Missing file for YARN-4580

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Jian He 2016-01-11 17:00:17 -08:00
parent e73bf71e10
commit 8172921f6d
1 changed files with 43 additions and 0 deletions

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/**
* 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.Comparator;
import org.apache.hadoop.yarn.api.records.Priority;
/**
* A Comparator which orders SchedulableEntities by priority.
*/
public class PriorityComparator implements Comparator<SchedulableEntity> {
@Override
public int compare(SchedulableEntity se1, SchedulableEntity se2) {
Priority p1 = se1.getPriority();
Priority p2 = se2.getPriority();
if (p1 == null && p2 == null) {
return 0;
} else if (p1 == null) {
return -1;
} else if (p2 == null) {
return 1;
}
return p1.compareTo(p2);
}
}