Re: primary_conninfo missing from pg_stat_wal_receiver

On Thu, Jun 30, 2016 at 9:41 PM, Alvaro Herrera
<alvherre@2ndquadrant.com> wrote:
> Fujii Masao wrote:
>> On Thu, Jun 30, 2016 at 9:30 PM, Michael Paquier
>> <michael.paquier@gmail.com> wrote:
>> > On Thu, Jun 30, 2016 at 8:59 PM, Fujii Masao <masao.fujii@gmail.com> wrote:
>
>> >> ISTM that we will never be able to get out of this loop if walreceiver
>> >> fails to connect to the master (e.g., password is wrong) after we enter
>> >> this loop.
>> >
>> > Wouldn't it be cleaner to just return an error here instead of retrying?
>>
>> I prefer to return NULL. Now NULL is returned when walreceiver's pid is 0.
>> We can just change this logic so that NULL is returned pid is 0 OR the
>> flag is false.
>
> For the conninfo only, or for everything?

All of them. If this connstr is not ready for display, the WAL
receiver does not have a proper connection yet, so there is nothing
worth showing anyway to the user.
-- 
Michael