一个复制本地文件到Hadoop文件系统的实例

import java.io.IOException;
import java.io.InputStream;
import java.io.OutputStream;
import java.net.URI;

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

public class FileCopyWithProcess {

    public static void main(String[] args) throws IOException {
        // TODO Auto-generated method stub
        String localSrc = args[0];
        String dst = args[1];
        InputStream in = new BufferedInputStream(new FileInputStream(localSrc));
        Configuration conf = new Configuration();
        FileSystem fs  =  FileSystem.get(URI.create(dst),conf);
        try {
            OutputStream out = fs.create(new Path(dst),new Progressable() {
                @Override
                public void progress() {
                    // TODO Auto-generated method stub
                    System.out.println(".");
                }
            });
        IOUtils.copyBytes(in, out, 4096, true);
        } catch (IOException e) {
            // TODO Auto-generated catch block
            e.printStackTrace();
        }
    }
}