| /** |
| * 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.classification.InterfaceAudience.LimitedPrivate; |
| import org.apache.hadoop.classification.InterfaceStability.Unstable; |
| 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.capacity.CSQueue; |
| import org.apache.hadoop.yarn.server.resourcemanager.scheduler.capacity.CapacityScheduler; |
| import org.apache.hadoop.yarn.util.resource.ResourceCalculator; |
| import org.slf4j.Logger; |
| import org.slf4j.LoggerFactory; |
| |
| /** |
| * This is the implementation of {@link ReservationSystem} based on the |
| * {@link CapacityScheduler} |
| */ |
| @LimitedPrivate("yarn") |
| @Unstable |
| public class CapacityReservationSystem extends AbstractReservationSystem { |
| |
| private static final Logger LOG = LoggerFactory |
| .getLogger(CapacityReservationSystem.class); |
| |
| private CapacityScheduler capScheduler; |
| |
| public CapacityReservationSystem() { |
| super(CapacityReservationSystem.class.getName()); |
| } |
| |
| @Override |
| public void reinitialize(Configuration conf, RMContext rmContext) |
| throws YarnException { |
| // Validate if the scheduler is capacity based |
| ResourceScheduler scheduler = rmContext.getScheduler(); |
| if (!(scheduler instanceof CapacityScheduler)) { |
| throw new YarnRuntimeException("Class " |
| + scheduler.getClass().getCanonicalName() + " not instance of " |
| + CapacityScheduler.class.getCanonicalName()); |
| } |
| capScheduler = (CapacityScheduler) scheduler; |
| this.conf = conf; |
| super.reinitialize(conf, rmContext); |
| } |
| |
| @Override |
| protected Resource getMinAllocation() { |
| return capScheduler.getMinimumResourceCapability(); |
| } |
| |
| @Override |
| protected Resource getMaxAllocation() { |
| return capScheduler.getMaximumResourceCapability(); |
| } |
| |
| @Override |
| protected ResourceCalculator getResourceCalculator() { |
| return capScheduler.getResourceCalculator(); |
| } |
| |
| @Override |
| protected QueueMetrics getRootQueueMetrics() { |
| return capScheduler.getRootQueueMetrics(); |
| } |
| |
| @Override |
| protected String getPlanQueuePath(String planQueueName) { |
| return capScheduler.getQueue(planQueueName).getQueuePath(); |
| } |
| |
| @Override |
| protected Resource getPlanQueueCapacity(String planQueueName) { |
| Resource minAllocation = getMinAllocation(); |
| ResourceCalculator rescCalc = getResourceCalculator(); |
| CSQueue planQueue = capScheduler.getQueue(planQueueName); |
| return rescCalc.multiplyAndNormalizeDown(capScheduler.getClusterResource(), |
| planQueue.getAbsoluteCapacity(), minAllocation); |
| } |
| |
| @Override |
| public Plan getPlan(String planName) { |
| return super.getPlan(capScheduler.normalizeQueueName(planName)); |
| } |
| |
| @Override |
| protected ReservationSchedulerConfiguration |
| getReservationSchedulerConfiguration() { |
| return capScheduler.getConfiguration(); |
| } |
| |
| } |
| |
| |