On Fri, May 28, 2004 at 03:19:29PM -0400, Tom Lane wrote:
> We'd still need a plain CommandCounterIncrement facility, which means
> that actually a subtransaction would have to be a group of CIDs not just
> one.
Right, this is why I suggested runlength (the group is contiguous).
> So there'd also need to be a data structure showing the CIDs
> associated with each open subtransaction --- this is what you'd
> consult to go and set the "aborted" bits if the subxact rolls back.
Right. We only need to store the "borders" though. Not even that: only
the start, because the end is what is current at AbortSubTransaction()
time.
I'll try this.
--
Alvaro Herrera (<alvherre[a]dcc.uchile.cl>)
"El miedo atento y previsor es la madre de la seguridad" (E. Burke)
