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From: Chao Li <li.evan.chao@gmail.com>
To: David G. Johnston <david.g.johnston@gmail.com>
Cc: Tom Lane <tgl@sss.pgh.pa.us>
Cc: Dimitrios Apostolou <jimis@gmx.net>
Cc: Nathan Bossart <nathandbossart@gmail.com>
Cc: Thomas Munro <thomas.munro@gmail.com>
Cc: pgsql-hackers@lists.postgresql.org <pgsql-hackers@lists.postgresql.org>
Subject: Re: [PATCH v1] parallel pg_restore: avoid disk seeks when jumping short distance forward
Date: Mon, 13 Oct 2025 11:41:15 +0800
Message-ID: <12B091E6-8395-4570-807D-0116660D9F1F@gmail.com> (raw)
In-Reply-To: <CAKFQuwZpXR4d7zN6n-S+GANbVw0mOJj1qRfDimR4FBf6e6yYDA@mail.gmail.com>
References: <2edb7a57-b225-3b23-a680-62ba90658fec@gmx.net>
	<a7344d8f-927c-1f97-6cc0-ac630deb98c4@gmx.net>
	<c0e531f9-accc-3a93-e9e6-2cec1471f9e9@gmx.net>
	<1282067.1744651649@sss.pgh.pa.us>
	<c6bb93c1-4042-743c-096c-27c5e7c73347@gmx.net>
	<f7a23708-c336-c189-f155-4b3197bf6ea0@gmx.net>
	<aEioDuePEBRnfJYk@nathan>
	<5ed51587-5a24-4d79-e36e-927620d0e3a2@gmx.net>
	<aEygf8AchBk04gOA@nathan>
	<f99e9774-da49-60f0-20e0-b97d9f12a04e@gmx.net>
	<72d2c81b-a0fe-3d99-9dd4-0d771e6e673e@gmx.net>
	<1po8os49-r63o-2923-p37n-12698o1qn7p0@tzk.arg>
	<3515357.1760128017@sss.pgh.pa.us>
	<3698234.1760149336@sss.pgh.pa.us>
	<3686.1760232320@sss.pgh.pa.us>
	<CBF70398-279C-4BA7-9FA1-2879A49F4EC9@gmail.com>
	<CAKFQuwZpXR4d7zN6n-S+GANbVw0mOJj1qRfDimR4FBf6e6yYDA@mail.gmail.com>



> On Oct 13, 2025, at 11:39, David G. Johnston <david.g.johnston@gmail.com> wrote:
> 
> 
> “iif” is shorthand for “if and only if”.  So it isn’t likely to be a typo; it only needs to be changed if it is wrong.  I haven’t looked to see.
> 

Thanks for the explanation, I wasn’t aware of that. I learned.

Best regards,
--
Chao Li (Evan)
HighGo Software Co., Ltd.
https://www.highgo.com/

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