HDFS shell常用命令总结分享

HDFS shell常用命令总结分享、HDFS shell常用命令总结分享、1.启动与关闭Hadoop集群、2.目录相关操作、3.文件移动操作、hadoop fs -moveFromLocal ./file /dir1/dir2

HDFS shell常用命令总结分享

• 1.启动与关闭Hadoop集群
  • sbin/start-dfs.sh
  • sbin/start-yarn.sh
  • sbin/stop-dfs.sh
  • sbin/stop-yarn.sh
• 2.目录相关操作
  • hadoop fs -ls /dir
  • hadoop fs -mkdir -p /dir1/dir2
  • hadoop fs -mv /file /dir1/dir2
  • hadoop fs -rm /dir1/dir2/file
  • hadoop fs -rmdir /dir
• 3.文件移动操作
  • ① 从本地上传到HDFS
  • hadoop fs -moveFromLocal ./file /dir1/dir2
  • hadoop fs -copyFromLocal file /dir1/dir2
  • hadoop fs -put file /dir1/dir2
  • ②从HDFS下载到本地
  • hadoop fs -copyToLocal file /dir1/dir2
  • hadoop fs -get file /dir1/dir2
  • hadoop fs -getmerge file /dir1/dir2
  • ③文件内部操作
  • hadoop fs -cat /file
  • hadoop fs -chmod/chown/chgrp
  • hadoop fs -cp /file /file
  • hadoop fs -mv /file /file