client.close() occasionally takes 10s

[hubodz]

Hello,
Occasionally, but quite often, I have a case where client.close() takes 10 seconds (between 10.0 and 10.2 to be more specific).
I tried lowering the client timeout (assuming it may be connected), but it doesn't seem to have any influence.

I guess problem may be connected with gRPC client closing, but not sure how to troubleshoot it further.

ETCD logs don't show anything different from the case where close() happens immediately...

I would be grateful for advices...