| /** |
| * 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.scheduler.capacity; |
| |
| import org.apache.hadoop.yarn.Lock; |
| import org.apache.hadoop.yarn.api.records.Resource; |
| import org.apache.hadoop.yarn.server.resourcemanager.resource.ResourceCalculator; |
| import org.apache.hadoop.yarn.server.resourcemanager.resource.Resources; |
| |
| class CSQueueUtils { |
| |
| final static float EPSILON = 0.0001f; |
| |
| public static void checkMaxCapacity(String queueName, |
| float capacity, float maximumCapacity) { |
| if (maximumCapacity < 0.0f || maximumCapacity > 1.0f) { |
| throw new IllegalArgumentException( |
| "Illegal value of maximumCapacity " + maximumCapacity + |
| " used in call to setMaxCapacity for queue " + queueName); |
| } |
| } |
| |
| public static void checkAbsoluteCapacities(String queueName, |
| float absCapacity, float absMaxCapacity) { |
| if (absMaxCapacity < (absCapacity - EPSILON)) { |
| throw new IllegalArgumentException("Illegal call to setMaxCapacity. " |
| + "Queue '" + queueName + "' has " + "an absolute capacity (" + absCapacity |
| + ") greater than " + "its absolute maximumCapacity (" + absMaxCapacity |
| + ")"); |
| } |
| } |
| |
| public static float computeAbsoluteMaximumCapacity( |
| float maximumCapacity, CSQueue parent) { |
| float parentAbsMaxCapacity = |
| (parent == null) ? 1.0f : parent.getAbsoluteMaximumCapacity(); |
| return (parentAbsMaxCapacity * maximumCapacity); |
| } |
| |
| public static int computeMaxActiveApplications( |
| ResourceCalculator calculator, |
| Resource clusterResource, Resource minimumAllocation, |
| float maxAMResourcePercent, float absoluteMaxCapacity) { |
| return |
| Math.max( |
| (int)Math.ceil( |
| Resources.ratio( |
| calculator, |
| clusterResource, |
| minimumAllocation) * |
| maxAMResourcePercent * absoluteMaxCapacity |
| ), |
| 1); |
| } |
| |
| public static int computeMaxActiveApplicationsPerUser( |
| int maxActiveApplications, int userLimit, float userLimitFactor) { |
| return Math.max( |
| (int)Math.ceil( |
| maxActiveApplications * (userLimit / 100.0f) * userLimitFactor), |
| 1); |
| } |
| |
| @Lock(CSQueue.class) |
| public static void updateQueueStatistics( |
| final ResourceCalculator calculator, |
| final CSQueue childQueue, final CSQueue parentQueue, |
| final Resource clusterResource, final Resource minimumAllocation) { |
| Resource queueLimit = Resources.none(); |
| Resource usedResources = childQueue.getUsedResources(); |
| |
| float absoluteUsedCapacity = 0.0f; |
| float usedCapacity = 0.0f; |
| |
| if (Resources.greaterThan( |
| calculator, clusterResource, clusterResource, Resources.none())) { |
| queueLimit = |
| Resources.multiply(clusterResource, childQueue.getAbsoluteCapacity()); |
| absoluteUsedCapacity = |
| Resources.divide(calculator, clusterResource, |
| usedResources, clusterResource); |
| usedCapacity = |
| Resources.equals(queueLimit, Resources.none()) ? 0 : |
| Resources.divide(calculator, clusterResource, |
| usedResources, queueLimit); |
| } |
| |
| childQueue.setUsedCapacity(usedCapacity); |
| childQueue.setAbsoluteUsedCapacity(absoluteUsedCapacity); |
| |
| Resource available = |
| Resources.roundUp( |
| calculator, |
| Resources.subtract(queueLimit, usedResources), |
| minimumAllocation); |
| childQueue.getMetrics().setAvailableResourcesToQueue( |
| Resources.max( |
| calculator, |
| clusterResource, |
| available, |
| Resources.none() |
| ) |
| ); |
| } |
| } |