/*
* 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.test.iterative;
import static org.junit.Assert.*;
import java.util.ArrayList;
import java.util.List;
import org.apache.flink.api.common.functions.MapFunction;
import org.apache.flink.api.common.functions.RichMapFunction;
import org.apache.flink.api.java.DataSet;
import org.apache.flink.api.java.ExecutionEnvironment;
import org.apache.flink.api.java.io.LocalCollectionOutputFormat;
import org.apache.flink.api.java.operators.DeltaIteration;
import org.apache.flink.api.java.tuple.Tuple2;
import org.junit.Test;
@SuppressWarnings("serial")
public class DeltaIterationNotDependingOnSolutionSetITCase {
@Test
public void testDeltaIterationNotDependingOnSolutionSet() {
try {
final List<Tuple2<Long, Long>> result = new ArrayList<Tuple2<Long,Long>>();
ExecutionEnvironment env = ExecutionEnvironment.getExecutionEnvironment();
env.setDegreeOfParallelism(1);
DataSet<Tuple2<Long, Long>> input = env.generateSequence(0, 9).map(new Duplicator<Long>());
DeltaIteration<Tuple2<Long, Long>, Tuple2<Long, Long>> iteration = input.iterateDelta(input, 5, 1);
iteration.closeWith(iteration.getWorkset(), iteration.getWorkset().map(new TestMapper()))
.output(new LocalCollectionOutputFormat<Tuple2<Long,Long>>(result));
env.execute();
boolean[] present = new boolean[50];
for (Tuple2<Long, Long> t : result) {
present[t.f0.intValue()] = true;
}
for (int i = 0; i < present.length; i++) {
assertTrue(String.format("Missing tuple (%d, %d)", i, i), present[i]);
}
}
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 extends RichMapFunction<Tuple2<Long, Long>, Tuple2<Long, Long>> {
@Override
public Tuple2<Long, Long> map(Tuple2<Long, Long> value) {
return new Tuple2<Long, Long>(value.f0+10, value.f1+10);
}
}
}