/*
* 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.runtime.operators.chaining;
import java.util.ArrayList;
import java.util.List;
import org.apache.flink.api.common.functions.GenericCollectorMap;
import org.apache.flink.api.common.operators.util.UserCodeClassWrapper;
import org.apache.flink.api.common.typeutils.record.RecordComparatorFactory;
import org.apache.flink.api.common.typeutils.record.RecordSerializerFactory;
import org.apache.flink.api.common.functions.RichGroupReduceFunction;
import org.apache.flink.configuration.Configuration;
import org.apache.flink.runtime.operators.CollectorMapDriver;
import org.apache.flink.runtime.operators.DriverStrategy;
import org.apache.flink.runtime.operators.RegularPactTask;
import org.apache.flink.runtime.operators.MapTaskTest.MockMapStub;
import org.apache.flink.runtime.operators.ReduceTaskTest.MockReduceStub;
import org.apache.flink.runtime.operators.shipping.ShipStrategyType;
import org.apache.flink.runtime.operators.testutils.TaskTestBase;
import org.apache.flink.runtime.operators.testutils.UniformRecordGenerator;
import org.apache.flink.runtime.operators.util.TaskConfig;
import org.apache.flink.types.IntValue;
import org.apache.flink.types.Record;
import org.apache.flink.util.Collector;
import org.junit.Assert;
import org.junit.Test;
@SuppressWarnings("deprecation")
public class ChainTaskTest extends TaskTestBase {
private static final int MEMORY_MANAGER_SIZE = 1024 * 1024 * 3;
private static final int NETWORK_BUFFER_SIZE = 1024;
private final List<Record> outList = new ArrayList<Record>();
@SuppressWarnings("unchecked")
private final RecordComparatorFactory compFact = new RecordComparatorFactory(new int[]{0}, new Class[]{IntValue.class}, new boolean[] {true});
private final RecordSerializerFactory serFact = RecordSerializerFactory.get();
@Test
public void testMapTask() {
final int keyCnt = 100;
final int valCnt = 20;
final double memoryFraction = 1.0;
try {
// environment
initEnvironment(MEMORY_MANAGER_SIZE, NETWORK_BUFFER_SIZE);
addInput(new UniformRecordGenerator(keyCnt, valCnt, false), 0);
addOutput(this.outList);
// chained combine config
{
final TaskConfig combineConfig = new TaskConfig(new Configuration());
// input
combineConfig.addInputToGroup(0);
combineConfig.setInputSerializer(serFact, 0);
// output
combineConfig.addOutputShipStrategy(ShipStrategyType.FORWARD);
combineConfig.setOutputSerializer(serFact);
// driver
combineConfig.setDriverStrategy(DriverStrategy.SORTED_GROUP_COMBINE);
combineConfig.setDriverComparator(compFact, 0);
combineConfig.setDriverComparator(compFact, 1);
combineConfig.setRelativeMemoryDriver(memoryFraction);
// udf
combineConfig.setStubWrapper(new UserCodeClassWrapper<MockReduceStub>(MockReduceStub.class));
getTaskConfig().addChainedTask(SynchronousChainedCombineDriver.class, combineConfig, "combine");
}
// chained map+combine
{
RegularPactTask<GenericCollectorMap<Record, Record>, Record> testTask =
new RegularPactTask<GenericCollectorMap<Record, Record>, Record>();
registerTask(testTask, CollectorMapDriver.class, MockMapStub.class);
try {
testTask.invoke();
} catch (Exception e) {
e.printStackTrace();
Assert.fail("Invoke method caused exception.");
}
}
Assert.assertEquals(keyCnt, this.outList.size());
}
catch (Exception e) {
e.printStackTrace();
Assert.fail(e.getMessage());
}
}
@Test
public void testFailingMapTask() {
int keyCnt = 100;
int valCnt = 20;
final long memorySize = 1024 * 1024 * 3;
final int bufferSize = 1014*1024;
final double memoryFraction = 1.0;
try {
// environment
initEnvironment(memorySize, bufferSize);
addInput(new UniformRecordGenerator(keyCnt, valCnt, false), 0);
addOutput(this.outList);
// chained combine config
{
final TaskConfig combineConfig = new TaskConfig(new Configuration());
// input
combineConfig.addInputToGroup(0);
combineConfig.setInputSerializer(serFact, 0);
// output
combineConfig.addOutputShipStrategy(ShipStrategyType.FORWARD);
combineConfig.setOutputSerializer(serFact);
// driver
combineConfig.setDriverStrategy(DriverStrategy.SORTED_GROUP_COMBINE);
combineConfig.setDriverComparator(compFact, 0);
combineConfig.setRelativeMemoryDriver(memoryFraction);
// udf
combineConfig.setStubWrapper(new UserCodeClassWrapper<MockFailingCombineStub>(MockFailingCombineStub.class));
getTaskConfig().addChainedTask(SynchronousChainedCombineDriver.class, combineConfig, "combine");
}
// chained map+combine
{
final RegularPactTask<GenericCollectorMap<Record, Record>, Record> testTask =
new RegularPactTask<GenericCollectorMap<Record, Record>, Record>();
super.registerTask(testTask, CollectorMapDriver.class, MockMapStub.class);
boolean stubFailed = false;
try {
testTask.invoke();
} catch (Exception e) {
stubFailed = true;
}
Assert.assertTrue("Function exception was not forwarded.", stubFailed);
}
}
catch (Exception e) {
e.printStackTrace();
Assert.fail(e.getMessage());
}
}
public static final class MockFailingCombineStub extends RichGroupReduceFunction<Record, Record> {
private static final long serialVersionUID = 1L;
private int cnt = 0;
@Override
public void reduce(Iterable<Record> records, Collector<Record> out) throws Exception {
if (++this.cnt >= 5) {
throw new RuntimeException("Expected Test Exception");
}
for (Record r : records) {
out.collect(r);
}
}
}
}