| From: | Andrey Borodin <x4mmm(at)yandex-team(dot)ru> |
|---|---|
| To: | Heikki Linnakangas <hlinnaka(at)iki(dot)fi> |
| Cc: | Robert Haas <robertmhaas(at)gmail(dot)com>, Thomas Munro <thomas(dot)munro(at)enterprisedb(dot)com>, pgsql-hackers <pgsql-hackers(at)postgresql(dot)org>, Костя Кузнецов <chapaev28(at)ya(dot)ru> |
| Subject: | Re: GiST VACUUM |
| Date: | 2018-07-19 10:52:34 |
| Message-ID: | 5A3FD588-BC51-4FC3-B9C3-19453F824C68@yandex-team.ru |
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| Lists: | pgsql-hackers |
Hi!
> 19 июля 2018 г., в 1:12, Heikki Linnakangas <hlinnaka(at)iki(dot)fi> написал(а):
>
> Yeah, please, I think this is the way to go.
Here's v11 divided into proposed steps.
In second step I still use paloc's memory, but only to store two bitmaps: bitmap of internal pages and bitmap of empty leafs. Second physical scan only reads internal pages. I can omit that bitmap, if I'll scan everything.
Also, I can replace emptyLeafs bitmap with array\list, but I do not really think it will be big.
Anyway I propose focusing on first step.
Best regards, Andrey Borodin.
| Attachment | Content-Type | Size |
|---|---|---|
| 0002-Delete-pages-during-GiST-VACUUM-v11.patch | application/octet-stream | 19.5 KB |
| 0001-Physical-GiST-scan-in-VACUUM-v11.patch | application/octet-stream | 8.4 KB |
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