On Sun, Feb 28, 2010 at 6:02 AM, Gokulakannan Somasundaram
<gokul007@gmail.com> wrote:
> So just with a addition of 8 bytes per tuple, we can have the snapshot
> stored with the index. Can someone please comment on this?
The transaction information on tuples take 18 bytes plus several info
bits. It's possible just storing a subset of that would be useful but
it's unclear. And I think it would complicate the code if it had to
sometimes fetch the heap tuple to get the rest and sometimes doesn't.
I think you have to take up a simpler project as a first project. This
is a major overhaul of transaction information and it depends on
understanding how a lot of different areas work -- all of which are
very complex tricky areas to understand.
--
greg
