| From: | "alvherre(at)alvh(dot)no-ip(dot)org" <alvherre(at)alvh(dot)no-ip(dot)org> |
|---|---|
| To: | "Bossart, Nathan" <bossartn(at)amazon(dot)com> |
| Cc: | Robert Haas <robertmhaas(at)gmail(dot)com>, Kyotaro Horiguchi <horikyota(dot)ntt(at)gmail(dot)com>, "x4mmm(at)yandex-team(dot)ru" <x4mmm(at)yandex-team(dot)ru>, "a(dot)lubennikova(at)postgrespro(dot)ru" <a(dot)lubennikova(at)postgrespro(dot)ru>, "hlinnaka(at)iki(dot)fi" <hlinnaka(at)iki(dot)fi>, "matsumura(dot)ryo(at)fujitsu(dot)com" <matsumura(dot)ryo(at)fujitsu(dot)com>, "masao(dot)fujii(at)gmail(dot)com" <masao(dot)fujii(at)gmail(dot)com>, "pgsql-hackers(at)postgresql(dot)org" <pgsql-hackers(at)postgresql(dot)org> |
| Subject: | Re: archive status ".ready" files may be created too early |
| Date: | 2021-08-23 16:31:48 |
| Message-ID: | 202108231631.wpeh7fk2j7oz@alvherre.pgsql |
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| Lists: | pgsql-hackers |
On 2021-Aug-23, Bossart, Nathan wrote:
> Hm. My expectation would be that if there are no registrations, we
> cannot create .ready files for the flushed segments. The scenario
> where I can see that happening is when a record gets flushed to disk
> prior to registration. In that case, we'll still eventually register
> the record and wake up the WAL writer process, which will take care of
> creating the .ready files that were missed earlier. Is there another
> case you are thinking of where we could miss registration for a cross-
> segment record altogether?
I'm thinking of the case where no record cross segment boundaries ever.
--
Álvaro Herrera PostgreSQL Developer — https://www.EnterpriseDB.com/
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