hadoop ExtendedBlockId 源码
haddop ExtendedBlockId 代码
文件路径：/hadoop-hdfs-project/hadoop-hdfs-client/src/main/java/org/apache/hadoop/hdfs/ExtendedBlockId.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;
import org.apache.commons.lang3.builder.EqualsBuilder;
import org.apache.commons.lang3.builder.HashCodeBuilder;
import org.apache.hadoop.classification.InterfaceAudience;
import org.apache.hadoop.hdfs.protocol.ExtendedBlock;
/**
* An immutable key which identifies a block.
*/
@InterfaceAudience.Private
final public class ExtendedBlockId {
/**
* The block ID for this block.
*/
private final long blockId;
/**
* The block pool ID for this block.
*/
private final String bpId;
public static ExtendedBlockId fromExtendedBlock(ExtendedBlock block) {
return new ExtendedBlockId(block.getBlockId(), block.getBlockPoolId());
}
public ExtendedBlockId(long blockId, String bpId) {
this.blockId = blockId;
this.bpId = bpId;
}
public long getBlockId() {
return this.blockId;
}
public String getBlockPoolId() {
return this.bpId;
}
@Override
public boolean equals(Object o) {
if ((o == null) || (o.getClass() != this.getClass())) {
return false;
}
ExtendedBlockId other = (ExtendedBlockId)o;
return new EqualsBuilder().
append(blockId, other.blockId).
append(bpId, other.bpId).
isEquals();
}
@Override
public int hashCode() {
return new HashCodeBuilder().
append(this.blockId).
append(this.bpId).
toHashCode();
}
@Override
public String toString() {
return blockId + "_" + bpId;
}
}
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