| From: | Robert Haas <robertmhaas(at)gmail(dot)com> |
|---|---|
| To: | Andres Freund <andres(at)anarazel(dot)de> |
| Cc: | "Drouvot, Bertrand" <bertranddrouvot(dot)pg(at)gmail(dot)com>, Alvaro Herrera <alvherre(at)2ndquadrant(dot)com>, Ibrar Ahmed <ibrar(dot)ahmad(at)gmail(dot)com>, Amit Khandekar <amitdkhan(dot)pg(at)gmail(dot)com>, fabriziomello(at)gmail(dot)com, tushar <tushar(dot)ahuja(at)enterprisedb(dot)com>, Rahila Syed <rahila(dot)syed(at)2ndquadrant(dot)com>, pgsql-hackers <pgsql-hackers(at)postgresql(dot)org> |
| Subject: | Re: Minimal logical decoding on standbys |
| Date: | 2022-12-20 18:31:53 |
| Message-ID: | CA+TgmoZoBAPzWzsedw7v2=6crsYZZUdm7DFnYXZZkfuceAAC_w@mail.gmail.com |
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| Lists: | pgsql-hackers |
On Tue, Dec 20, 2022 at 1:19 PM Andres Freund <andres(at)anarazel(dot)de> wrote:
> I don't understand what the "may*" or "*Possible" really are
> about. snapshotConflictHorizon is a conflict with a certain xid - there
> commonly won't be anything to conflict with. If there's a conflict in
> the logical-decoding-on-standby case, we won't be able to apply it only
> sometimes or such.
The way I was imagining it is that snapshotConflictHorizon tells us
whether there is a conflict with this record and then, if there is,
this new Boolean tells us whether it's relevant to logical decoding as
well.
> How about "affectsLogicalDecoding", "conflictsWithSlots" or
> "isCatalogRel" or such?
isCatalogRel seems fine to me.
--
Robert Haas
EDB: http://www.enterprisedb.com
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