| /* |
| * 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.operators; |
| |
| import org.apache.flink.api.common.functions.RichMapPartitionFunction; |
| import org.apache.flink.api.common.io.GenericInputFormat; |
| import org.apache.flink.api.java.DataSet; |
| import org.apache.flink.api.java.ExecutionEnvironment; |
| import org.apache.flink.configuration.Configuration; |
| import org.apache.flink.configuration.TaskManagerOptions; |
| import org.apache.flink.core.io.GenericInputSplit; |
| import org.apache.flink.util.Collector; |
| import org.apache.flink.util.TestLogger; |
| |
| import org.junit.Test; |
| |
| import java.io.IOException; |
| import java.util.List; |
| |
| import static org.junit.Assert.assertEquals; |
| |
| /** Test ExecutionEnvironment from user perspective. */ |
| @SuppressWarnings("serial") |
| public class ExecutionEnvironmentITCase extends TestLogger { |
| |
| private static final int PARALLELISM = 5; |
| |
| /** Ensure that the user can pass a custom configuration object to the LocalEnvironment. */ |
| @Test |
| public void testLocalEnvironmentWithConfig() throws Exception { |
| Configuration conf = new Configuration(); |
| conf.setInteger(TaskManagerOptions.NUM_TASK_SLOTS, PARALLELISM); |
| |
| final ExecutionEnvironment env = ExecutionEnvironment.createLocalEnvironment(conf); |
| |
| DataSet<Integer> result = |
| env.createInput(new ParallelismDependentInputFormat()) |
| .rebalance() |
| .mapPartition( |
| new RichMapPartitionFunction<Integer, Integer>() { |
| @Override |
| public void mapPartition( |
| Iterable<Integer> values, Collector<Integer> out) |
| throws Exception { |
| out.collect(getRuntimeContext().getIndexOfThisSubtask()); |
| } |
| }); |
| List<Integer> resultCollection = result.collect(); |
| assertEquals(PARALLELISM, resultCollection.size()); |
| } |
| |
| private static class ParallelismDependentInputFormat extends GenericInputFormat<Integer> { |
| |
| private transient boolean emitted; |
| |
| @Override |
| public GenericInputSplit[] createInputSplits(int numSplits) throws IOException { |
| assertEquals(PARALLELISM, numSplits); |
| return super.createInputSplits(numSplits); |
| } |
| |
| @Override |
| public boolean reachedEnd() { |
| return emitted; |
| } |
| |
| @Override |
| public Integer nextRecord(Integer reuse) { |
| if (emitted) { |
| return null; |
| } |
| emitted = true; |
| return 1; |
| } |
| } |
| } |