hadoop NodeAttributeMirrorOp 源码
haddop NodeAttributeMirrorOp 代码
文件路径：/hadoop-yarn-project/hadoop-yarn/hadoop-yarn-common/src/main/java/org/apache/hadoop/yarn/nodelabels/store/op/NodeAttributeMirrorOp.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.thirdparty.com.google.common.collect.ImmutableSet;
import org.apache.hadoop.yarn.api.records.NodeAttribute;
import org.apache.hadoop.yarn.nodelabels.NodeAttributesManager;
import org.apache.hadoop.yarn.proto.YarnServerResourceManagerServiceProtos;
import org.apache.hadoop.yarn.server.api.protocolrecords.AttributeMappingOperationType;
import org.apache.hadoop.yarn.server.api.protocolrecords.NodesToAttributesMappingRequest;
import org.apache.hadoop.yarn.server.api.protocolrecords.impl.pb.NodesToAttributesMappingRequestPBImpl;
import java.io.IOException;
import java.io.InputStream;
import java.io.OutputStream;
/**
* File System Node Attribute Mirror read and write operation.
*/
public class NodeAttributeMirrorOp
extends FSNodeStoreLogOp<NodeAttributesManager> {
@Override
public void write(OutputStream os, NodeAttributesManager mgr)
throws IOException {
((NodesToAttributesMappingRequestPBImpl) NodesToAttributesMappingRequest
.newInstance(AttributeMappingOperationType.REPLACE,
mgr.getNodeToAttributes(
ImmutableSet.of(NodeAttribute.PREFIX_CENTRALIZED)), false))
.getProto().writeDelimitedTo(os);
}
@Override
public void recover(InputStream is, NodeAttributesManager mgr)
throws IOException {
NodesToAttributesMappingRequest request =
new NodesToAttributesMappingRequestPBImpl(
YarnServerResourceManagerServiceProtos
.NodesToAttributesMappingRequestProto
.parseDelimitedFrom(is));
mgr.replaceNodeAttributes(NodeAttribute.PREFIX_CENTRALIZED,
getNodeToAttributesMap(request));
}
@Override
public int getOpCode() {
return -1;
}
}
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