/**
* 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.hadoop.yarn.server.nodemanager;
import java.io.BufferedReader;
import java.io.BufferedWriter;
import java.io.File;
import java.io.FileReader;
import java.io.FileWriter;
import java.io.IOException;
import java.util.ArrayList;
import java.util.HashMap;
import java.util.List;
import java.util.Map;
import junit.framework.Assert;
import org.apache.hadoop.fs.FileContext;
import org.apache.hadoop.fs.Path;
import org.apache.hadoop.fs.UnsupportedFileSystemException;
import org.apache.hadoop.yarn.api.protocolrecords.GetContainerStatusRequest;
import org.apache.hadoop.yarn.api.protocolrecords.StartContainerRequest;
import org.apache.hadoop.yarn.api.records.ApplicationAttemptId;
import org.apache.hadoop.yarn.api.records.ApplicationId;
import org.apache.hadoop.yarn.api.records.ContainerId;
import org.apache.hadoop.yarn.api.records.ContainerLaunchContext;
import org.apache.hadoop.yarn.api.records.ContainerState;
import org.apache.hadoop.yarn.api.records.ContainerStatus;
import org.apache.hadoop.yarn.api.records.LocalResource;
import org.apache.hadoop.yarn.api.records.LocalResourceType;
import org.apache.hadoop.yarn.api.records.LocalResourceVisibility;
import org.apache.hadoop.yarn.api.records.Resource;
import org.apache.hadoop.yarn.api.records.URL;
import org.apache.hadoop.yarn.conf.YarnConfiguration;
import org.apache.hadoop.yarn.event.Dispatcher;
import org.apache.hadoop.yarn.factories.RecordFactory;
import org.apache.hadoop.yarn.factory.providers.RecordFactoryProvider;
import org.apache.hadoop.yarn.server.nodemanager.containermanager.ContainerManagerImpl;
import org.apache.hadoop.yarn.util.ConverterUtils;
import org.junit.After;
import org.junit.Before;
import org.junit.Test;
public class TestNodeManagerShutdown {
static final File basedir =
new File("target", TestNodeManagerShutdown.class.getName());
static final File tmpDir = new File(basedir, "tmpDir");
static final File logsDir = new File(basedir, "logs");
static final File remoteLogsDir = new File(basedir, "remotelogs");
static final File nmLocalDir = new File(basedir, "nm0");
static final File processStartFile = new File(tmpDir, "start_file.txt")
.getAbsoluteFile();
static final RecordFactory recordFactory = RecordFactoryProvider
.getRecordFactory(null);
static final String user = "nobody";
private FileContext localFS;
@Before
public void setup() throws UnsupportedFileSystemException {
localFS = FileContext.getLocalFSFileContext();
tmpDir.mkdirs();
logsDir.mkdirs();
remoteLogsDir.mkdirs();
nmLocalDir.mkdirs();
}
@After
public void tearDown() throws IOException, InterruptedException {
localFS.delete(new Path(basedir.getPath()), true);
}
@Test
public void testKillContainersOnShutdown() throws IOException {
NodeManager nm = getNodeManager();
nm.init(createNMConfig());
nm.start();
ContainerManagerImpl containerManager = nm.getContainerManager();
File scriptFile = createUnhaltingScriptFile();
ContainerLaunchContext containerLaunchContext =
recordFactory.newRecordInstance(ContainerLaunchContext.class);
// Construct the Container-id
ContainerId cId = createContainerId();
containerLaunchContext.setContainerId(cId);
containerLaunchContext.setUser(user);
URL localResourceUri =
ConverterUtils.getYarnUrlFromPath(localFS
.makeQualified(new Path(scriptFile.getAbsolutePath())));
LocalResource localResource =
recordFactory.newRecordInstance(LocalResource.class);
localResource.setResource(localResourceUri);
localResource.setSize(-1);
localResource.setVisibility(LocalResourceVisibility.APPLICATION);
localResource.setType(LocalResourceType.FILE);
localResource.setTimestamp(scriptFile.lastModified());
String destinationFile = "dest_file";
Map<String, LocalResource> localResources =
