| /** |
| * 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.reservation; |
| |
| import org.apache.hadoop.conf.Configuration; |
| import org.apache.hadoop.yarn.api.records.Resource; |
| import org.apache.hadoop.yarn.exceptions.YarnException; |
| import org.apache.hadoop.yarn.exceptions.YarnRuntimeException; |
| import org.apache.hadoop.yarn.server.resourcemanager.RMContext; |
| import org.apache.hadoop.yarn.server.resourcemanager.scheduler.QueueMetrics; |
| import org.apache.hadoop.yarn.server.resourcemanager.scheduler.ResourceScheduler; |
| import org.apache.hadoop.yarn.server.resourcemanager.scheduler.fair.FSQueue; |
| import org.apache.hadoop.yarn.server.resourcemanager.scheduler.fair.FairScheduler; |
| import org.apache.hadoop.yarn.util.resource.ResourceCalculator; |
| |
| public class FairReservationSystem extends AbstractReservationSystem { |
| |
| private FairScheduler fairScheduler; |
| |
| public FairReservationSystem() { |
| super(FairReservationSystem.class.getName()); |
| } |
| |
| @Override |
| public void reinitialize(Configuration conf, RMContext rmContext) |
| throws YarnException { |
| // Validate if the scheduler is fair scheduler |
| ResourceScheduler scheduler = rmContext.getScheduler(); |
| if (!(scheduler instanceof FairScheduler)) { |
| throw new YarnRuntimeException("Class " |
| + scheduler.getClass().getCanonicalName() + " not instance of " |
| + FairScheduler.class.getCanonicalName()); |
| } |
| fairScheduler = (FairScheduler) scheduler; |
| this.conf = conf; |
| super.reinitialize(conf, rmContext); |
| } |
| |
| @Override |
| protected ReservationSchedulerConfiguration |
| getReservationSchedulerConfiguration() { |
| return fairScheduler.getAllocationConfiguration(); |
| } |
| |
| @Override |
| protected ResourceCalculator getResourceCalculator() { |
| return fairScheduler.getResourceCalculator(); |
| } |
| |
| @Override |
| protected QueueMetrics getRootQueueMetrics() { |
| return fairScheduler.getRootQueueMetrics(); |
| } |
| |
| @Override |
| protected Resource getMinAllocation() { |
| return fairScheduler.getMinimumResourceCapability(); |
| } |
| |
| @Override |
| protected Resource getMaxAllocation() { |
| return fairScheduler.getMaximumResourceCapability(); |
| } |
| |
| @Override |
| protected String getPlanQueuePath(String planQueueName) { |
| return planQueueName; } |
| |
| @Override |
| protected Resource getPlanQueueCapacity(String planQueueName) { |
| return fairScheduler.getQueueManager().getParentQueue(planQueueName, false) |
| .getSteadyFairShare(); |
| } |
| |
| @Override |
| public Plan getPlan(String planName) { |
| // make sure plan name is a full queue name in fair scheduler. For example, |
| // "root.default" is the full queue name for "default". |
| FSQueue queue = fairScheduler.getQueueManager().getQueue(planName); |
| |
| if (queue != null) { |
| return super.getPlan(queue.getQueueName()); |
| } else { |
| return null; |
| } |
| } |
| } |