Hi there,

I am currently using cluster version 15.4 LTS with UC enabled . Azure Data Lake Storage Gen2 has enabled hierarchical namespaces.

I tried the following three ways to mount external storage and all got an error

1. Mount point via the ADLS Gen2 access key
2. Mount point via the Microsoft Entra ID
3. Create external location using Unity Catalog

Error msg:

Py4JError: An error occurred while calling o444.mounts. Trace: py4j.security.Py4JSecurityException: Method public com.databricks.backend.daemon.dbutils.DBUtilsCore$Result com.databricks.backend.daemon.dbutils.DBUtilsCore.mounts() is not whitelisted on class class com.databricks.backend.daemon.dbutils.DBUtilsCore

[RequestId=5577be6a-0230-4213-9169-19d3fbb8630c ErrorClass=INVALID_PARAMETER_VALUE.HIERARCHICAL_NAMESPACE_NOT_ENABLED] The Azure storage account does not have hierarchical namespace enabled.

Single Read-only File
This External Location is a single file, not a directory. The associated Storage Credential grants permission to read its content.

Thanks & Regards,

zmsoft