hadoop Planner 源码
haddop Planner 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/reservation/planning/Planner.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.reservation.planning;
import java.util.List;
import org.apache.hadoop.yarn.api.records.ReservationDefinition;
import org.apache.hadoop.yarn.server.resourcemanager.reservation.Plan;
import org.apache.hadoop.yarn.server.resourcemanager.reservation.ReservationSchedulerConfiguration;
import org.apache.hadoop.yarn.server.resourcemanager.reservation.exceptions.PlanningException;
public interface Planner {
/**
* Update the existing {@link Plan}, by adding/removing/updating existing
* reservations, and adding a subset of the reservation requests in the
* contracts parameter.
*
* @param plan the {@link Plan} to replan
* @param contracts the list of reservation requests
* @throws PlanningException if operation is unsuccessful
*/
public void plan(Plan plan, List<ReservationDefinition> contracts)
throws PlanningException;
/**
* Initialize the replanner
*
* @param planQueueName the name of the queue for this plan
* @param conf the scheduler configuration
*/
void init(String planQueueName, ReservationSchedulerConfiguration conf);
}
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