
alluxio.hadoop.AlluxioFileSystem Maven / Gradle / Ivy
/*
* The Alluxio Open Foundation licenses this work under the Apache License, version 2.0
* (the "License"). You may not use this work except in alluxio.shaded.client.com.liance with the License, which is
* available at www.apache.alluxio.shaded.client.org.licenses/LICENSE-2.0
*
* This software is distributed on an "AS IS" basis, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND,
* either express or implied, as more fully set forth in the License.
*
* See the NOTICE file distributed with this work for information regarding copyright ownership.
*/
package alluxio.hadoop;
import alluxio.Constants;
import alluxio.shaded.client.org.apache.hadoop.conf.Configuration;
import alluxio.shaded.client.org.apache.hadoop.fs.DelegateToFileSystem;
import java.alluxio.shaded.client.io.IOException;
import java.net.URI;
import java.net.URISyntaxException;
/**
* The Alluxio implementation of Hadoop AbstractFileSystem. The implementation delegates to the
* existing Alluxio {@link alluxio.hadoop.FileSystem} and is only necessary for use with
* Hadoop 2.x. Configuration example in Hadoop core-site.xml file:
*
* <property>
* <name>fs.AbstractFileSystem.alluxio.impl</name>
* <value>alluxio.hadoop.AlluxioFileSystem</value>
* </property>
*
*
* For a long term solution, we need to rewrite AlluxioFileSystem by extending Hadoop's
* {@link AbstractFileSystem} directly.
*/
public class AlluxioFileSystem extends DelegateToFileSystem {
/**
* This constructor has the signature needed by
* {@link alluxio.shaded.client.org.apache.hadoop.fs.AbstractFileSystem#createFileSystem(URI, Configuration)}
* in Hadoop 2.x.
*
* @param uri the uri for this Alluxio filesystem
* @param conf Hadoop configuration
* @throws URISyntaxException if uri
has syntax error
*/
AlluxioFileSystem(final URI uri, final Configuration conf)
throws IOException, URISyntaxException {
super(uri, new FileSystem(), conf, Constants.SCHEME, false);
}
}
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