Re: Resetting spilled txn statistics in pg_stat_replication

From: Masahiko Sawada <masahiko(dot)sawada(at)2ndquadrant(dot)com>
To: Amit Kapila <amit(dot)kapila16(at)gmail(dot)com>
Cc: Dilip Kumar <dilipbalaut(at)gmail(dot)com>, Magnus Hagander <magnus(at)hagander(dot)net>, Tomas Vondra <tomas(dot)vondra(at)2ndquadrant(dot)com>, PostgreSQL Hackers <pgsql-hackers(at)lists(dot)postgresql(dot)org>
Subject: Re: Resetting spilled txn statistics in pg_stat_replication
Date: 2020-10-08 02:15:34
Message-ID: CA+fd4k76Y-E=-dug4fsQvaR03Z-29Qt1e4OU26_Ct+GdnC+wUg@mail.gmail.com
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On Wed, 7 Oct 2020 at 17:52, Amit Kapila <amit(dot)kapila16(at)gmail(dot)com> wrote:
>
> On Wed, Oct 7, 2020 at 11:24 AM Masahiko Sawada
> <masahiko(dot)sawada(at)2ndquadrant(dot)com> wrote:
> >
> > On Tue, 6 Oct 2020 at 17:56, Amit Kapila <amit(dot)kapila16(at)gmail(dot)com> wrote:
> > >
> > > On Tue, Oct 6, 2020 at 9:34 AM Masahiko Sawada
> > > <masahiko(dot)sawada(at)2ndquadrant(dot)com> wrote:
> > > >
> > > > Looking at pgstat_reset_replslot_counter() in the v8 patch, even if we
> > > > pass a physical slot name to pg_stat_reset_replication_slot() a
> > > > PgStat_MsgResetreplslotcounter is sent to the stats collector. I’m
> > > > okay with not raising an error but maybe we can have it not to send
> > > > the message in that case.
> > > >
> > >
> > > makes sense, so changed accordingly.
> > >
> >
> > Thank you for updating the patch!
> >
>
> Thanks, I will push the first one tomorrow unless I see more comments
> and test-case one later.

I thought we could have a test case for the reset function, what do you think?

> I think after we are done with this the next
> step would be to finish the streaming stats work [1]. We probably need
> to review and add the test case in that patch. If nobody else shows up
> I will pick it up and complete it.

+1
I can review that patch.

Regards,

--
Masahiko Sawada http://www.2ndQuadrant.com/
PostgreSQL Development, 24x7 Support, Remote DBA, Training & Services

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