v.23.12New Feature

Warning Alert for Excessive Databases or Tables

When the number of databases or tables exceeds a configurable threshold, show a warning to the user. #57375 (凌涛).
Adds a warning notification when the number of databases or tables exceeds a configurable threshold in ClickHouse.

Why it matters

To alert users about potentially high numbers of databases or tables, which could impact performance or usability, enabling them to take appropriate actions.

How to use it

Configure the threshold for the number of databases or tables in the system settings. When the count exceeds this threshold, ClickHouse will display a warning to the user.