/**
* 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.resourcemanager.rmapp.attempt;
import org.apache.hadoop.conf.Configuration;
import org.apache.hadoop.yarn.SystemClock;
import org.apache.hadoop.yarn.api.records.ApplicationAttemptId;
import org.apache.hadoop.yarn.conf.YarnConfiguration;
import org.apache.hadoop.yarn.event.Dispatcher;
import org.apache.hadoop.yarn.event.EventHandler;
import org.apache.hadoop.yarn.util.AbstractLivelinessMonitor;
public class AMLivelinessMonitor extends AbstractLivelinessMonitor<ApplicationAttemptId> {
private EventHandler dispatcher;
public AMLivelinessMonitor(Dispatcher d) {
super("AMLivelinessMonitor", new SystemClock());
this.dispatcher = d.getEventHandler();
}
public void init(Configuration conf) {
super.init(conf);
int expireIntvl = conf.getInt(YarnConfiguration.RM_AM_EXPIRY_INTERVAL_MS,
YarnConfiguration.DEFAULT_RM_AM_EXPIRY_INTERVAL_MS);
setExpireInterval(expireIntvl);
setMonitorInterval(expireIntvl/3);
}
@Override
protected void expire(ApplicationAttemptId id) {
dispatcher.handle(
new RMAppAttemptEvent(id, RMAppAttemptEventType.EXPIRE));
}
}