hadoop AbfsLocatedFileStatus 源码
haddop AbfsLocatedFileStatus 代码
文件路径：/hadoop-tools/hadoop-azure/src/main/java/org/apache/hadoop/fs/azurebfs/services/AbfsLocatedFileStatus.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
* <p>
* http://www.apache.org/licenses/LICENSE-2.0
* <p>
* 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.fs.azurebfs.services;
import org.apache.hadoop.fs.BlockLocation;
import org.apache.hadoop.fs.EtagSource;
import org.apache.hadoop.fs.FileStatus;
import org.apache.hadoop.fs.LocatedFileStatus;
import org.apache.hadoop.util.Preconditions;
/**
* {@link LocatedFileStatus} extended to also carry an ETag.
*/
public class AbfsLocatedFileStatus extends LocatedFileStatus implements EtagSource {
private static final long serialVersionUID = -8185960773314341594L;
/**
* etag; may be null.
*/
private final String etag;
public AbfsLocatedFileStatus(FileStatus status, BlockLocation[] locations) {
super(Preconditions.checkNotNull(status), locations);
if (status instanceof EtagSource) {
this.etag = ((EtagSource) status).getEtag();
} else {
this.etag = null;
}
}
@Override
public String getEtag() {
return etag;
}
@Override
public String toString() {
return "AbfsLocatedFileStatus{"
+ "etag='" + etag + '\'' + "} "
+ super.toString();
}
// equals() and hashCode() overridden to avoid FindBugs warning.
// Base implementation is equality on Path only, which is still appropriate.
@Override
public boolean equals(Object o) {
return super.equals(o);
}
@Override
public int hashCode() {
return super.hashCode();
}
}
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