| /** |
| * 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.Resources; |
| |
| class CSQueueUtils { |
| |
| public static void checkMaxCapacity(String queueName, |
| float capacity, float maximumCapacity) { |
| if (maximumCapacity < 0.0f || maximumCapacity > 1.0f || |
| maximumCapacity < capacity) { |
| throw new IllegalArgumentException( |
| "Illegal value of maximumCapacity " + maximumCapacity + |
| " used in call to setMaxCapacity for queue " + queueName); |
| } |
| if (maximumCapacity < capacity) { |
| throw new IllegalArgumentException( |
| "Illegal call to setMaxCapacity. " + |
| "Queue '" + queueName + "' has " + |
| "capacity (" + capacity + ") greater than " + |
| "maximumCapacity (" + maximumCapacity + ")" ); |
| } |
| } |
| |
| public static float computeAbsoluteMaximumCapacity( |
| float maximumCapacity, CSQueue parent) { |
| float parentAbsMaxCapacity = |
| (parent == null) ? 1.0f : parent.getAbsoluteMaximumCapacity(); |
| return (parentAbsMaxCapacity * maximumCapacity); |
| } |
| |
| public static int computeMaxActiveApplications(Resource clusterResource, |
| Resource minimumAllocation, float maxAMResourcePercent, |
| float absoluteMaxCapacity) { |
| return |
| Math.max( |
| (int)Math.ceil( |
| ((float)clusterResource.getMemory() / |
| minimumAllocation.getMemory()) * |
| 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 CSQueue childQueue, final CSQueue parentQueue, |
| final Resource clusterResource, final Resource minimumAllocation) { |
| final int clusterMemory = clusterResource.getMemory(); |
| final int usedMemory = childQueue.getUsedResources().getMemory(); |
| |
| float queueLimit = 0.0f; |
| float utilization = 0.0f; |
| float usedCapacity = 0.0f; |
| if (clusterMemory > 0) { |
| queueLimit = clusterMemory * childQueue.getAbsoluteCapacity(); |
| final float parentAbsoluteCapacity = |
| (parentQueue == null) ? 1.0f : parentQueue.getAbsoluteCapacity(); |
| utilization = (usedMemory / queueLimit); |
| usedCapacity = (usedMemory / (clusterMemory * parentAbsoluteCapacity)); |
| } |
| |
| childQueue.setUtilization(utilization); |
| childQueue.setUsedCapacity(usedCapacity); |
| |
| int available = |
| Math.max((roundUp(minimumAllocation, (int)queueLimit) - usedMemory), 0); |
| childQueue.getMetrics().setAvailableResourcesToQueue( |
| Resources.createResource(available)); |
| } |
| |
| public static int roundUp(Resource minimumAllocation, int memory) { |
| int minMemory = minimumAllocation.getMemory(); |
| return LeafQueue.divideAndCeil(memory, minMemory) * minMemory; |
| } |
| |
| public static int roundDown(Resource minimumAllocation, int memory) { |
| int minMemory = minimumAllocation.getMemory(); |
| return (memory / minMemory) * minMemory; |
| } |
| } |