/**
* 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.mapreduce.v2.hs;
import java.io.IOException;
import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;
import org.apache.hadoop.classification.InterfaceAudience.Private;
import org.apache.hadoop.conf.Configuration;
import org.apache.hadoop.mapred.JobConf;
import org.apache.hadoop.mapreduce.MRConfig;
import org.apache.hadoop.mapreduce.v2.jobhistory.JHAdminConfig;
import org.apache.hadoop.security.SecurityUtil;
import org.apache.hadoop.util.ShutdownHookManager;
import org.apache.hadoop.util.StringUtils;
import org.apache.hadoop.yarn.YarnException;
import org.apache.hadoop.yarn.YarnUncaughtExceptionHandler;
import org.apache.hadoop.yarn.conf.YarnConfiguration;
import org.apache.hadoop.yarn.event.Dispatcher;
import org.apache.hadoop.yarn.logaggregation.AggregatedLogDeletionService;
import org.apache.hadoop.yarn.service.CompositeService;
/******************************************************************
* {@link JobHistoryServer} is responsible for servicing all job history
* related requests from client.
*
*****************************************************************/
public class JobHistoryServer extends CompositeService {
/**
* Priority of the JobHistoryServer shutdown hook.
*/
public static final int SHUTDOWN_HOOK_PRIORITY = 30;
private static final Log LOG = LogFactory.getLog(JobHistoryServer.class);
private HistoryContext historyContext;
private HistoryClientService clientService;
private JobHistory jobHistoryService;
private JHSDelegationTokenSecretManager jhsDTSecretManager;
private AggregatedLogDeletionService aggLogDelService;
public JobHistoryServer() {
super(JobHistoryServer.class.getName());
}
@Override
public synchronized void init(Configuration conf) {
Configuration config = new YarnConfiguration(conf);
config.setBoolean(Dispatcher.DISPATCHER_EXIT_ON_ERROR_KEY, true);
try {
doSecureLogin(conf);
} catch(IOException ie) {
throw new YarnException("History Server Failed to login", ie);
}
jobHistoryService = new JobHistory();
historyContext = (HistoryContext)jobHistoryService;
this.jhsDTSecretManager = createJHSSecretManager(conf);
clientService = new HistoryClientService(historyContext,
this.jhsDTSecretManager);
aggLogDelService = new AggregatedLogDeletionService();
addService(jobHistoryService);
addService(clientService);
addService(aggLogDelService);
super.init(config);
}
protected JHSDelegationTokenSecretManager createJHSSecretManager(
Configuration conf) {
long secretKeyInterval =
conf.getLong(MRConfig.DELEGATION_KEY_UPDATE_INTERVAL_KEY,
MRConfig.DELEGATION_KEY_UPDATE_INTERVAL_DEFAULT);
long tokenMaxLifetime =
conf.getLong(MRConfig.DELEGATION_TOKEN_MAX_LIFETIME_KEY,
MRConfig.DELEGATION_TOKEN_MAX_LIFETIME_DEFAULT);
long tokenRenewInterval =
conf.getLong(MRConfig.DELEGATION_TOKEN_RENEW_INTERVAL_KEY,
MRConfig.DELEGATION_TOKEN_RENEW_INTERVAL_DEFAULT);
return new JHSDelegationTokenSecretManager(secretKeyInterval,
tokenMaxLifetime, tokenRenewInterval, 3600000);
}
protected void doSecureLogin(Configuration conf) throws IOException {
SecurityUtil.login(conf, JHAdminConfig.MR_HISTORY_KEYTAB,
JHAdminConfig.MR_HISTORY_PRINCIPAL);
}
@Override
public void start() {
try {
jhsDTSecretManager.startThreads();
} catch(IOException io) {
LOG.error("Error while starting the Secret Manager threads", io);
throw new RuntimeException(io);
}
super.start();
}
@Override
public void stop() {
jhsDTSecretManager.stopThreads();
super.stop();
}
@Private
public HistoryClientService getClientService() {
return this.clientService;
}
public static void main(String[] args) {
Thread.setDefaultUncaughtExceptionHandler(new YarnUncaughtExceptionHandler());
StringUtils.startupShutdownMessage(JobHistoryServer.class, args, LOG);
try {
JobHistoryServer jobHistoryServer = new JobHistoryServer();
ShutdownHookManager.get().addShutdownHook(
new CompositeServiceShutdownHook(jobHistoryServer),
SHUTDOWN_HOOK_PRIORITY);
YarnConfiguration conf = new YarnConfiguration(new JobConf());
jobHistoryServer.init(conf);
jobHistoryServer.start();
} catch (Throwable t) {
LOG.fatal("Error starting JobHistoryServer", t);
System.exit(-1);
}
}
}