hadoop PathHandle 源码
haddop PathHandle 代码
文件路径：/hadoop-common-project/hadoop-common/src/main/java/org/apache/hadoop/fs/PathHandle.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.fs;
import java.io.Serializable;
import java.nio.ByteBuffer;
import org.apache.hadoop.classification.InterfaceAudience;
import org.apache.hadoop.classification.InterfaceStability;
/**
* Opaque, serializable reference to an entity in the FileSystem. May contain
* metadata sufficient to resolve or verify subsequent accesses independent of
* other modifications to the FileSystem.
*/
@InterfaceAudience.Public
@InterfaceStability.Evolving
@FunctionalInterface
public interface PathHandle extends Serializable {
/**
* @return Serialized form in bytes.
*/
default byte[] toByteArray() {
ByteBuffer bb = bytes();
byte[] ret = new byte[bb.remaining()];
bb.get(ret);
return ret;
}
/**
* Get the bytes of this path handle.
* @return the bytes to get to the process completing the upload.
*/
ByteBuffer bytes();
@Override
boolean equals(Object other);
}
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