需要自己写代码来实现：

/** *  */package com.jason.hadoop.example;import java.io.IOException;import java.net.URI;import org.apache.hadoop.conf.Configuration;import org.apache.hadoop.fs.FSDataInputStream;import  org.apache.hadoop.fs.FSDataOutputStream;import org.apache.hadoop.fs.FileStatus;import org.apache.hadoop.fs.FileSystem;import org.apache.hadoop.fs.Path;/** * @author jason * */public class PutMerge {    public static void main(String[] args) throws IOException {        Configuration conf = new Configuration();         conf.addResource("classpath:/hadoop/core-site.xml");          conf.addResource("classpath:/hadoop/hdfs-site.xml");          conf.addResource("classpath:/hadoop/mapred-site.xml");        FileSystem hdfs = FileSystem.get(URI.create(args[1]), conf);//          FileSystem hdfs = FileSystem.get(conf);        FileSystem local = FileSystem.getLocal(conf);        Path inputDlir = new Path(args[0]);        Path hdfsFile = new Path(args[2]);        try {            FileStatus[] inputFiles = local.listStatus(inputDlir);            FSDataOutputStream out = hdfs.create(hdfsFile);            for (int i=0; i
    
      0) {                    out.write(buffer, 0 , bytesRead);                }                in.close();            }            out.close();        } catch (IOException ioe) {            ioe.printStackTrace();        }    }}
    

把工程打成jar包后，执行以下命令即可：

hadoop jar hadoopExample-1.0-SNAPSHOT.jar com.jason.hadoop.example.PutMerge /home/jason/hadoop-1.0.1/put_merge hdfs://localhost:9000 /example/put_merge/in/merge_222.txt