hadoop AbstractLabel 源码
haddop AbstractLabel 代码
文件路径：/hadoop-yarn-project/hadoop-yarn/hadoop-yarn-common/src/main/java/org/apache/hadoop/yarn/nodelabels/AbstractLabel.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.nodelabels;
import org.apache.hadoop.yarn.api.records.Resource;
import org.apache.hadoop.yarn.util.resource.Resources;
/**
* Generic class capturing the information required commonly across Partitions
* and Attributes.
*/
public abstract class AbstractLabel {
private Resource resource;
private int numActiveNMs;
private String labelName;
public AbstractLabel() {
super();
}
public AbstractLabel(String labelName) {
this(labelName, Resource.newInstance(0, 0), 0);
}
public AbstractLabel(String labelName, Resource resource, int numActiveNMs) {
super();
this.resource = resource;
this.numActiveNMs = numActiveNMs;
this.labelName = labelName;
}
public void addNode(Resource nodeRes) {
Resources.addTo(resource, nodeRes);
numActiveNMs++;
}
public void removeNode(Resource nodeRes) {
Resources.subtractFrom(resource, nodeRes);
numActiveNMs--;
}
public Resource getResource() {
return Resource.newInstance(this.resource);
}
public int getNumActiveNMs() {
return numActiveNMs;
}
public String getLabelName() {
return labelName;
}
}
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