hadoop RawLocalFs 源码

2022-10-20
浏览 (452)

haddop RawLocalFs 代码

文件路径：/hadoop-common-project/hadoop-common/src/main/java/org/apache/hadoop/fs/local/RawLocalFs.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.local;

import java.io.IOException;
import java.net.URI;
import java.net.URISyntaxException;

import org.apache.hadoop.classification.InterfaceAudience;
import org.apache.hadoop.classification.InterfaceStability;
import org.apache.hadoop.conf.Configuration;
import org.apache.hadoop.fs.AbstractFileSystem;
import org.apache.hadoop.fs.DelegateToFileSystem;
import org.apache.hadoop.fs.FsConstants;
import org.apache.hadoop.fs.FsServerDefaults;
import org.apache.hadoop.fs.Path;
import org.apache.hadoop.fs.RawLocalFileSystem;

/**
 * The RawLocalFs implementation of AbstractFileSystem.
 *  This impl delegates to the old FileSystem
 */
@InterfaceAudience.Private
@InterfaceStability.Evolving /*Evolving for a release,to be changed to Stable */
public class RawLocalFs extends DelegateToFileSystem {

  RawLocalFs(final Configuration conf) throws IOException, URISyntaxException {
    this(FsConstants.LOCAL_FS_URI, conf);
  }
  
  /**
   * This constructor has the signature needed by
   * {@link AbstractFileSystem#createFileSystem(URI, Configuration)}.
   * 
   * @param theUri which must be that of localFs
   * @param conf
   * @throws IOException
   * @throws URISyntaxException 
   */
  RawLocalFs(final URI theUri, final Configuration conf) throws IOException,
      URISyntaxException {
    super(theUri, new RawLocalFileSystem(), conf, 
        FsConstants.LOCAL_FS_URI.getScheme(), false);
  }
  
  @Override
  public int getUriDefaultPort() {
    return -1; // No default port for file:///
  }
  
  @Override
  public FsServerDefaults getServerDefaults(final Path f)
      throws IOException {
    return LocalConfigKeys.getServerDefaults();
  }

  @Override
  @Deprecated
  public FsServerDefaults getServerDefaults() throws IOException {
    return LocalConfigKeys.getServerDefaults();
  }

  @Override
  public boolean isValidName(String src) {
    // Different local file systems have different validation rules. Skip
    // validation here and just let the OS handle it. This is consistent with
    // RawLocalFileSystem.
    return true;
  }
}

相关信息

hadoop 源码目录

相关文章

hadoop LocalConfigKeys 源码

hadoop LocalFs 源码

hadoop package-info 源码

0 赞

所属分类： 大数据
本文标签： 大数据
版权声明： 原创文章如转载，请注明本文链接: https://www.seaxiang.com/blog/1a2ad416d1904ca38a01358282dc5ed4

热门推荐

1、直接访问google.com
2、 - 优质文章
3、 gate.io
4、 harmony 鸿蒙hdc使用指导
5、 harmony 鸿蒙初识ArkTS语言
6、 harmony 鸿蒙ArkUI组件（ArkTS）开发常见问题
7、 flink kafka connector scan.startup.mode 的几个选项
8、 golang
9、 openharmony
10、 Vue中input框自动聚焦

Loading...