hadoop BlockLocalPathInfo 源码
haddop BlockLocalPathInfo 代码
文件路径：/hadoop-hdfs-project/hadoop-hdfs-client/src/main/java/org/apache/hadoop/hdfs/protocol/BlockLocalPathInfo.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.protocol;
import org.apache.hadoop.classification.InterfaceAudience;
import org.apache.hadoop.classification.InterfaceStability;
/**
* A block and the full path information to the block data file and
* the metadata file stored on the local file system.
*/
@InterfaceAudience.Private
@InterfaceStability.Evolving
public class BlockLocalPathInfo {
private final ExtendedBlock block;
private String localBlockPath = ""; // local file storing the data
private String localMetaPath = ""; // local file storing the checksum
/**
* Constructs BlockLocalPathInfo.
* @param b The block corresponding to this lock path info.
* @param file Block data file.
* @param metafile Metadata file for the block.
*/
public BlockLocalPathInfo(ExtendedBlock b, String file, String metafile) {
block = b;
localBlockPath = file;
localMetaPath = metafile;
}
/**
* Get the Block data file.
* @return Block data file.
*/
public String getBlockPath() {return localBlockPath;}
/**
* @return the Block
*/
public ExtendedBlock getBlock() { return block;}
/**
* Get the Block metadata file.
* @return Block metadata file.
*/
public String getMetaPath() {return localMetaPath;}
/**
* Get number of bytes in the block.
* @return Number of bytes in the block.
*/
public long getNumBytes() {
return block.getNumBytes();
}
}
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