| /** |
| * 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.policy; |
| |
| import java.util.*; |
| import java.util.concurrent.ConcurrentSkipListSet; |
| |
| import org.slf4j.Logger; |
| import org.slf4j.LoggerFactory; |
| import org.apache.hadoop.yarn.server.resourcemanager.rmcontainer.RMContainer; |
| import org.apache.hadoop.yarn.server.resourcemanager.scheduler.*; |
| import org.apache.hadoop.yarn.nodelabels.CommonNodeLabelsManager; |
| |
| |
| /** |
| * An OrderingPolicy which can serve as a baseclass for policies which can be |
| * expressed in terms of comparators |
| */ |
| public abstract class AbstractComparatorOrderingPolicy<S extends SchedulableEntity> implements OrderingPolicy<S> { |
| |
| private static final Logger LOG = |
| LoggerFactory.getLogger(OrderingPolicy.class); |
| |
| protected ConcurrentSkipListSet<S> schedulableEntities; |
| protected Comparator<SchedulableEntity> comparator; |
| protected Map<String, S> entitiesToReorder = new HashMap<String, S>(); |
| |
| public AbstractComparatorOrderingPolicy() { } |
| |
| @Override |
| public Collection<S> getSchedulableEntities() { |
| return schedulableEntities; |
| } |
| |
| @Override |
| public Iterator<S> getAssignmentIterator(IteratorSelector sel) { |
| reorderScheduleEntities(); |
| return schedulableEntities.iterator(); |
| } |
| |
| @Override |
| public Iterator<S> getPreemptionIterator() { |
| reorderScheduleEntities(); |
| return schedulableEntities.descendingIterator(); |
| } |
| |
| public static void updateSchedulingResourceUsage(ResourceUsage ru) { |
| ru.setCachedUsed(CommonNodeLabelsManager.ANY, ru.getAllUsed()); |
| ru.setCachedPending(CommonNodeLabelsManager.ANY, ru.getAllPending()); |
| } |
| |
| protected void reorderSchedulableEntity(S schedulableEntity) { |
| //remove, update comparable data, and reinsert to update position in order |
| schedulableEntities.remove(schedulableEntity); |
| updateSchedulingResourceUsage( |
| schedulableEntity.getSchedulingResourceUsage()); |
| schedulableEntities.add(schedulableEntity); |
| } |
| |
| protected void reorderScheduleEntities() { |
| synchronized (entitiesToReorder) { |
| for (Map.Entry<String, S> entry : |
| entitiesToReorder.entrySet()) { |
| reorderSchedulableEntity(entry.getValue()); |
| } |
| entitiesToReorder.clear(); |
| } |
| } |
| |
| protected void entityRequiresReordering(S schedulableEntity) { |
| synchronized (entitiesToReorder) { |
| entitiesToReorder.put(schedulableEntity.getId(), schedulableEntity); |
| } |
| } |
| |
| public Comparator<SchedulableEntity> getComparator() { |
| return comparator; |
| } |
| |
| @Override |
| public void addSchedulableEntity(S s) { |
| if (null == s) { |
| return; |
| } |
| schedulableEntities.add(s); |
| } |
| |
| @Override |
| public boolean removeSchedulableEntity(S s) { |
| if (null == s) { |
| return false; |
| } |
| synchronized (entitiesToReorder) { |
| entitiesToReorder.remove(s.getId()); |
| } |
| return schedulableEntities.remove(s); |
| } |
| |
| @Override |
| public void addAllSchedulableEntities(Collection<S> sc) { |
| schedulableEntities.addAll(sc); |
| } |
| |
| @Override |
| public int getNumSchedulableEntities() { |
| return schedulableEntities.size(); |
| } |
| |
| @Override |
| public abstract void configure(Map<String, String> conf); |
| |
| @Override |
| public abstract void containerAllocated(S schedulableEntity, |
| RMContainer r); |
| |
| @Override |
| public abstract void containerReleased(S schedulableEntity, |
| RMContainer r); |
| |
| @Override |
| public abstract void demandUpdated(S schedulableEntity); |
| |
| @Override |
| public abstract String getInfo(); |
| |
| @Override |
| public abstract String getConfigName(); |
| |
| } |