hadoop SchedulerQueue 源码
haddop SchedulerQueue 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/SchedulerQueue.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;
import java.util.List;
import org.apache.hadoop.classification.InterfaceAudience.LimitedPrivate;
import org.apache.hadoop.yarn.api.records.QueueState;
import org.apache.hadoop.yarn.exceptions.YarnException;
/**
*
* Represents a queue in Scheduler.
*
*/
@SuppressWarnings("rawtypes")
@LimitedPrivate("yarn")
public interface SchedulerQueue<T extends SchedulerQueue> extends Queue {
/**
* Get list of child queues.
* @return a list of child queues
*/
List<T> getChildQueues();
/**
* Get the parent queue.
* @return the parent queue
*/
T getParent();
/**
* Get current queue state.
* @return the queue state
*/
QueueState getState();
/**
* Update the queue state.
* @param state the queue state
*/
void updateQueueState(QueueState state);
/**
* Stop the queue.
*/
void stopQueue();
/**
* Activate the queue.
* @throws YarnException if the queue can not be activated.
*/
void activateQueue() throws YarnException;
}
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