Simon Riggs wrote:
On Fri, 2007-09-07 at 06:36 +0200, Florian G. Pflug wrote:
Tom Lane wrote:
"Florian G. Pflug" <[EMAIL PROTECTED]> writes:
- I actually think with just a little bit of more work, we
can go even further, and get rid of the ReadNewTransactionId() call
completely during snapshotting.
[ squint... ]  This goes a bit far for me.  In particular, I think this
will fail in the edge case when there are no live XIDs visible in
ProcArray.  You cannot go back and do ReadNewTransactionId afterward,
at least not without re-scanning the ProcArray a second time, which
makes it at best a questionable win.
Why would it?

I think the additional suggestion goes a bit too far. You may be right,
but I don't want to change the transaction system in advanced ways this
close to the next release. We may have difficulty spotting bugs in that
thinking during beta.

Ok, those were two clear votes against doing this, so I'll stop
arguing ;-). I do think that we should have another look at this when
8.4 opens, though.

greetings, Florian Pflug

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