| From: | Fujii Masao <masao(dot)fujii(at)oss(dot)nttdata(dot)com> |
|---|---|
| To: | Kyotaro Horiguchi <horikyota(dot)ntt(at)gmail(dot)com> |
| Cc: | alvherre(at)alvh(dot)no-ip(dot)org, nagata(at)sraoss(dot)co(dot)jp, ranier(dot)vf(at)gmail(dot)com, pgsql-hackers(at)postgresql(dot)org |
| Subject: | Re: corruption of WAL page header is never reported |
| Date: | 2021-09-13 05:56:11 |
| Message-ID: | aedbb4bb-9349-a980-438b-a7aae6c4be48@oss.nttdata.com |
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| Lists: | pgsql-hackers |
On 2021/09/13 11:00, Kyotaro Horiguchi wrote:
> The point here is "retry this page, not this record", so "we don't need
> to retry immediately" looks a bit ambiguous. So how about something
> like this?
>
> Note that we don't do this while not in standby mode because we don't
> need to avoid retrying this entire record even if the page header is
> not valid. Instead, ReadPageInternal() is responsible for validating
> the page header in that case.
You mean that, while not in standby mode, we need to retry reading
the entire record if the page head is invalid? I was thinking that
we basically give up replaying further records in that case becase
we're not in standby mode.
Regards,
--
Fujii Masao
Advanced Computing Technology Center
Research and Development Headquarters
NTT DATA CORPORATION
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