| /** |
| * 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; |
| |
| import org.apache.hadoop.conf.Configuration; |
| import org.apache.hadoop.yarn.api.records.NodeId; |
| 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.server.resourcemanager.rmnode.RMNodeEvent; |
| import org.apache.hadoop.yarn.server.resourcemanager.rmnode.RMNodeEventType; |
| import org.apache.hadoop.yarn.util.AbstractLivelinessMonitor; |
| import org.apache.hadoop.yarn.util.SystemClock; |
| |
| public class NMLivelinessMonitor extends AbstractLivelinessMonitor<NodeId> { |
| |
| private EventHandler dispatcher; |
| |
| public NMLivelinessMonitor(Dispatcher d) { |
| super("NMLivelinessMonitor", new SystemClock()); |
| this.dispatcher = d.getEventHandler(); |
| } |
| |
| public void serviceInit(Configuration conf) throws Exception { |
| int expireIntvl = conf.getInt(YarnConfiguration.RM_NM_EXPIRY_INTERVAL_MS, |
| YarnConfiguration.DEFAULT_RM_NM_EXPIRY_INTERVAL_MS); |
| setExpireInterval(expireIntvl); |
| setMonitorInterval(expireIntvl/3); |
| super.serviceInit(conf); |
| } |
| |
| @Override |
| protected void expire(NodeId id) { |
| dispatcher.handle( |
| new RMNodeEvent(id, RMNodeEventType.EXPIRE)); |
| } |
| } |