DNS Cache Automatically Updates on Excessive Network Errors
Official CH changelog text
The DNS cache is now updated automatically when there are too many network errors.
The DNS cache in ClickHouse is now automatically refreshed when multiple network errors occur.
Why it matters
This feature addresses the issue of stale DNS records causing repeated network errors by ensuring that the DNS cache is updated proactively, improving connection reliability and reducing downtime for users.
How to use it
No additional configuration is required. ClickHouse will automatically detect excessive network errors and refresh the DNS cache to maintain stable connections.