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From: Andres Freund <[email protected]>
To: Bossart, Nathan <[email protected]>
Cc: [email protected] <[email protected]>
Cc: McAlister, Grant <[email protected]>
Cc: Mlodgenski, Jim <[email protected]>
Cc: Nasby, Jim <[email protected]>
Cc: Hsu, John <[email protected]>
Subject: Re: partial heap only tuples
Date: Sat, 13 Feb 2021 08:26:23 -0800
Message-ID: <[email protected]> (raw)
In-Reply-To: <[email protected]>
References: <[email protected]>

Hi,

On 2021-02-09 18:48:21 +0000, Bossart, Nathan wrote:
> In order to be eligible for cleanup, the final tuple in the
> corresponding PHOT/HOT chain must also be eligible for cleanup, or all
> indexes must have been updated later in the chain before any visible
> tuples.

This sounds like it might be prohibitively painful. Adding effectively
unremovable bloat to remove other bloat is not an uncomplicated
premise. I think you'd really need a way to fully remove this as part of
vacuum for this to be viable.

Greetings,

Andres Freund

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