hadoop NodeAttributeStore 源码
haddop NodeAttributeStore 代码
文件路径：/hadoop-yarn-project/hadoop-yarn/hadoop-yarn-common/src/main/java/org/apache/hadoop/yarn/nodelabels/NodeAttributeStore.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.conf.Configuration;
import org.apache.hadoop.yarn.exceptions.YarnException;
import org.apache.hadoop.yarn.server.api.protocolrecords.NodeToAttributes;
import java.io.Closeable;
import java.io.IOException;
import java.util.List;
/**
* Interface class for Node label store.
*/
public interface NodeAttributeStore extends Closeable {
/**
* Replace labels on node.
*
* @param nodeToAttribute node to attribute list.
* @throws IOException
*/
void replaceNodeAttributes(List<NodeToAttributes> nodeToAttribute)
throws IOException;
/**
* Add attribute to node.
*
* @param nodeToAttribute node to attribute list.
* @throws IOException
*/
void addNodeAttributes(List<NodeToAttributes> nodeToAttribute)
throws IOException;
/**
* Remove attribute from node.
*
* @param nodeToAttribute node to attribute list.
* @throws IOException
*/
void removeNodeAttributes(List<NodeToAttributes> nodeToAttribute)
throws IOException;
/**
* Initialize based on configuration and NodeAttributesManager.
*
* @param configuration configuration instance.
* @param mgr nodeattributemanager instance.
* @throws Exception
*/
void init(Configuration configuration, NodeAttributesManager mgr)
throws Exception;
/**
* Recover store on resourcemanager startup.
* @throws IOException
* @throws YarnException
*/
void recover() throws IOException, YarnException;
}
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