Re: Doc limitation update proposal: include out-of-line OID usage per TOAST-ed columns
Jakub Wartak <jakub.wartak@enterprisedb.com>
From: Jakub Wartak <jakub.wartak@enterprisedb.com>
To: "Andrey M. Borodin" <x4mmm@yandex-team.ru>
Cc: John Naylor <john.naylor@enterprisedb.com>,
Nikita Malakhov <hukutoc@gmail.com>, Gurjeet Singh <gurjeet@singh.im>,
PostgreSQL Hackers <pgsql-hackers@postgresql.org>
Date: 2024-04-03T08:58:16Z
Lists: pgsql-hackers
Hi Andrey, On Thu, Mar 28, 2024 at 1:09 PM Andrey M. Borodin <x4mmm@yandex-team.ru> wrote: > > > > > On 8 Aug 2023, at 12:31, John Naylor <john.naylor@enterprisedb.com> wrote: > > > > > > Also the shared counter is the cause of the slowdown, but not the reason for the numeric limit. > > > > > > Isn't it both? typedef Oid is unsigned int = 2^32, and according to GetNewOidWithIndex() logic if we exhaust the whole OID space it will hang indefinitely which has the same semantics as "being impossible"/permanent hang (?) > > > > Looking again, I'm thinking the OID type size is more relevant for the first paragraph, and the shared/global aspect is more relevant for the second. > > > > The last issue is how to separate the notes at the bottom, since there are now two topics. > > Jakub, do you have plans to address this feedback? Is the CF entry still relevant? Yes; I've forgotten about this one and clearly I had problems formulating it in proper shape to be accepted. I've moved it to the next CF now as this is not critical and I would prefer to help current timesenistive CF. Anyone is welcome to help amend the patch... -J.
Commits
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the thread's linked commits as JSON, with link sources.
API reference →
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Document limit on the number of out-of-line values per table
- e51160fa0bab 15.9 landed
- dda341b32c88 14.14 landed
- c9aa6f4f86fc 13.17 landed
- 667401dd40c8 17.0 landed
- 5ff394503ce2 12.21 landed
- 4d93bbd4e0d4 18.0 landed
- 409be33c3136 16.5 landed
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Log when GetNewOidWithIndex() fails to find unused OID many times.
- 7fbcee1b2d5f 14.0 cited