Re: doc: Mention clock synchronization recommendation for hot_standby_feedback

From: Jakub Wartak <jakub(dot)wartak(at)enterprisedb(dot)com>
To: Amit Kapila <amit(dot)kapila16(at)gmail(dot)com>
Cc: PostgreSQL Hackers <pgsql-hackers(at)postgresql(dot)org>
Subject: Re: doc: Mention clock synchronization recommendation for hot_standby_feedback
Date: 2025-03-03 07:35:58
Message-ID: CAKZiRmyEBkR5tfwrzXaoC6D29Gp6g_fD6Bd_k58DjZV1=rbKdQ@mail.gmail.com
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Hi Amit,

On Mon, Mar 3, 2025 at 6:26 AM Amit Kapila <amit(dot)kapila16(at)gmail(dot)com> wrote:
[..]

OK, sure.

> How about something like: "Note that if the clock on standby is moved
> ahead or backward, the feedback message may not be sent at the
> required interval. This can lead to prolonged risk of not removing
> dead rows on primary for extended periods as the feedback mechanism is
> based on timestamp."

Sure thing. I've just added '(..) In the extreme cases this can..' as
it is pretty rare to hit it. Patch attached.

-J.

Attachment Content-Type Size
v2-0001-doc-Mention-clock-synchronization-recommendation-.patch application/octet-stream 1.3 KB

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