On Sat, Apr 17, 2010 at 11:13 AM, Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us> wrote:
> Simon Riggs <simon(at)2ndQuadrant(dot)com> writes:
>> AFAICS the example you give isn't correct.
>> We would lay out the values like this
>> W-3 W-2 W-1 W 3 4 5
>> where W is the wrap value
> Stop right there, you're already failing to think clearly. There is no
> unique "wrap value", all values act the same in circular XID space.
Or to put it a different way, what happens when the "wrap value"
changes? An array that was in order under one wrap value can cease to
be in order under another.
In response to
pgsql-hackers by date
|Next:||From: Dave Page||Date: 2010-04-17 16:04:52|
|Subject: Re: Invitation to connect on LinkedIn|
|Previous:||From: Tom Lane||Date: 2010-04-17 15:13:46|
|Subject: Re: testing HS/SR - 1 vs 2 performance |