hadoop FixedBlockMultiReplicaResolver 源码
haddop FixedBlockMultiReplicaResolver 代码
文件路径：/hadoop-tools/hadoop-fs2img/src/main/java/org/apache/hadoop/hdfs/server/namenode/FixedBlockMultiReplicaResolver.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.namenode;
import org.apache.hadoop.classification.InterfaceAudience;
import org.apache.hadoop.classification.InterfaceStability;
import org.apache.hadoop.conf.Configuration;
import org.apache.hadoop.fs.FileStatus;
/**
* Resolver mapping all files to a configurable, uniform blocksize
* and replication.
*/
@InterfaceAudience.Public
@InterfaceStability.Unstable
public class FixedBlockMultiReplicaResolver extends FixedBlockResolver {
public static final String REPLICATION =
"hdfs.image.writer.resolver.fixed.block.replication";
private int replication;
@Override
public void setConf(Configuration conf) {
super.setConf(conf);
replication = conf.getInt(REPLICATION, 1);
}
public int getReplication(FileStatus s) {
return replication;
}
}
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