| From: | Michael Paquier <michael(dot)paquier(at)gmail(dot)com> |
|---|---|
| To: | Masahiko Sawada <sawada(dot)mshk(at)gmail(dot)com> |
| Cc: | Simon Riggs <simon(at)2ndquadrant(dot)com>, Kyotaro HORIGUCHI <horiguchi(dot)kyotaro(at)lab(dot)ntt(dot)co(dot)jp>, y(dot)sokolov(at)postgrespro(dot)ru, Peter Geoghegan <pg(at)bowt(dot)ie>, Andres Freund <andres(at)anarazel(dot)de>, Robert Haas <robertmhaas(at)gmail(dot)com>, David Steele <david(at)pgmasters(dot)net>, Amit Kapila <amit(dot)kapila16(at)gmail(dot)com>, "Ideriha, Takeshi" <ideriha(dot)takeshi(at)jp(dot)fujitsu(dot)com>, PostgreSQL-development <pgsql-hackers(at)postgresql(dot)org>, Kuntal Ghosh <kuntalghosh(dot)2007(at)gmail(dot)com>, pgsql-hackers-owner(at)postgresql(dot)org |
| Subject: | Re: [HACKERS] GUC for cleanup indexes threshold. |
| Date: | 2017-12-01 05:19:09 |
| Message-ID: | CAB7nPqRe_drg3FH+Hi1gUzte+Rr_RUNhndw1idKDb5ziPfEvag@mail.gmail.com |
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| Lists: | pgsql-hackers |
On Thu, Nov 30, 2017 at 12:06 AM, Masahiko Sawada <sawada(dot)mshk(at)gmail(dot)com> wrote:
> On Wed, Nov 29, 2017 at 11:05 PM, Simon Riggs <simon(at)2ndquadrant(dot)com> wrote:
>> Unless there is disagreement on the above, it seems we should apply
>> Yura's patch (an edited version, perhaps).
>>
>
> IIRC the patches that makes the cleanup scan skip has a problem
> pointed by Peter[1], that is that we stash an XID when a btree page is
> deleted, which is used to determine when it's finally safe to recycle
> the page. Yura's patch doesn't have that problem?
>
> [1] https://www.postgresql.org/message-id/CAH2-Wz%3D1%3Dt5fcGGfarQGcAWBqaCh%2BdLMjpYCYHpEyzK8Qg6OrQ%40mail.gmail.com
The latest patch present on this thread does not apply
(https://www.postgresql.org/message-id/c4a47caef28024ab7528946bed264058@postgrespro.ru).
Please send a rebase. For now I am moving the patch to next CF, with
"waiting on author".
--
Michael
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