SSD_CACHE Creation Limitations in user_files Directory

Why it matters

This feature ensures that when creating an SSD_CACHE via DDL, it is restricted to the user_files directory, enhancing security and consistency of cache file locations.

How to use it

To use this feature, create the SSD_CACHE with a DDL query specifying the cache inside the user_files directory, for example:

CREATE SSD_CACHE 'user_files/<cache_name>' SETTINGS ...;