Roman Khavronenko

Does anyone work on this? If no, I'd like to take it)

Thanks for so detailed report @nezed!

Can you verify if this request works without using agent, maybe via `curl` or any other http client?

Proxy returns "cannot reach" error when it unable to establish connection to the given address https://github.com/Vertamedia/chproxy/blob/1758e7399fe57c97aeec8e55dd13c6300399969b/proxy.go#L186-L193. I do not know what causes this because a lot of things can be...

Thanks for report! It looks like a bug to me but I can't provide no guarantees when it will be fixed. PR's are welcome. cc @valyala

What if proxy will send generated query_id back in response headers?

Hi @levonet! Could you pls verify un-even request distribution by looking into [metrics](https://github.com/Vertamedia/chproxy#metrics) exported by proxy?

Sorry, `uneven` distribution. Metrics to check are following: - host_health - host_penalties_total - request_sum_total by replica

Unfortunately I can't say much from the graphs. The balancing algorithm is not exactly round-robin, it is least-loaded round robin. So if you have CH nodes with different performance or...

Hi @yctn! Unfortunately proxy can't write into multiple clusters.