new HashMap<String, LocalResource>();
localResources.put(destinationFile, localResource);
containerLaunchContext.setLocalResources(localResources);
containerLaunchContext.setUser(containerLaunchContext.getUser());
List<String> commands = new ArrayList<String>();
commands.add("/bin/bash");
commands.add(scriptFile.getAbsolutePath());
containerLaunchContext.setCommands(commands);
containerLaunchContext.setResource(recordFactory
.newRecordInstance(Resource.class));
containerLaunchContext.getResource().setMemory(1024);
StartContainerRequest startRequest = recordFactory.newRecordInstance(StartContainerRequest.class);
startRequest.setContainerLaunchContext(containerLaunchContext);
containerManager.startContainer(startRequest);
GetContainerStatusRequest request =
recordFactory.newRecordInstance(GetContainerStatusRequest.class);
request.setContainerId(cId);
ContainerStatus containerStatus =
containerManager.getContainerStatus(request).getStatus();
Assert.assertEquals(ContainerState.RUNNING, containerStatus.getState());
try {Thread.sleep(5000);} catch (InterruptedException ex) {ex.printStackTrace();}
nm.stop();
// Now verify the contents of the file
// Script generates a message when it receives a sigterm
// so we look for that
BufferedReader reader =
new BufferedReader(new FileReader(processStartFile));
boolean foundSigTermMessage = false;
while (true) {
String line = reader.readLine();
if (line == null) {
break;
}
if (line.contains("SIGTERM")) {
foundSigTermMessage = true;
break;
}
}
Assert.assertTrue("Did not find sigterm message", foundSigTermMessage);
reader.close();
}
private ContainerId createContainerId() {
ApplicationId appId = recordFactory.newRecordInstance(ApplicationId.class);
appId.setClusterTimestamp(0);
appId.setId(0);
ApplicationAttemptId appAttemptId =
recordFactory.newRecordInstance(ApplicationAttemptId.class);
appAttemptId.setApplicationId(appId);
appAttemptId.setAttemptId(1);
ContainerId containerId =
recordFactory.newRecordInstance(ContainerId.class);
containerId.setApplicationAttemptId(appAttemptId);
return containerId;
}
private YarnConfiguration createNMConfig() {
YarnConfiguration conf = new YarnConfiguration();
conf.setInt(YarnConfiguration.NM_PMEM_MB, 5*1024); // 5GB
conf.set(YarnConfiguration.NM_ADDRESS, "127.0.0.1:12345");
conf.set(YarnConfiguration.NM_LOCALIZER_ADDRESS, "127.0.0.1:12346");
conf.set(YarnConfiguration.NM_LOG_DIRS, logsDir.getAbsolutePath());
conf.set(YarnConfiguration.NM_REMOTE_APP_LOG_DIR, remoteLogsDir.getAbsolutePath());
conf.set(YarnConfiguration.NM_LOCAL_DIRS, nmLocalDir.getAbsolutePath());
return conf;
}
/**
* Creates a script to run a container that will run forever unless
* stopped by external means.
*/
private File createUnhaltingScriptFile() throws IOException {
File scriptFile = new File(tmpDir, "scriptFile.sh");
BufferedWriter fileWriter = new BufferedWriter(new FileWriter(scriptFile));
fileWriter.write("#!/bin/bash\n\n");
fileWriter.write("echo \"Running testscript for delayed kill\"\n");
fileWriter.write("hello=\"Got SIGTERM\"\n");
fileWriter.write("umask 0\n");
fileWriter.write("trap \"echo $hello >> " + processStartFile + "\" SIGTERM\n");
fileWriter.write("echo \"Writing pid to start file\"\n");
fileWriter.write("echo $$ >> " + processStartFile + "\n");
fileWriter.write("while true; do\nsleep 1s;\ndone\n");
fileWriter.close();
return scriptFile;
}
private NodeManager getNodeManager() {
return new NodeManager() {
@Override
protected NodeStatusUpdater createNodeStatusUpdater(Context context,
Dispatcher dispatcher, NodeHealthCheckerService healthChecker) {
MockNodeStatusUpdater myNodeStatusUpdater = new MockNodeStatusUpdater(
context, dispatcher, healthChecker, metrics);
return myNodeStatusUpdater;
}
};
}
}