org.apache.hadoop.hdfs.tools.HDFSConcat 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.hdfs.tools;
import java.io.IOException;
import org.apache.hadoop.classification.InterfaceAudience;
import org.apache.hadoop.conf.Configuration;
import org.apache.hadoop.fs.FileSystem;
import org.apache.hadoop.fs.Path;
import org.apache.hadoop.hdfs.DistributedFileSystem;
@InterfaceAudience.Private
public class HDFSConcat {
private final static String def_uri = "hdfs://localhost:9000";
public static void main(String... args) throws IOException {
if(args.length < 2) {
System.err.println("Usage HDFSConcat target srcs..");
System.exit(0);
}
Configuration conf = new Configuration();
String uri = conf.get("fs.default.name", def_uri);
Path path = new Path(uri);
DistributedFileSystem dfs =
(DistributedFileSystem)FileSystem.get(path.toUri(), conf);
Path [] srcs = new Path[args.length-1];
for(int i=1; i