Re: doc fix for pg_stat_activity.backend_type

On 11/13/18, Amit Kapila <amit(dot)kapila16(at)gmail(dot)com> wrote:
> On Tue, Nov 13, 2018 at 5:38 AM Michael Paquier <michael(at)paquier(dot)xyz>
> wrote:
>>
>> On Mon, Nov 12, 2018 at 09:42:45PM +0700, John Naylor wrote:
>> > Looks like it. A quick search revealed "parallel worker" and "logical
>> > replication worker". src/test/modules/ also show "test_shm_mq" and
>> > "worker_spi", but it seems those don't need to be publicly documented.
>> > If that sounds right I'll update the patch to include the first two.
>>
>> Just wondering: do we actually need to include in the docs this list at
>> all? This is a recipe to forget its update each time a new backend type
>> is added.
>>
>
> Sure, but how will we justify documenting (autovacuum launcher and
> autovacuum worker) and not (logical replication launcher and logical
> replication worker)? I think we can document the type of workers that
> are part of core-server functionality. We can make some generic
> statement on the workers that can be launched by extensions.

How about something like the attached?

-John Naylor