| /* |
| * 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.api.common.operators.base; |
| |
| import org.apache.flink.api.common.ExecutionConfig; |
| import org.apache.flink.api.common.TaskInfo; |
| import org.apache.flink.api.common.functions.GroupReduceFunction; |
| import org.apache.flink.api.common.functions.RichGroupReduceFunction; |
| import org.apache.flink.api.common.functions.RuntimeContext; |
| import org.apache.flink.api.common.functions.util.RuntimeUDFContext; |
| import org.apache.flink.api.common.operators.UnaryOperatorInformation; |
| import org.apache.flink.api.common.operators.base.utils.TestAccumulatorRegistry; |
| import org.apache.flink.api.java.tuple.Tuple2; |
| import org.apache.flink.api.java.typeutils.TypeInfoParser; |
| import org.apache.flink.configuration.Configuration; |
| import org.apache.flink.core.fs.Path; |
| import org.apache.flink.metrics.groups.UnregisteredMetricsGroup; |
| import org.apache.flink.util.Collector; |
| |
| import org.junit.Test; |
| |
| import java.util.ArrayList; |
| import java.util.HashMap; |
| import java.util.HashSet; |
| import java.util.Iterator; |
| import java.util.List; |
| import java.util.Set; |
| import java.util.concurrent.Future; |
| import java.util.concurrent.atomic.AtomicBoolean; |
| |
| import static java.util.Arrays.asList; |
| import static org.junit.Assert.assertEquals; |
| import static org.junit.Assert.assertTrue; |
| import static org.junit.Assert.fail; |
| |
| /** |
| * Tests for {@link GroupReduceFunction}. |
| */ |
| @SuppressWarnings({"serial", "unchecked"}) |
| public class GroupReduceOperatorTest implements java.io.Serializable { |
| |
| @Test |
| public void testGroupReduceCollection() { |
| try { |
| final GroupReduceFunction<Tuple2<String, Integer>, Tuple2<String, |
| Integer>> reducer = new GroupReduceFunction<Tuple2<String, Integer>, |
| Tuple2<String, Integer>>() { |
| |
| @Override |
| public void reduce(Iterable<Tuple2<String, Integer>> values, |
| Collector<Tuple2<String, Integer>> out) throws Exception { |
| Iterator<Tuple2<String, Integer>> input = values.iterator(); |
| |
| Tuple2<String, Integer> result = input.next(); |
| int sum = result.f1; |
| while (input.hasNext()) { |
| Tuple2<String, Integer> next = input.next(); |
| sum += next.f1; |
| } |
| result.f1 = sum; |
| out.collect(result); |
| } |
| }; |
| |
| GroupReduceOperatorBase<Tuple2<String, Integer>, Tuple2<String, Integer>, |
| GroupReduceFunction<Tuple2<String, Integer>, Tuple2<String, |
| Integer>>> op = new GroupReduceOperatorBase<Tuple2<String, Integer>, |
| Tuple2<String, Integer>, GroupReduceFunction<Tuple2<String, Integer>, |
| Tuple2<String, Integer>>>(reducer, new UnaryOperatorInformation<Tuple2<String, |
| Integer>, Tuple2<String, Integer>>(TypeInfoParser.<Tuple2<String, |
| Integer>>parse("Tuple2<String, Integer>"), TypeInfoParser.<Tuple2<String, |
| Integer>>parse("Tuple2<String, Integer>")), new int[]{0}, "TestReducer"); |
| |
| List<Tuple2<String, Integer>> input = new ArrayList<Tuple2<String, |
| Integer>>(asList(new Tuple2<String, Integer>("foo", 1), new Tuple2<String, |
| Integer>("foo", 3), new Tuple2<String, Integer>("bar", 2), new Tuple2<String, |
| Integer>("bar", 4))); |
| |
| ExecutionConfig executionConfig = new ExecutionConfig(); |
| executionConfig.disableObjectReuse(); |
| List<Tuple2<String, Integer>> resultMutableSafe = op.executeOnCollections(input, null, executionConfig); |
| executionConfig.enableObjectReuse(); |
| List<Tuple2<String, Integer>> resultRegular = op.executeOnCollections(input, null, executionConfig); |
| |
| Set<Tuple2<String, Integer>> resultSetMutableSafe = new HashSet<Tuple2<String, Integer>>(resultMutableSafe); |
| Set<Tuple2<String, Integer>> resultSetRegular = new HashSet<Tuple2<String, Integer>>(resultRegular); |
| |
| Set<Tuple2<String, Integer>> expectedResult = new HashSet<Tuple2<String, |
