v.22.5Improvement

Server startup issue with external ClickHouse dictionary resolved

Official CH changelog text
Server might refuse to start if it cannot resolve hostname of external ClickHouse dictionary. It's fixed. Fixes #36451. #36463 (tavplubix).
Fixed an issue where the ClickHouse server could refuse to start if it was unable to resolve the hostname of an external ClickHouse dictionary.

Why it matters

This fix addresses the problem that prevented the ClickHouse server from starting when DNS resolution for the external dictionary's hostname failed. It improves server reliability and startup resilience in environments where external dictionaries might have hostname resolution issues.

How to use it

Users do not need to change any configuration to benefit from this fix. After updating to the version including this fix, the server will no longer fail to start due to hostname resolution problems with external dictionaries.

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