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From: Dilip Kumar <[email protected]>
To: Hayato Kuroda (Fujitsu) <[email protected]>
Cc: Zhijie Hou (Fujitsu) <[email protected]>
Cc: Alexander Korotkov <[email protected]>
Cc: Amit Kapila <[email protected]>
Cc: Vitaly Davydov <[email protected]>
Cc: Tom Lane <[email protected]>
Cc: Alexander Lakhin <[email protected]>
Cc: pgsql-hackers <[email protected]>
Cc: Masahiko Sawada <[email protected]>
Cc: [email protected] <[email protected]>
Cc: vignesh C <[email protected]>
Subject: Re: Slot's restart_lsn may point to removed WAL segment after hard restart unexpectedly
Date: Wed, 25 Jun 2025 13:55:34 +0530
Message-ID: <CAFiTN-uiVOGwPNmDBPmLnC-86hX9-pKEYH2D_OKUmJd5RAUv=g@mail.gmail.com> (raw)
In-Reply-To: <OSCPR01MB149660EB8A874AC3AE777C658F57BA@OSCPR01MB14966.jpnprd01.prod.outlook.com>
References: <OS0PR01MB5716BB506AF934376FF3A8BB947BA@OS0PR01MB5716.jpnprd01.prod.outlook.com>
	<CAFiTN-uGkrCDi9kqXJqLB+3ATn_ZULmRER73VhkLSDSAnO8SNg@mail.gmail.com>
	<OSCPR01MB149660EB8A874AC3AE777C658F57BA@OSCPR01MB14966.jpnprd01.prod.outlook.com>

On Wed, Jun 25, 2025 at 1:18 PM Hayato Kuroda (Fujitsu)
<[email protected]> wrote:
>
> Dear Dilip,
>
> Another idea is to call ReplicationSlotsComputeRequiredLSN() when at least one
> of the restart_lsn is updated, like attached. I feel this could reduce the computation
> bit more.

Right, that makes sense, if there is nothing updated on disk then we
can avoid computing this.

-- 
Regards,
Dilip Kumar
Google

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  Subject: Re: Slot's restart_lsn may point to removed WAL segment after hard restart unexpectedly
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