hadoop SchedulableEntity 源码
haddop SchedulableEntity 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/policy/SchedulableEntity.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.policy;
import org.apache.hadoop.yarn.api.records.Priority;
import org.apache.hadoop.yarn.server.resourcemanager.scheduler.ResourceUsage;
/**
* A SchedulableEntity is a process to be scheduled.
* for example, an application / application attempt
*/
public interface SchedulableEntity {
/**
* Id - each entity must have a unique id
*/
public String getId();
/**
* Compare the passed SchedulableEntity to this one for input order.
* Input order is implementation defined and should reflect the
* correct ordering for first-in first-out processing
*/
public int compareInputOrderTo(SchedulableEntity other);
/**
* View of Resources wanted and consumed by the entity
*/
public ResourceUsage getSchedulingResourceUsage();
/**
* Get the priority of the application
*/
public Priority getPriority();
/**
* Whether application was running before RM restart.
*/
public boolean isRecovering();
/**
* Get partition corresponding to this entity.
* @return partition
*/
String getPartition();
/**
* Start time of the job.
* @return start time
*/
long getStartTime();
}
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