HadoopUtilsTest.java Source code

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Here is the source code for HadoopUtilsTest.java

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/* Copyright 2013 Future TV, Inc.
 *
 *      Licensed 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.
 */

import org.apache.hadoop.conf.Configuration;
import org.apache.hadoop.fs.FileStatus;
import org.apache.hadoop.fs.FileSystem;
import org.apache.hadoop.fs.Path;
import org.apache.hadoop.fs.PathFilter;
import org.apache.hadoop.hbase.HBaseConfiguration;
import org.apache.hadoop.io.IOUtils;

import java.io.IOException;

/**
 * Created with IntelliJ IDEA.
 * User: xiaowu lei
 * Date: 13-12-12
 * Time: ?11:27
 */
public class HadoopUtilsTest {
    public static void main(String[] args) throws IOException {
        Configuration confgiruration = HBaseConfiguration.create();
        FileSystem fileSystem = null;
        try {
            fileSystem = FileSystem.get(confgiruration);
            FileStatus[] fileStatuses = fileSystem.listStatus(new Path("/icntv/grade/correlate-result/2013-12-12"),
                    new PathFilter() {
                        @Override
                        public boolean accept(Path path) {

                            return path.getName().matches("part-r-\\d*");
                        }
                    });
            for (FileStatus f : fileStatuses) {
                IOUtils.copyBytes(fileSystem.open(f.getPath()), System.out, 4096, false);
            }
        } catch (Exception e) {
            e.printStackTrace();
        } finally {
            if (null != fileSystem) {
                fileSystem.close();
            }
        }
    }
}