On Wed, Sep 14, 2022 at 09:33:46PM +0200, Peter Eisentraut wrote:
> Another question on this feature: Currently, if archive_library is set,
> archive_command is ignored. I think if both are set, it should be an error.
> Compare for example what happens if you set multiple recovery_target_xxx
> settings. I don't think silently turning off one setting by setting another
> is a good behavior.
I originally did it this way, but changed it based on this feedback [0]. I
have no problem with the general idea, but the recovery_target_* logic does
have the following note:
* XXX this code is broken by design. Throwing an error from a GUC assign
* hook breaks fundamental assumptions of guc.c. So long as all the variables
* for which this can happen are PGC_POSTMASTER, the consequences are limited,
* since we'd just abort postmaster startup anyway. Nonetheless it's likely
* that we have odd behaviors such as unexpected GUC ordering dependencies.
[0] https://postgr.es/m/CA%2BTgmoaf4Y7_U%2B_W%2BSg5DoAta_FMssr%3D52mx7-_tJnfaD1VubQ%40mail.gmail.com
--
Nathan Bossart
Amazon Web Services: https://aws.amazon.com
