hadoop Evaluable 源码
haddop Evaluable 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/constraint/Evaluable.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.constraint;
import org.apache.hadoop.yarn.exceptions.YarnException;
/**
* A class implements Evaluable interface represents the internal state
* of the class can be changed against a given target.
* @param <T> a target to evaluate against
*/
public interface Evaluable<T> {
/**
* Evaluate against a given target, this process changes the internal state
* of current class.
*
* @param target a generic type target that impacts this evaluation.
* @throws YarnException
*/
void evaluate(T target) throws YarnException;
}
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