| From: | shveta malik <shveta(dot)malik(at)gmail(dot)com> |
|---|---|
| To: | vignesh C <vignesh21(at)gmail(dot)com> |
| Cc: | Peter Smith <smithpb2250(at)gmail(dot)com>, Shlok Kyal <shlok(dot)kyal(dot)oss(at)gmail(dot)com>, Amit Kapila <amit(dot)kapila16(at)gmail(dot)com>, Masahiko Sawada <sawada(dot)mshk(at)gmail(dot)com>, Peter Eisentraut <peter(at)eisentraut(dot)org>, PostgreSQL Hackers <pgsql-hackers(at)lists(dot)postgresql(dot)org>, Tomas Vondra <tomas(dot)vondra(at)enterprisedb(dot)com>, Euler Taveira <euler(at)eulerto(dot)com>, Michael Paquier <michael(at)paquier(dot)xyz>, "Hayato Kuroda (Fujitsu)" <kuroda(dot)hayato(at)fujitsu(dot)com>, Hou, Zhijie/侯 志杰 <houzj(dot)fnst(at)fujitsu(dot)com>, "Jonathan S(dot) Katz" <jkatz(at)postgresql(dot)org>, shveta malik <shveta(dot)malik(at)gmail(dot)com> |
| Subject: | Re: Logical Replication of sequences |
| Date: | 2024-08-02 09:03:32 |
| Message-ID: | CAJpy0uDS-8Y7vVUM50ooFzCeEWWxg+5afOPtsRVswCj1xuN-bg@mail.gmail.com |
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| Lists: | pgsql-hackers |
On Fri, Aug 2, 2024 at 2:24 PM shveta malik <shveta(dot)malik(at)gmail(dot)com> wrote:
>
> On Thu, Aug 1, 2024 at 9:26 AM shveta malik <shveta(dot)malik(at)gmail(dot)com> wrote:
> >
> > On Mon, Jul 29, 2024 at 4:17 PM vignesh C <vignesh21(at)gmail(dot)com> wrote:
> > >
> > > Thanks for reporting this, these issues are fixed in the attached
> > > v20240730_2 version patch.
> > >
>
> I was reviewing the design of patch003, and I have a query. Do we need
> to even start an apply worker and create replication slot when
> subscription created is for 'sequences only'? IIUC, currently logical
> replication apply worker is the one launching sequence-sync worker
> whenever needed. I think it should be the launcher doing this job and
> thus apply worker may even not be needed for current functionality of
> sequence sync? Going forward when we implement incremental sync of
> sequences, then we may have apply worker started but now it is not
> needed.
>
Also, can we please mention the state change and 'who does what' atop
sequencesync.c file similar to what we have atop tablesync.c file
otherwise it is difficult to figure out the flow.
thanks
Shveta
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