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From: David G. Johnston <[email protected]>
To: Stephen Froehlich <[email protected]>
Cc: Greg Rychlewski (LCL) <[email protected]>
Cc: [email protected] <[email protected]>
Subject: Re: Does cancelling autovacuum make you lose all the work it did?
Date: Fri, 12 Jun 2020 10:56:08 -0700
Message-ID: <CAKFQuwZc7YjsLXZwMws9+wLA828RkYbiABfDtMJuqNL==F34Dg@mail.gmail.com> (raw)
In-Reply-To: <CH2PR06MB6470E2A863D94EAE85B4B6F2E5810@CH2PR06MB6470.namprd06.prod.outlook.com>
References: <[email protected]>
	<CH2PR06MB6470E2A863D94EAE85B4B6F2E5810@CH2PR06MB6470.namprd06.prod.outlook.com>

The custom here is to inline or bottom-post.

On Fri, Jun 12, 2020 at 10:41 AM Stephen Froehlich <
[email protected]> wrote:

> No autovacuum or vacuum causes no user-visible or breaking changes of any
> kind … it does change the performance of the database backend, but that’s
> all.
>

Um...doesn't really answer the question and besides hitting the wrap-around
limit causes the server to not start in multi-user mode which is surely a
user-visible effect.  Performance is a user-visible effect too - the only
thing it better not impact is the correctness of the results.

To answer the original question: vacuum's effects are basically immediate
so work is not lost if it gets cancelled.

David J.


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