Re: Allow some recovery parameters to be changed with reload

Hello

> I'm wondering if it's safe to allow restore_command to be emptied during
> archive recovery. Even when it's emptied, archive recovery can proceed
> by reading WAL files from pg_wal directory. This is the same behavior as
> when restore_command is set to, e.g., /bin/false.

I am always confused by this implementation detail. restore_command fails? Fine, let's just read file from pg_wal. But
thisis different topic...
 

I do not know the history of this fatal ereport. It looks like "must specify restore_command when standby mode is not
enabled"check is only intended to protect the user from misconfiguration and the rest code will treat empty
restore_commandcorrectly, just like /bin/false. Did not notice anything around StandbyMode conditions.
 

regards, Sergei