v.20.8Improvement
Create system database with Atomic engine as default
Createsystemdatabase withAtomicengine by default (a preparation to enableAtomicdatabase engine by default everywhere). #13680 (tavplubix).
Why it matters
This change prepares for enabling theAtomic database engine as the default across ClickHouse, improving consistency and reliability by leveraging the Atomic engine's transactional capabilities for system-level data.How to use it
No explicit action is required from users. Thesystem database will now be created automatically with the Atomic engine. This serves as a groundwork step towards making the Atomic engine the default everywhere in ClickHouse.