Re: Remove vacuum_defer_cleanup_age

On 10/12/2016 05:00 PM, Robert Haas wrote:
> On Sun, Oct 9, 2016 at 9:51 PM, Josh Berkus <josh(at)agliodbs(dot)com> wrote:
>> Given that hot_standby_feedback is pretty bulletproof now, and a lot of
>> the work in reducing replay conflicts, I think the utility of
>> vacuum_defer_cleanup_age is at an end. I really meant so submit a patch
>> to remove it to 9.6, but it got away from me.
>>
>> Any objections to removing the option in 10?
>
> I'm not sure I see the point.

Redusing the number of configuration variables is an a-priori good. In
aggregate, the more knobs we have, the harder it is to learn how to
admin Postgres. Therefore any time a config variable becomes obsolete,
we should remove it.

--
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Josh Berkus
Red Hat OSAS
(any opinions are my own)