As an administrator, you can enable or disable snapshot creation on a directory.
These operations require the superuser privilege. As a user; you can create, delete, or
rename snapshots on a directory that has snapshot creation enabled. These operations require
either the superuser privilege or the owner privilege on the directory.
Administrator Operations
The following table lists the snapshot-related
administrator operations that you can on specified directories:
| Operation |
Command |
| Enable snapshot creation on a directory |
hdfs dfsadmin -allowSnapshot <path> |
| Disable snapshot creation on a directory |
hdfs dfsadmin -disallowSnapshot <path> |
User Operations
The following table lists
the user operations that you can perform on snapshots:
| Operation |
Command |
| Create snapshots |
hdfs dfs -createSnapshot <path>
[<snapshotName>] |
| Delete snapshots |
hdfs dfs -deleteSnapshot <path>
<snapshotName> |
| Rename snapshots |
hdfs dfs -renameSnapshot <path> <oldName>
<newName> |
| List directories on which snapshot creation is enabled
(snapshottable directories) |
hdfs lsSnapshottableDir |
| List differences between contents of snapshots |
hdfs snapshotDiff <path> <fromSnapshot>
<toSnapshot> |
