Re: Replication slot stats misgivings

From: Amit Kapila <amit(dot)kapila16(at)gmail(dot)com>
To: Masahiko Sawada <sawada(dot)mshk(at)gmail(dot)com>
Cc: vignesh C <vignesh21(at)gmail(dot)com>, Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us>, Andres Freund <andres(at)anarazel(dot)de>, PostgreSQL-development <pgsql-hackers(at)postgresql(dot)org>, Kyotaro HORIGUCHI <horiguchi(dot)kyotaro(at)lab(dot)ntt(dot)co(dot)jp>
Subject: Re: Replication slot stats misgivings
Date: 2021-05-13 05:51:03
Message-ID: CAA4eK1+D3OJXUb-bJMh65omvihFUsBwAYWEX2hbLhucC1WRYfA@mail.gmail.com
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On Wed, May 12, 2021 at 4:02 PM Masahiko Sawada <sawada(dot)mshk(at)gmail(dot)com> wrote:
>
> On Wed, May 12, 2021 at 1:19 PM vignesh C <vignesh21(at)gmail(dot)com> wrote:
> >
> > > I think the part of the test that tests the stats after resetting it
> > > might give different results. This can happen because in the previous
> > > test we spill multiple times (spill_count is 12 in my testing) and it
> > > is possible that some of the spill stats messages is received by stats
> > > collector after the reset message. If this theory is correct then it
> > > better that we remove the test for reset stats and the test after it
> > > "decode and check stats again.". This is not directly related to your
> > > patch or buildfarm failure but I guess this can happen and we might
> > > see such a failure in future.
>
> Good point. I agree to remove this test.
>
> >
> > I agree with your analysis to remove that test. Attached patch has the
> > changes for the same.
>
> Thank you for the patch. The patch looks good to me. I also agree that
> removing the test doesn't reduce the test coverage.
>

Thanks, I have pushed the patch.

--
With Regards,
Amit Kapila.

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