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From: Tom Lane <[email protected]>
To: Alvaro Herrera <[email protected]>
Cc: Chris Browne <[email protected]>
Cc: [email protected]
Subject: Re: [DOCS] Autovacuum and XID wraparound
Date: Wed, 16 May 2007 01:20:56 -0400
Message-ID: <[email protected]> (raw)
In-Reply-To: <[email protected]>
References: <[email protected]>
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Alvaro Herrera <[email protected]> writes:
> Tom Lane wrote:
>> I had the idea we were doing that already --- at least I'm pretty sure I
>> remember it being discussed.  But I see it's not being done in HEAD.

> Patch to do it attached.  I am thinking we can do something similar in
> CLUSTER as well.

Umm ... you'd have to be a lot more conservative in CLUSTER now that
it's MVCC-safe.  I don't say that CLUSTER can't push up relfrozenxid,
but there's something wrong if CLUSTER and TRUNCATE are trying to
push it up the same amount.

			regards, tom lane

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