/*
* Licensed to the Apache Software Foundation (ASF) under one
* or more contributor license agreements. See the NOTICE file
* distributed with this work for additional information
* regarding copyright ownership. The ASF licenses this file
* to you under the Apache License, Version 2.0 (the
* "License"); you may not use this file except in compliance
* with the License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package org.apache.flink.compiler;
import org.apache.flink.api.common.functions.RichCoGroupFunction;
import org.apache.flink.api.common.functions.RichMapFunction;
import org.junit.Assert;
import org.junit.Test;
import org.apache.flink.api.common.Plan;
import org.apache.flink.api.java.DataSet;
import org.apache.flink.api.java.operators.DeltaIteration;
import org.apache.flink.api.java.ExecutionEnvironment;
import org.apache.flink.api.java.tuple.Tuple1;
import org.apache.flink.compiler.plan.Channel;
import org.apache.flink.compiler.plan.DualInputPlanNode;
import org.apache.flink.compiler.plan.OptimizedPlan;
import org.apache.flink.compiler.plan.PlanNode;
import org.apache.flink.compiler.plan.WorksetIterationPlanNode;
import org.apache.flink.runtime.operators.shipping.ShipStrategyType;
import org.apache.flink.util.Collector;
import org.apache.flink.util.Visitor;
@SuppressWarnings("serial")
public class CoGroupSolutionSetFirstTest extends CompilerTestBase {
public static class SimpleCGroup extends RichCoGroupFunction<Tuple1<Integer>, Tuple1<Integer>, Tuple1<Integer>> {
@Override
public void coGroup(Iterable<Tuple1<Integer>> first, Iterable<Tuple1<Integer>> second, Collector<Tuple1<Integer>> out) {}
}
public static class SimpleMap extends RichMapFunction<Tuple1<Integer>, Tuple1<Integer>> {
@Override
public Tuple1<Integer> map(Tuple1<Integer> value) throws Exception {
return null;
}
}
@Test
public void testCoGroupSolutionSet() {
ExecutionEnvironment env = ExecutionEnvironment.getExecutionEnvironment();
DataSet<Tuple1<Integer>> raw = env.readCsvFile(IN_FILE).types(Integer.class);
DeltaIteration<Tuple1<Integer>, Tuple1<Integer>> iteration = raw.iterateDelta(raw, 1000, 0);
DataSet<Tuple1<Integer>> test = iteration.getWorkset().map(new SimpleMap());
DataSet<Tuple1<Integer>> delta = iteration.getSolutionSet().coGroup(test).where(0).equalTo(0).with(new SimpleCGroup());
DataSet<Tuple1<Integer>> feedback = iteration.getWorkset().map(new SimpleMap());
DataSet<Tuple1<Integer>> result = iteration.closeWith(delta, feedback);
result.print();
Plan plan = env.createProgramPlan();
OptimizedPlan oPlan = null;
try {
oPlan = compileNoStats(plan);
} catch(CompilerException e) {
Assert.fail(e.getMessage());
}
oPlan.accept(new Visitor<PlanNode>() {
@Override
public boolean preVisit(PlanNode visitable) {
if (visitable instanceof WorksetIterationPlanNode) {
PlanNode deltaNode = ((WorksetIterationPlanNode) visitable).getSolutionSetDeltaPlanNode();
//get the CoGroup
DualInputPlanNode dpn = (DualInputPlanNode) deltaNode.getInputs().iterator().next().getSource();
Channel in1 = dpn.getInput1();
Channel in2 = dpn.getInput2();
Assert.assertTrue(in1.getLocalProperties().getOrdering() == null);
Assert.assertTrue(in2.getLocalProperties().getOrdering() != null);
Assert.assertTrue(in2.getLocalProperties().getOrdering().getInvolvedIndexes().contains(0));
Assert.assertTrue(in1.getShipStrategy() == ShipStrategyType.FORWARD);
Assert.assertTrue(in2.getShipStrategy() == ShipStrategyType.PARTITION_HASH);
return false;
}
return true;
}
@Override
public void postVisit(PlanNode visitable) {}
});
}
}