package com.yoyosys.cebbank.bdap.service.mr;

import java.io.IOException;
import java.io.InputStream;

import org.apache.hadoop.conf.Configuration;
import org.apache.hadoop.fs.FileSystem;
import org.apache.hadoop.fs.Path;
import org.apache.hadoop.io.IOUtils;

/**
 * 
 * @author Administrator
 *
 */
//直接使用FileSystem以标准输出格式显示hadoop文件系统中的文件
public class FileSystemCat {
    public static void main(String[] args) throws IOException {
        String uri = args[0];
        Configuration conf = new Configuration();
        FileSystem fs = FileSystem.get(conf);
        InputStream  in = null;
        try {
            in = fs.open(new Path(uri));
            IOUtils.copyBytes(in, System.out, 4094,false);
        } catch (Exception e) {
            // TODO: handle exception
            IOUtils.closeStream(in);
        }
    }

}