Ranger audit directories in HDFS are owned by specific service users. In the case of HDFS,
it will be the HDFS service user. Typically, HDFS service user is blacklisted for the
DECRYPT_EEK operation. Hence, enabling encryption of Ranger audit directories in HDFS is not
recommended.
Responsible for HDFS administration, HDFS Superusers are not granted rights
to decrypt data within encryption zones. Rather, they are authorized to create zones and
attach keys to those zones for the data sets that they manage.