Re: [PATCH][PROPOSAL] Refuse setting toast.* reloptions when TOAST table does not exist

From: David Steele <david(at)pgmasters(dot)net>
To: Nikolay Shaplov <dhyan(at)nataraj(dot)su>, Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us>
Cc: Alvaro Herrera <alvherre(at)alvh(dot)no-ip(dot)org>, Peter Eisentraut <peter(dot)eisentraut(at)2ndquadrant(dot)com>, Robert Haas <robertmhaas(at)gmail(dot)com>, "pgsql-hackers(at)postgresql(dot)org" <pgsql-hackers(at)postgresql(dot)org>
Subject: Re: [PATCH][PROPOSAL] Refuse setting toast.* reloptions when TOAST table does not exist
Date: 2018-04-10 12:55:52
Message-ID: 99a755a9-e2d0-1383-9272-7be0cab10a37@pgmasters.net
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On 1/25/18 12:27 PM, Nikolay Shaplov wrote:
> В письме от 25 января 2018 11:29:34 пользователь Tom Lane написал:
>> Alvaro Herrera <alvherre(at)alvh(dot)no-ip(dot)org> writes:
>>> Tom Lane wrote:
>>>> Well, maybe the right answer is to address that. It's clear to me
>>>> why that would happen if we store these things as reloptions on the
>>>> toast table, but can't they be stored on the parent table?
>>>
>>> Actually, Nikolay provided a possible solution: if you execute ALTER
>>> TABLE SET (toast.foobar = xyz), and a toast table doesn't exist, create
>>> one at that point.
>>
>> That adds a lot of overhead if you never actually need the toast table.
> I think this overhead case is not that terrible if it is properly warned ;-)
>
>> Still, maybe it's an appropriate amount of effort compared to the size
>> of the use-case for this.
> If you came to some final conclustion, please close the commiffest item with
> "Return with feedback" resolution, and I write another patch...

I think this patch should be marked Returned with Feedback since it
appears there is no consensus on whether it is useful or correct, so I
have done that.

If I got it wrong I'm happy to move it to the next CF in Waiting for
Author state instead.

Thanks,
--
-David
david(at)pgmasters(dot)net

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