| /* |
| * 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.cancelling; |
| |
| import org.apache.flink.api.common.functions.MapFunction; |
| import org.apache.flink.api.common.functions.RichMapFunction; |
| import org.apache.flink.api.java.ExecutionEnvironment; |
| import org.apache.flink.api.java.io.DiscardingOutputFormat; |
| import org.apache.flink.configuration.Configuration; |
| import org.apache.flink.test.util.InfiniteIntegerInputFormat; |
| |
| import org.junit.Test; |
| |
| /** Test job cancellation from within a MapFunction. */ |
| public class MapCancelingITCase extends CancelingTestBase { |
| |
| @Test |
| public void testMapCancelling() throws Exception { |
| executeTask(new IdentityMapper<Integer>()); |
| } |
| |
| @Test |
| public void testSlowMapCancelling() throws Exception { |
| executeTask(new DelayingIdentityMapper<Integer>()); |
| } |
| |
| @Test |
| public void testMapWithLongCancellingResponse() throws Exception { |
| executeTask(new LongCancelTimeIdentityMapper<Integer>()); |
| } |
| |
| @Test |
| public void testMapPriorToFirstRecordReading() throws Exception { |
| executeTask(new StuckInOpenIdentityMapper<Integer>()); |
| } |
| |
| public void executeTask(MapFunction<Integer, Integer> mapper) throws Exception { |
| ExecutionEnvironment env = ExecutionEnvironment.getExecutionEnvironment(); |
| |
| env.createInput(new InfiniteIntegerInputFormat(false)) |
| .map(mapper) |
| .output(new DiscardingOutputFormat<Integer>()); |
| |
| env.setParallelism(PARALLELISM); |
| |
| runAndCancelJob(env.createProgramPlan(), 5 * 1000, 10 * 1000); |
| } |
| |
| // -------------------------------------------------------------------------------------------- |
| |
| private static final class IdentityMapper<IN> implements MapFunction<IN, IN> { |
| private static final long serialVersionUID = 1L; |
| |
| @Override |
| public IN map(IN value) throws Exception { |
| return value; |
| } |
| } |
| |
| private static final class DelayingIdentityMapper<IN> implements MapFunction<IN, IN> { |
| private static final long serialVersionUID = 1L; |
| |
| private static final int WAIT_TIME_PER_VALUE = 10 * 1000; // 10 sec. |
| |
| @Override |
| public IN map(IN value) throws Exception { |
| Thread.sleep(WAIT_TIME_PER_VALUE); |
| return value; |
| } |
| } |
| |
| private static final class LongCancelTimeIdentityMapper<IN> implements MapFunction<IN, IN> { |
| private static final long serialVersionUID = 1L; |
| |
| private static final int WAIT_TIME_PER_VALUE = 5 * 1000; // 5 sec. |
| |
| @Override |
| public IN map(IN value) throws Exception { |
| final long start = System.currentTimeMillis(); |
| long remaining = WAIT_TIME_PER_VALUE; |
| do { |
| try { |
| Thread.sleep(remaining); |
| } catch (InterruptedException iex) { |
| } |
| } while ((remaining = WAIT_TIME_PER_VALUE - System.currentTimeMillis() + start) > 0); |
| |
| return value; |
| } |
| } |
| |
| private static final class StuckInOpenIdentityMapper<IN> extends RichMapFunction<IN, IN> { |
| private static final long serialVersionUID = 1L; |
| |
| @Override |
| public void open(Configuration parameters) throws Exception { |
| synchronized (this) { |
| wait(); |
| } |
| } |
| |
| @Override |
| public IN map(IN value) throws Exception { |
| return value; |
| } |
| } |
| } |