/*
* 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.twill.yarn;
import com.google.common.base.Throwables;
import com.google.common.util.concurrent.Service;
import org.apache.twill.api.AbstractTwillRunnable;
import org.apache.twill.api.ResourceSpecification;
import org.apache.twill.api.TwillController;
import org.apache.twill.api.TwillRunner;
import org.apache.twill.api.logging.PrinterLogHandler;
import org.apache.twill.common.ServiceListenerAdapter;
import org.apache.twill.common.Threads;
import org.junit.Assert;
import org.junit.Test;
import java.io.PrintWriter;
import java.util.Random;
import java.util.concurrent.CountDownLatch;
import java.util.concurrent.TimeUnit;
/**
* Testing application master will shutdown itself when all tasks are completed.
* This test is executed by {@link YarnTestSuite}.
*/
public final class TaskCompletedTestRun extends BaseYarnTest {
/**
* A {@link AbstractTwillRunnable} that sleeps randomly and finish.
*/
public static final class SleepTask extends AbstractTwillRunnable {
@Override
public void run() {
// Randomly sleep for 3-5 seconds.
try {
TimeUnit.SECONDS.sleep(new Random().nextInt(3) + 3);
} catch (InterruptedException e) {
throw Throwables.propagate(e);
}
}
@Override
public void stop() {
// No-op
}
}
@Test
public void testTaskCompleted() throws InterruptedException {
TwillRunner twillRunner = YarnTestUtils.getTwillRunner();
TwillController controller = twillRunner.prepare(new SleepTask(),
ResourceSpecification.Builder.with()
.setVirtualCores(1)
.setMemory(512, ResourceSpecification.SizeUnit.MEGA)
.setInstances(3).build())
.addLogHandler(new PrinterLogHandler(new PrintWriter(System.out, true)))
.start();
final CountDownLatch runLatch = new CountDownLatch(1);
final CountDownLatch stopLatch = new CountDownLatch(1);
controller.addListener(new ServiceListenerAdapter() {
@Override
public void running() {
runLatch.countDown();
}
@Override
public void terminated(Service.State from) {
stopLatch.countDown();
}
}, Threads.SAME_THREAD_EXECUTOR);
Assert.assertTrue(runLatch.await(1, TimeUnit.MINUTES));
Assert.assertTrue(stopLatch.await(1, TimeUnit.MINUTES));
TimeUnit.SECONDS.sleep(2);
}
}