Andrew Dunstan <andrew@dunslane.net> writes:
> On 2025-04-18 Fr 7:26 PM, Tom Lane wrote:
> +See C<log_check(...)>. CAUTION: use of either option requires that
> +the server's log_min_messages be at least DEBUG2, and that no other
> +client backend is launched concurrently. These requirements allow
> +C<connect_fails> to wait to see the postmaster-log report of backend
> +exit, without which there is a race condition as to whether we will
> +see the expected backend log output.
> That seems a little fragile. I can imagine test authors easily
> forgetting this. Is it worth sanity checking to make sure
> log_min_messages is appropriately set?
Setting log_min_messages is not so easily forgotten, because
connect_fails will just hang until timeout if you didn't.
I'm more worried about the "no other backend" requirement.
I think v2 is reasonably proof against that, but whether it's
sufficiently bulletproof to withstand the buildfarm environment
remains to be seen. I wish there were a better way to
determine the backend PID for a failed connection...
regards, tom lane
