HDFS的Java客户端操作代码(HDFS删除文件或目录)

1.HDFS删除文件或目录

package Hdfs;

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

import org.apache.hadoop.conf.Configuration;
import org.apache.hadoop.fs.FileSystem;
import org.apache.hadoop.fs.Path;
/**
 * 删除HDFS上的文件或目录实例
 * @author SimonsZhao
 *
 */
public class DeleteFile {
    public static void main(String[] args) {
        String uri="hdfs://neusoft-master:9000/user/root/test1";
        Configuration conf = new Configuration();
        try {
            FileSystem fs = FileSystem.get(URI.create(uri),conf);
            Path delPath = new Path("hdfs://neusoft-master:9000/user/root/test1");
            boolean isDeleted = fs.delete(delPath,false);
            //boolean isDeleted = fs.delete(delPath,true);//递归删除
            System.out.println(isDeleted);
        } catch (IOException e) {
            e.printStackTrace();
        }
    }
}

2.打成Jar包并提交至linux虚拟机运行

[root@neusoft-master hadoop]# hadoop jar /usr/local/software/JarDeleteFile.jar 

　　

结果为：true

3.查看HDFS文件系统是否成功删除

[root@neusoft-master hadoop]# hadoop dfs -ls /user/root/