topic Re: Unable to access unity catalog volume via /Volumes in notebook in Data Engineering

Unable to access unity catalog volume via /Volumes in notebook

DC3 — Fri, 26 Apr 2024 15:29:39 GMT

I have set up a volume in unity catalog in the format catalog/schema/volume, and granted all permissions to all users on the catalog, schema and volume.

From the notebook I can see the /Volumes directory in the root of the file system but am unable to read or list files within it.

import os
import stat

stat.filemode(os.stat("/Volumes").st_mode)
# 'drwxrwxrwx

stat.filemode(os.stat("/Volumes/catalog").st_mode)
# PermissionErro: [Errno 1] Operation not permitted: '/Volumes/catalog'

Re: Unable to access unity catalog volume via /Volumes in notebook

Walter_C — Sat, 27 Apr 2024 16:05:57 GMT

Ensure that you have the necessary privileges on the catalog, schema, and volume, to access a volume, you must have the USE CATALOG privilege on the Volume’s parent catalog and the USE SCHEMA privilege on its parent schema.
If you're trying to create a volume, you need the CREATE VOLUME privilege on the schema where you want to create the Volume, the USE SCHEMA privilege on the schema, and the USE CATALOG privilege on the parent catalog.
If you're dealing with an External Volume, you must also have the CREATE EXTERNAL VOLUME privilege on an External Location where you want to create the Volume.

Re: Unable to access unity catalog volume via /Volumes in notebook

DC3 — Mon, 29 Apr 2024 14:51:45 GMT

Thanks for your comments. The problem turned out to be the compute resource not having unity catalog enabled.