/**
* 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.Collection;
import org.apache.hadoop.classification.InterfaceAudience.Private;
import org.apache.hadoop.classification.InterfaceStability.Unstable;
import org.apache.hadoop.yarn.api.records.ApplicationAttemptId;
import org.apache.hadoop.yarn.server.resourcemanager.rmcontainer.RMContainer;
/**
* Represents an Application from the viewpoint of the scheduler.
* Each running Application in the RM corresponds to one instance
* of this class.
*/
@Private
@Unstable
public abstract class SchedulerApplication {
/**
* Get {@link ApplicationAttemptId} of the application master.
* @return <code>ApplicationAttemptId</code> of the application master
*/
public abstract ApplicationAttemptId getApplicationAttemptId();
/**
* Get the live containers of the application.
* @return live containers of the application
*/
public abstract Collection<RMContainer> getLiveContainers();
/**
* Get the reserved containers of the application.
* @return the reserved containers of the application
*/
public abstract Collection<RMContainer> getReservedContainers();
/**
* Is this application pending?
* @return true if it is else false.
*/
public abstract boolean isPending();
}