hadoop FsConstants 源码
haddop FsConstants 代码
文件路径：/hadoop-common-project/hadoop-common/src/main/java/org/apache/hadoop/fs/FsConstants.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.net.URI;
import org.apache.hadoop.classification.InterfaceAudience;
import org.apache.hadoop.classification.InterfaceStability;
/**
* FileSystem related constants.
*/
@InterfaceAudience.Public
@InterfaceStability.Stable
public interface FsConstants {
// URI for local filesystem
public static final URI LOCAL_FS_URI = URI.create("file:///");
// URI scheme for FTP
public static final String FTP_SCHEME = "ftp";
// Maximum number of symlinks to recursively resolve in a path
static final int MAX_PATH_LINKS = 32;
/**
* ViewFs: viewFs file system (ie the mount file system on client side)
*/
public static final URI VIEWFS_URI = URI.create("viewfs:///");
public static final String VIEWFS_SCHEME = "viewfs";
String FS_VIEWFS_OVERLOAD_SCHEME_TARGET_FS_IMPL_PATTERN =
"fs.viewfs.overload.scheme.target.%s.impl";
String VIEWFS_TYPE = "viewfs";
}
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