v.20.10Improvement

Enable Atomic Database Engine by Default for New Databases

Enable Atomic database engine by default for newly created databases. #15003 (tavplubix).
Enable the Atomic database engine by default for all newly created databases in ClickHouse.

Why it matters

The feature ensures that all new databases leverage the Atomic engine, which provides atomicity, consistency, and durability guarantees. This simplifies database management by defaulting to a more robust and reliable storage engine, reducing the risk of data inconsistencies and improving overall data integrity.

How to use it

No manual action is required from users. When creating a new database using CREATE DATABASE, ClickHouse will automatically use the Atomic engine by default unless explicitly specified otherwise.