v.23.3Improvement

Do not start server on interrupted conversion from Ordinary to Atomic, improved error message and troubleshooting instructions

Official CH changelog text
Do not start the server if an interrupted conversion from Ordinary to Atomic was detected, print a better error message with troubleshooting instructions. #47487 (Alexander Tokmakov).
Improves server startup behavior by detecting interrupted conversions from Ordinary to Atomic tables.

Why it matters

Prevents the ClickHouse server from starting if it detects that a previous conversion from Ordinary to Atomic table was interrupted, avoiding potential data inconsistencies. It also provides a clearer error message with troubleshooting guidance to help users resolve the issue.

How to use it

No explicit action is required from users; the server will automatically check for interrupted conversions during startup and display the enhanced error message if needed.

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