hadoop FifoOrderingPolicy 源码
haddop FifoOrderingPolicy 代码
文件路径：/hadoop-yarn-project/hadoop-yarn/hadoop-yarn-server/hadoop-yarn-server-resourcemanager/src/main/java/org/apache/hadoop/yarn/server/resourcemanager/scheduler/policy/FifoOrderingPolicy.java
/**
* 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.apache.hadoop.yarn.server.resourcemanager.scheduler.capacity.CapacitySchedulerConfiguration;
import org.apache.hadoop.yarn.server.resourcemanager.rmcontainer.RMContainer;
/**
* An OrderingPolicy which orders SchedulableEntities by input order
*/
public class FifoOrderingPolicy<S extends SchedulableEntity> extends AbstractComparatorOrderingPolicy<S> {
public FifoOrderingPolicy() {
List<Comparator<SchedulableEntity>> comparators =
new ArrayList<Comparator<SchedulableEntity>>();
comparators.add(new PriorityComparator());
comparators.add(new FifoComparator());
this.comparator = new CompoundComparator(comparators);
this.schedulableEntities = new ConcurrentSkipListSet<S>(comparator);
}
@Override
public void configure(Map<String, String> conf) {
}
@Override
public void containerAllocated(S schedulableEntity,
RMContainer r) {
}
@Override
public void containerReleased(S schedulableEntity,
RMContainer r) {
}
@Override
public void demandUpdated(S schedulableEntity) {
}
@Override
public String getInfo() {
return "FifoOrderingPolicy";
}
@Override
public String getConfigName() {
return CapacitySchedulerConfiguration.FIFO_APP_ORDERING_POLICY;
}
}
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