| From: | Timur Magomedov <t(dot)magomedov(at)postgrespro(dot)ru> |
|---|---|
| To: | "Aya Iwata (Fujitsu)" <iwata(dot)aya(at)fujitsu(dot)com> |
| Cc: | Peter Smith <smithpb2250(at)gmail(dot)com>, "pgsql-hackers(at)lists(dot)postgresql(dot)org" <pgsql-hackers(at)lists(dot)postgresql(dot)org>, Tomas Vondra <tomas(at)vondra(dot)me>, Japin Li <japinli(at)hotmail(dot)com>, shveta malik <shveta(dot)malik(at)gmail(dot)com>, "Hayato Kuroda (Fujitsu)" <kuroda(dot)hayato(at)fujitsu(dot)com>, 'Alexandre Felipe' <o(dot)alexandre(dot)felipe(at)gmail(dot)com>, Álvaro Herrera <alvherre(at)kurilemu(dot)de> |
| Subject: | Re: [WIP]Vertical Clustered Index (columnar store extension) - take2 |
| Date: | 2026-02-17 16:59:28 |
| Message-ID: | 9bebf705a4565fad027dda4ed09df020c94270b9.camel@postgrespro.ru |
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| Lists: | pgsql-hackers |
Hello, Iwata-san.
> > 2. VCI has own Change Data Capture method. It doesn't use triggers
> > either logical replication for CDC, it uses IAM and homegrown hooks
> > in
> > heapam.c. Probably VCI-style CDC could be separated to its own
> > patch
> > for review and used in other extensions too.
>
> Could you elaborate a bit more on your thoughts regarding this?
> For example, what kind of hook functionality is thought to be useful?
> It's helpful if we decide hooks are really needed after some
> research,
> and we have to propose them separately.
All changes to core PostgreSQL code is currently maintained in a single
VCI-changes-to-postgres-core patch. It would be probably simpler to
review and accept if CDC patch was separated on its own. It would
contain hooks and anything else which allows VCI (or possibly any other
index) to get fresh data from table. Maybe we even don't need some
hooks but can extend IAM API instead.
--
Regards,
Timur Magomedov
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