v.22.8New Feature

Implemented Automatic Conversion from Ordinary to Atomic Database Engine

Official CH changelog text
Implemented automatic conversion of database engine from Ordinary to Atomic. Create empty convert_ordinary_to_atomic file in flags directory and all Ordinary databases will be converted automatically on next server start. Resolves #39546. #39933 (Alexander Tokmakov).
Automatic conversion of databases from Ordinary engine to Atomic engine on server start.

Why it matters

This feature addresses the need to upgrade existing Ordinary databases to the more robust Atomic engine without manual intervention, improving data consistency and reliability while simplifying the migration process for users.

How to use it

Create an empty file named convert_ordinary_to_atomic in the flags directory. Upon the next server start, all databases using the Ordinary engine will be automatically converted to the Atomic engine.

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