From: | John Naylor <john(dot)naylor(at)2ndquadrant(dot)com> |
---|---|
To: | Amit Kapila <amit(dot)kapila16(at)gmail(dot)com> |
Cc: | Andres Freund <andres(at)anarazel(dot)de>, Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us>, PostgreSQL-development <pgsql-hackers(at)postgresql(dot)org> |
Subject: | Re: Unhappy about API changes in the no-fsm-for-small-rels patch |
Date: | 2019-04-26 05:18:09 |
Message-ID: | CACPNZCuVD2xUF1+gK3L_9m6UP9qNQPaprQQUWD2uK6Jqr8g5Tg@mail.gmail.com |
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Lists: | pgsql-hackers |
On Fri, Apr 26, 2019 at 11:52 AM Amit Kapila <amit(dot)kapila16(at)gmail(dot)com> wrote:
>
> On Thu, Apr 25, 2019 at 12:39 PM John Naylor
> <john(dot)naylor(at)2ndquadrant(dot)com> wrote:
> >
> > On Wed, Apr 24, 2019 at 1:58 PM Amit Kapila <amit(dot)kapila16(at)gmail(dot)com> wrote:
> > > <v2 patch>
> >
> > Sorry for not noticing earlier, but this patch causes a regression
> > test failure for me (attached)
> >
>
> Can you please try to finish the remaining work of the patch (I am bit
> tied up with some other things)? I think the main thing apart from
> representation of map as one-byte or one-bit per block is to implement
> invalidation. Also, try to see if there is anything pending which I
> might have missed. As discussed above, we need to issue an
> invalidation for following points: (a) when vacuum finds there is no
> FSM and page has more space now, I think you can detect this in
> RecordPageWithFreeSpace (b) invalidation to notify the existence of
> FSM, this can be done both by vacuum and backend.
Yes, I'll work on it.
--
John Naylor https://www.2ndQuadrant.com/
PostgreSQL Development, 24x7 Support, Remote DBA, Training & Services
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