org.apache.hadoop.fs.WebHdfs Maven / Gradle / Ivy
/**
* 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 org.apache.hadoop.classification.InterfaceAudience;
import org.apache.hadoop.classification.InterfaceStability;
import org.apache.hadoop.conf.Configuration;
import org.apache.hadoop.hdfs.web.WebHdfsFileSystem;
import java.io.IOException;
import java.net.URI;
import java.net.URISyntaxException;
/**
* AbstractFileSystem implementation for HDFS over the web.
*/
@InterfaceAudience.Public
@InterfaceStability.Evolving
public class WebHdfs extends DelegateToFileSystem {
public static final String SCHEME = "webhdfs";
/**
* This constructor has the signature needed by
* {@link AbstractFileSystem#createFileSystem(URI, Configuration)}
*
* @param theUri which must be that of webhdfs
* @param conf configuration
* @throws IOException
*/
WebHdfs(URI theUri, Configuration conf)
throws IOException, URISyntaxException {
super(theUri, createWebHdfsFileSystem(conf), conf, SCHEME, false);
}
/**
* Returns a new {@link WebHdfsFileSystem}, with the given configuration.
*
* @param conf configuration
* @return new WebHdfsFileSystem
*/
private static WebHdfsFileSystem createWebHdfsFileSystem(Configuration conf) {
WebHdfsFileSystem fs = new WebHdfsFileSystem();
fs.setConf(conf);
return fs;
}
}