCrossJoin.

@Test
public void testDoesNotCreateJoinWhenPartitionedOnCrossJoin() {
    PlanNodeIdAllocator idAllocator = new PlanNodeIdAllocator();
    PlanBuilder p = new PlanBuilder(TEST_SESSION, idAllocator, queryRunner.getMetadata());
    VariableReferenceExpression a1 = p.variable("A1");
    VariableReferenceExpression b1 = p.variable("B1");
    MultiJoinNode multiJoinNode = new MultiJoinNode(new LinkedHashSet<>(ImmutableList.of(p.values(a1), p.values(b1))), TRUE_CONSTANT, ImmutableList.of(a1, b1));
    JoinEnumerator joinEnumerator = new JoinEnumerator(new CostComparator(1, 1, 1), multiJoinNode.getFilter(), createContext(), determinismEvaluator, functionResolution, metadata);
    JoinEnumerationResult actual = joinEnumerator.createJoinAccordingToPartitioning(multiJoinNode.getSources(), multiJoinNode.getOutputVariables(), ImmutableSet.of(0));
    assertFalse(actual.getPlanNode().isPresent());
    assertEquals(actual.getCost(), PlanCostEstimate.infinite());
}

Example 7 with CostComparator

use of com.facebook.presto.cost.CostComparator in project presto by prestodb.

the class AbstractTestQueryFramework method getQueryExplainer.

private QueryExplainer getQueryExplainer() {
    Metadata metadata = queryRunner.getMetadata();
    FeaturesConfig featuresConfig = new FeaturesConfig().setOptimizeHashGeneration(true);
    boolean forceSingleNode = queryRunner.getNodeCount() == 1;
    TaskCountEstimator taskCountEstimator = new TaskCountEstimator(queryRunner::getNodeCount);
    CostCalculator costCalculator = new CostCalculatorUsingExchanges(taskCountEstimator);
    List<PlanOptimizer> optimizers = new PlanOptimizers(metadata, sqlParser, forceSingleNode, new MBeanExporter(new TestingMBeanServer()), queryRunner.getSplitManager(), queryRunner.getPlanOptimizerManager(), queryRunner.getPageSourceManager(), queryRunner.getStatsCalculator(), costCalculator, new CostCalculatorWithEstimatedExchanges(costCalculator, taskCountEstimator), new CostComparator(featuresConfig), taskCountEstimator, new PartitioningProviderManager()).getPlanningTimeOptimizers();
    return new QueryExplainer(optimizers, new PlanFragmenter(metadata, queryRunner.getNodePartitioningManager(), new QueryManagerConfig(), sqlParser, new FeaturesConfig()), metadata, queryRunner.getAccessControl(), sqlParser, queryRunner.getStatsCalculator(), costCalculator, ImmutableMap.of(), new PlanChecker(new FeaturesConfig(), false));
}