| Integer>>(asList(new Tuple2<String, Integer>("foo", 4), new Tuple2<String, |
| Integer>("bar", 6))); |
| |
| assertEquals(expectedResult, resultSetMutableSafe); |
| assertEquals(expectedResult, resultSetRegular); |
| } |
| catch (Exception e) { |
| e.printStackTrace(); |
| fail(e.getMessage()); |
| } |
| } |
| |
| @Test |
| public void testGroupReduceCollectionWithRuntimeContext() { |
| try { |
| final String taskName = "Test Task"; |
| final AtomicBoolean opened = new AtomicBoolean(); |
| final AtomicBoolean closed = new AtomicBoolean(); |
| |
| final RichGroupReduceFunction<Tuple2<String, Integer>, Tuple2<String, |
| Integer>> reducer = new RichGroupReduceFunction<Tuple2<String, Integer>, |
| Tuple2<String, Integer>>() { |
| |
| @Override |
| public void reduce(Iterable<Tuple2<String, Integer>> values, |
| Collector<Tuple2<String, Integer>> out) throws Exception { |
| Iterator<Tuple2<String, Integer>> input = values.iterator(); |
| |
| Tuple2<String, Integer> result = input.next(); |
| int sum = result.f1; |
| while (input.hasNext()) { |
| Tuple2<String, Integer> next = input.next(); |
| sum += next.f1; |
| } |
| result.f1 = sum; |
| out.collect(result); |
| } |
| |
| @Override |
| public void open(Configuration parameters) throws Exception { |
| opened.set(true); |
| RuntimeContext ctx = getRuntimeContext(); |
| assertEquals(0, ctx.getIndexOfThisSubtask()); |
| assertEquals(1, ctx.getNumberOfParallelSubtasks()); |
| assertEquals(taskName, ctx.getTaskName()); |
| } |
| |
| @Override |
| public void close() throws Exception { |
| closed.set(true); |
| } |
| }; |
| |
| GroupReduceOperatorBase<Tuple2<String, Integer>, Tuple2<String, Integer>, |
| GroupReduceFunction<Tuple2<String, Integer>, Tuple2<String, |
| Integer>>> op = new GroupReduceOperatorBase<Tuple2<String, Integer>, |
| Tuple2<String, Integer>, GroupReduceFunction<Tuple2<String, Integer>, |
| Tuple2<String, Integer>>>(reducer, new UnaryOperatorInformation<Tuple2<String, |
| Integer>, Tuple2<String, Integer>>(TypeInfoParser.<Tuple2<String, |
| Integer>>parse("Tuple2<String, Integer>"), TypeInfoParser.<Tuple2<String, |
| Integer>>parse("Tuple2<String, Integer>")), new int[]{0}, "TestReducer"); |
| |
| List<Tuple2<String, Integer>> input = new ArrayList<Tuple2<String, |
| Integer>>(asList(new Tuple2<String, Integer>("foo", 1), new Tuple2<String, |
| Integer>("foo", 3), new Tuple2<String, Integer>("bar", 2), new Tuple2<String, |
| Integer>("bar", 4))); |
| |
| final TaskInfo taskInfo = new TaskInfo(taskName, 1, 0, 1, 0); |
| |
| ExecutionConfig executionConfig = new ExecutionConfig(); |
| executionConfig.disableObjectReuse(); |
| List<Tuple2<String, Integer>> resultMutableSafe = op.executeOnCollections(input, |
| new RuntimeUDFContext(taskInfo, null, executionConfig, |
| new HashMap<String, Future<Path>>(), |
| new TestAccumulatorRegistry(), |
| new UnregisteredMetricsGroup()), |
| executionConfig); |
| |
| executionConfig.enableObjectReuse(); |
| List<Tuple2<String, Integer>> resultRegular = op.executeOnCollections(input, |
| new RuntimeUDFContext(taskInfo, null, executionConfig, |
| new HashMap<String, Future<Path>>(), |
| new TestAccumulatorRegistry(), |
| new UnregisteredMetricsGroup()), |
| executionConfig); |
| |
| Set<Tuple2<String, Integer>> resultSetMutableSafe = new HashSet<Tuple2<String, Integer>>(resultMutableSafe); |
| Set<Tuple2<String, Integer>> resultSetRegular = new HashSet<Tuple2<String, Integer>>(resultRegular); |
| |
| Set<Tuple2<String, Integer>> expectedResult = new HashSet<Tuple2<String, |
| Integer>>(asList(new Tuple2<String, Integer>("foo", 4), new Tuple2<String, |
| Integer>("bar", 6))); |
| |
| assertEquals(expectedResult, resultSetMutableSafe); |
| assertEquals(expectedResult, resultSetRegular); |
| |
| assertTrue(opened.get()); |
| assertTrue(closed.get()); |
| } catch (Exception e) { |
| e.printStackTrace(); |
| fail(e.getMessage()); |
| } |
| } |
| } |