Re: [WIP] In-place upgrade

From: Zdenek Kotala <Zdenek(dot)Kotala(at)Sun(dot)COM>
To: Alvaro Herrera <alvherre(at)commandprompt(dot)com>
Cc: Robert Haas <robertmhaas(at)gmail(dot)com>, PostgreSQL-development <pgsql-hackers(at)postgresql(dot)org>
Subject: Re: [WIP] In-place upgrade
Date: 2008-11-26 15:18:35
Message-ID: 492D68CB.1020807@sun.com
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Alvaro Herrera napsal(a):
> Robert Haas escribió:
>
>> With respect to #4, I know that Alvaro submitted a draft patch, but
>> I'm not clear on whether that needs to be reviewed, because:
>>
>> - I'm not sure whether it's close enough to being finished for a
>> review to be a good use of time.
>> - I'm not sure how much you and Heikki have already reviewed it.
>> - I'm not sure whether this patch buys us anything by itself.
>
> I finished that patch, but I didn't submit it because in later
> discussion it turned out (at least as I read it) that it's considered to
> be unnecessary.
>

From pg_upgrade perspective, it is something what we will need do anyway.
Because TOAST_MAX_CHUNK_SIZE will be different in 8.5 (if you commit CRC). Then
we will need the patch for 8.5. It is not necessary for 8.3->8.4 upgrade because
TOAST_MAX_CHUNK_SIZE is same. And make this change into toast table now will
add unnecessary complexity.

Zdenek

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