hadoop GetDestinationResponse 源码
haddop GetDestinationResponse 代码
文件路径：/hadoop-hdfs-project/hadoop-hdfs-rbf/src/main/java/org/apache/hadoop/hdfs/server/federation/store/protocol/GetDestinationResponse.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.hdfs.server.federation.store.protocol;
import java.io.IOException;
import java.util.Collection;
import java.util.Collections;
import org.apache.hadoop.classification.InterfaceAudience.Public;
import org.apache.hadoop.classification.InterfaceStability.Unstable;
import org.apache.hadoop.hdfs.server.federation.store.driver.StateStoreSerializer;
/**
* API response for getting the destination subcluster of a file.
*/
public abstract class GetDestinationResponse {
public static GetDestinationResponse newInstance()
throws IOException {
return StateStoreSerializer
.newRecord(GetDestinationResponse.class);
}
public static GetDestinationResponse newInstance(
Collection<String> nsIds) throws IOException {
GetDestinationResponse request = newInstance();
request.setDestinations(nsIds);
return request;
}
@Public
@Unstable
public abstract Collection<String> getDestinations();
@Public
@Unstable
public void setDestination(String nsId) {
setDestinations(Collections.singletonList(nsId));
}
@Public
@Unstable
public abstract void setDestinations(Collection<String> nsIds);
}
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