| From: | Melanie Plageman <melanieplageman(at)gmail(dot)com> |
|---|---|
| To: | "Andrey M(dot) Borodin" <x4mmm(at)yandex-team(dot)ru> |
| Cc: | Junwang Zhao <zhjwpku(at)gmail(dot)com>, PostgreSQL Hackers <pgsql-hackers(at)postgresql(dot)org>, Thomas Munro <thomas(dot)munro(at)gmail(dot)com> |
| Subject: | Re: Using read_stream in index vacuum |
| Date: | 2024-10-21 19:56:02 |
| Message-ID: | CAAKRu_aXp6fX1xT6gKA=-j=XT=NU=oUpGF+1gDn2DgtoyjsSdg@mail.gmail.com |
| Views: | Raw Message | Whole Thread | Download mbox | Resend email |
| Thread: | |
| Lists: | pgsql-hackers |
On Mon, Oct 21, 2024 at 3:34 PM Melanie Plageman
<melanieplageman(at)gmail(dot)com> wrote:
>
> For the outer loop, I feel like we have options. For example, maybe
> the read stream callback can call RelationGetNumberOfBlocks(). I mean
> maybe we don't want to have to take a relation extension lock in a
> callback.
Also, given this note in btvacuumscan:
* XXX: Now that new pages are locked with RBM_ZERO_AND_LOCK, I don't
* think the use of the extension lock is still required.
Maybe we can stop requiring the extension lock and then I think it
might be okay to call RelationGetNumberOfBlocks() in the callback.
Probably needs more thought though.
- Melanie
| From | Date | Subject | |
|---|---|---|---|
| Next Message | Mark Hill | 2024-10-21 20:12:28 | RE: msvc directory missing in PostgreSQL 17.0 |
| Previous Message | Melanie Plageman | 2024-10-21 19:34:37 | Re: Using read_stream in index vacuum |