Examples with DualInputPlanNode org.apache.flink.optimizer.plan.DualInputPlanNode used on opensource projects

Example 96 with DualInputPlanNode

use of org.apache.flink.optimizer.plan.DualInputPlanNode in project flink by apache.

the class RelationalQueryCompilerTest method testQueryNoStatistics.

// ------------------------------------------------------------------------
/**
	 * Verifies that a robust repartitioning plan with a hash join is created in the absence of statistics.
	 */
@Test
public void testQueryNoStatistics() {
    try {
        Plan p = getTPCH3Plan();
        p.setExecutionConfig(defaultExecutionConfig);
        // compile
        final OptimizedPlan plan = compileNoStats(p);
        final OptimizerPlanNodeResolver or = getOptimizerPlanNodeResolver(plan);
        // get the nodes from the final plan
        final SinkPlanNode sink = or.getNode(SINK);
        final SingleInputPlanNode reducer = or.getNode(REDUCE_NAME);
        final SingleInputPlanNode combiner = reducer.getPredecessor() instanceof SingleInputPlanNode ? (SingleInputPlanNode) reducer.getPredecessor() : null;
        final DualInputPlanNode join = or.getNode(JOIN_NAME);
        final SingleInputPlanNode filteringMapper = or.getNode(MAPPER_NAME);
        // verify the optimizer choices
        checkStandardStrategies(filteringMapper, join, combiner, reducer, sink);
        Assert.assertTrue(checkRepartitionShipStrategies(join, reducer, combiner));
        Assert.assertTrue(checkHashJoinStrategies(join, reducer, true) || checkHashJoinStrategies(join, reducer, false));
    } catch (Exception e) {
        e.printStackTrace();
        Assert.fail(e.getMessage());
    }
}