hadoop FSNodeStoreLogOp 源码
haddop FSNodeStoreLogOp 代码
文件路径：/hadoop-yarn-project/hadoop-yarn/hadoop-yarn-common/src/main/java/org/apache/hadoop/yarn/nodelabels/store/op/FSNodeStoreLogOp.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.store.op;
import org.apache.hadoop.yarn.api.records.NodeAttribute;
import org.apache.hadoop.yarn.nodelabels.store.StoreOp;
import org.apache.hadoop.yarn.server.api.protocolrecords.NodeToAttributes;
import org.apache.hadoop.yarn.server.api.protocolrecords.NodesToAttributesMappingRequest;
import java.io.InputStream;
import java.io.OutputStream;
import java.util.HashMap;
import java.util.HashSet;
import java.util.List;
import java.util.Map;
import java.util.Set;
/**
* Defines all FileSystem editlog operation. All node label and attribute
* store write or read operation will be defined in this class.
*
* @param <M> Manager used for each operation.
*/
public abstract class FSNodeStoreLogOp<M>
implements StoreOp<OutputStream, InputStream, M> {
public abstract int getOpCode();
protected Map<String, Set<NodeAttribute>> getNodeToAttributesMap(
NodesToAttributesMappingRequest request) {
List<NodeToAttributes> attributes = request.getNodesToAttributes();
Map<String, Set<NodeAttribute>> nodeToAttrMap = new HashMap<>();
attributes.forEach((v) -> nodeToAttrMap
.put(v.getNode(), new HashSet<>(v.getNodeAttributes())));
return nodeToAttrMap;
}
}
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