| From: | "Bossart, Nathan" <bossartn(at)amazon(dot)com> |
|---|---|
| To: | Alvaro Herrera <alvherre(at)alvh(dot)no-ip(dot)org>, Kyotaro Horiguchi <horikyota(dot)ntt(at)gmail(dot)com> |
| Cc: | "andres(at)anarazel(dot)de" <andres(at)anarazel(dot)de>, "masao(dot)fujii(at)oss(dot)nttdata(dot)com" <masao(dot)fujii(at)oss(dot)nttdata(dot)com>, "pgsql-hackers(at)lists(dot)postgresql(dot)org" <pgsql-hackers(at)lists(dot)postgresql(dot)org>, "mengjuan(dot)cmj(at)alibaba-inc(dot)com" <mengjuan(dot)cmj(at)alibaba-inc(dot)com>, "Jakub(dot)Wartak(at)tomtom(dot)com" <Jakub(dot)Wartak(at)tomtom(dot)com> |
| Subject: | Re: prevent immature WAL streaming |
| Date: | 2021-09-17 17:07:30 |
| Message-ID: | EFBE9A36-8842-4991-A626-58F6A41386E8@amazon.com |
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| Lists: | pgsql-hackers |
On 9/17/21, 9:37 AM, "Alvaro Herrera" <alvherre(at)alvh(dot)no-ip(dot)org> wrote:
> OK, this version is much more palatable, because here we verify that the
> OVERWRITE_CONTRECORD we replay matches the record that was lost. Also,
> I wrote a test script that creates such a broken record (by the simple
> expedient of deleting the WAL file containing the second half while the
> server is down); we then create a standby and we can observe that it
> replays the sequence correctly.
>
> If you have some time to try your reproducers with this new proposed
> fix, I would appreciate it.
I haven't had a chance to look at the patch yet, but it appears to fix
things with my original reproduction steps for the archive_status
stuff [0].
Nathan
[0] https://postgr.es/m/CBDDFA01-6E40-46BB-9F98-9340F4379505%40amazon.com
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