You can prevent inadvertent deletion of important data from your HDFS cluster by
marking specific directories as protected. Marking a directory as protected
prevents its recursive deletion. However, this does not protect against graceful deletion of
files under the directory. You can delete the files by moving them to trash.
Go to the HDFS service.
Click the Configuration tab.
Set the Cluster-wide Advanced Configuration Snippet (Safety Valve)
for core-site.xml property as specified:
Name:
fs.protected.directories
Value: Specify a comma-separated list of the
directories that you want to mark as protected; for
example, /user, /data, and so on.
Enter a Reason for Change, and then click
Save Changes to save the property changes.
