Re: Issue with logical replication slot during switchover

From: Fabrice Chapuis <fabrice636861(at)gmail(dot)com>
To: shveta malik <shveta(dot)malik(at)gmail(dot)com>
Cc: PostgreSQL Hackers <pgsql-hackers(at)lists(dot)postgresql(dot)org>, Shlok Kyal <shlok(dot)kyal(dot)oss(at)gmail(dot)com>
Subject: Re: Issue with logical replication slot during switchover
Date: 2025-10-01 10:15:24
Message-ID: CAA5-nLCG=7hRC-Pyo1qveXg6JKzrYMteTegOvfTjNU2KznTYFA@mail.gmail.com
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Thanks. I have refactored the code for synchronize_one_slot() as there
was some code-repetition. Please take it if you find it okay.

Ok for the goto retry.

Also I felt that when we create a slot through slot-synchronization,
we should create it with allow_overwrite as false. And thus in the
attached patch, I have changed that part as well.

The problem if allow_overwrite is set to false on the new standby it does
not reflect the "allow_overwrite" parameter value set on the the primary
instance.
At the moment we can let the slot creation with allow_overwrite set to
false.

It is a top up patch. Attached it as txt, please rename before
applying atop your changes. Attached the steps for your reference.

The patch work fine. I generate the v3.

Regards

Fabrice

On Tue, Sep 30, 2025 at 11:41 AM shveta malik <shveta(dot)malik(at)gmail(dot)com>
wrote:

> On Tue, Sep 30, 2025 at 12:17 PM Fabrice Chapuis
> <fabrice636861(at)gmail(dot)com> wrote:
> >
> > Hi,
> >
> > Here the generated v2 of the Patch.
> >
>
> Thanks. I have refactored the code for synchronize_one_slot() as there
> was some code-repetition. Please take it if you find it okay.
>
> Also I felt that when we create a slot through slot-synchronization,
> we should create it with allow_overwrite as false. And thus in the
> attached patch, I have changed that part as well.
>
> It is a top up patch. Attached it as txt, please rename before
> applying atop your changes. Attached the steps for your reference.
>
> thanks
> Shveta
>

Attachment Content-Type Size
v3-0001-Add-allow_overwrite-option-to-logical-replication.patch application/octet-stream 9.6 KB

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