Enable snapshot creation on a directory

You must enable snapshot creation on a directory before creating snapshots on that directory. If the snapshot creation is enabled, the directory becomes snapshottable.

You can perform this task only if you have the superuser privilege.
You cannot enable snapshot creation on any directory if its parent or child directory is already enabled for snapshot creation.

Run the hdfs dfsadmin command with the -allowSnapshot option and specify the directory on which you want to enable snapshot creation.

The following example shows how you can enable snapshot creation for the directory /data/dir1:

hdfs dfsadmin -allowSnapshot /data/dir1

If snapshot creation is successfully enabled on the specified directory, a confirmation message appears.

Allowing snapshot on /data/dir1 succeeded