hadoop AutoCreatedQueueManagementPolicy 源码
haddop AutoCreatedQueueManagementPolicy 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/capacity/AutoCreatedQueueManagementPolicy.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
* <p>
* http://www.apache.org/licenses/LICENSE-2.0
* <p>
* 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.server.resourcemanager.scheduler.SchedulerDynamicEditException;
import java.io.IOException;
import java.util.List;
public interface AutoCreatedQueueManagementPolicy {
/**
* Initialize policy
* @param parentQueue parent queue
*/
void init(ParentQueue parentQueue) throws IOException;
/**
* Reinitialize policy state ( if required )
* @param parentQueue parent queue
*/
void reinitialize(ParentQueue parentQueue) throws IOException;
/**
* Get initial template for the specified leaf queue
* @param leafQueue the leaf queue
* @return initial leaf queue template configurations and capacities for
* auto created queue
*/
AutoCreatedLeafQueueConfig getInitialLeafQueueConfiguration(
AbstractAutoCreatedLeafQueue leafQueue)
throws SchedulerDynamicEditException;
/**
* Compute/Adjust child queue capacities
* for auto created leaf queues
* This computes queue entitlements but does not update LeafQueueState or
* queue capacities. Scheduler calls commitQueueManagemetChanges after
* validation after applying queue changes and commits to LeafQueueState
* are done in commitQueueManagementChanges.
*
* @return returns a list of suggested QueueEntitlementChange(s) which may
* or may not be be enforced by the scheduler
*/
List<QueueManagementChange> computeQueueManagementChanges()
throws SchedulerDynamicEditException;
/**
* Commit/Update state for the specified queue management changes.
*/
void commitQueueManagementChanges(
List<QueueManagementChange> queueManagementChanges)
throws SchedulerDynamicEditException;
}
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