| From: | Bruce Momjian <bruce(at)momjian(dot)us> |
|---|---|
| To: | Julien Rouhaud <rjuju123(at)gmail(dot)com> |
| Cc: | Michael Paquier <michael(at)paquier(dot)xyz>, Alvaro Herrera <alvherre(at)alvh(dot)no-ip(dot)org>, Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us>, torikoshia <torikoshia(at)oss(dot)nttdata(dot)com>, Atsushi Torikoshi <atorik(at)gmail(dot)com>, Tatsuro Yamada <tatsuro(dot)yamada(dot)tf(at)nttcom(dot)co(dot)jp>, Robert Haas <robertmhaas(at)gmail(dot)com>, Tomas Vondra <tomas(dot)vondra(at)2ndquadrant(dot)com>, Evgeny Efimkin <efimkin(at)yandex-team(dot)ru>, PostgreSQL Hackers <pgsql-hackers(at)lists(dot)postgresql(dot)org> |
| Subject: | Re: Feature improvement: can we add queryId for pg_catalog.pg_stat_activity view? |
| Date: | 2020-10-12 14:14:45 |
| Message-ID: | 20201012141445.GA24889@momjian.us |
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| Lists: | pgsql-hackers |
On Mon, Oct 12, 2020 at 04:20:05PM +0800, Julien Rouhaud wrote:
> But there are many people that aren't happy with the current hashing
> approach. If we're going to move the computation in core, shouldn't
> we listen to their complaints and let them pay some probably quite
> high overhead to base the hash on name and/or fully qualified name
> rather than OID?
> For instance people using logical replication to upgrade to a newer
> version may want to easily compare query performance on the new
> version, or people with multi-tenant databases may want to ignore the
> schema name to keep a low number of different queryid.
Well, we have to consider how complex the user interface has to be to
allow more flexibility. We don't need to allow every option a user will
want.
With a version number, we have the ability to improve the algorithm or
add customization, but for the first use, we are probably better off
keeping it simple.
--
Bruce Momjian <bruce(at)momjian(dot)us> https://momjian.us
EnterpriseDB https://enterprisedb.com
The usefulness of a cup is in its emptiness, Bruce Lee
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