/*
* 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 static org.junit.Assert.*;
import org.apache.flink.api.common.Plan;
import org.apache.flink.api.common.functions.MapFunction;
import org.apache.flink.api.java.DataSet;
import org.apache.flink.api.java.ExecutionEnvironment;
import org.apache.flink.api.java.operators.DeltaIteration;
import org.apache.flink.api.java.tuple.Tuple2;
import org.apache.flink.compiler.plan.OptimizedPlan;
import org.apache.flink.compiler.plan.WorksetIterationPlanNode;
import org.apache.flink.compiler.plantranslate.NepheleJobGraphGenerator;
import org.junit.Test;
@SuppressWarnings("serial")
public class WorksetIterationCornerCasesTest extends CompilerTestBase {
@Test
public void testWorksetIterationNotDependingOnSolutionSet() {
try {
ExecutionEnvironment env = ExecutionEnvironment.getExecutionEnvironment();
DataSet<Tuple2<Long, Long>> input = env.generateSequence(1, 100).map(new Duplicator<Long>());
DeltaIteration<Tuple2<Long, Long>, Tuple2<Long, Long>> iteration = input.iterateDelta(input, 100, 1);
DataSet<Tuple2<Long, Long>> iterEnd = iteration.getWorkset().map(new TestMapper<Tuple2<Long,Long>>());
iteration.closeWith(iterEnd, iterEnd).print();
Plan p = env.createProgramPlan();
OptimizedPlan op = compileNoStats(p);
WorksetIterationPlanNode wipn = (WorksetIterationPlanNode) op.getDataSinks().iterator().next().getInput().getSource();
assertTrue(wipn.getSolutionSetPlanNode().getOutgoingChannels().isEmpty());
NepheleJobGraphGenerator jgg = new NepheleJobGraphGenerator();
jgg.compileJobGraph(op);
}
catch (Exception e) {
e.printStackTrace();
fail(e.getMessage());
}
}
private static final class Duplicator<T> implements MapFunction<T, Tuple2<T, T>> {
@Override
public Tuple2<T, T> map(T value) {
return new Tuple2<T, T>(value, value);
}
}
private static final class TestMapper<T> implements MapFunction<T, T> {
@Override
public T map(T value) {
return value;
}
}
}