| From: | Robert Haas <robertmhaas(at)gmail(dot)com> |
|---|---|
| To: | Adrien Nayrat <adrien(dot)nayrat(at)anayrat(dot)info> |
| Cc: | Andres Freund <andres(at)anarazel(dot)de>, Amit Kapila <amit(dot)kapila16(at)gmail(dot)com>, PostgreSQL mailing lists <pgsql-hackers(at)postgresql(dot)org> |
| Subject: | Re: Explain buffers wrong counter with parallel plans |
| Date: | 2018-05-04 17:05:49 |
| Message-ID: | CA+TgmoaPSz4OdpxP6R2vvkmT-PDT1dK3Pn=fwCaXbuLfs99U3A@mail.gmail.com |
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| Lists: | pgsql-hackers |
On Wed, May 2, 2018 at 11:37 AM, Adrien Nayrat
<adrien(dot)nayrat(at)anayrat(dot)info> wrote:
> In 9.6 gather node reports sum of buffers for main process + workers. In 10,
> gather node only reports buffers from the main process.
Oh, really? Well, that sounds like a bug. Amit seems to think it's
expected behavior, but I don't know why it should be. The commit
message makes it sound like it's just refactoring, but in fact it
seems to have made a significant behavior change that doesn't look
very desirable.
--
Robert Haas
EnterpriseDB: http://www.enterprisedb.com
The Enterprise PostgreSQL Company
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