On 9/11/07, Heikki Linnakangas <[EMAIL PROTECTED]> wrote:
> We're only changing the offsetnumber part of it, which is 2 bytes. That
> shouldn't cross a hardware sector boundary on any reasonable hardware.
Not entirely true if we consider line pointer redirection, which involves
changing 4 bytes. You can argue that for quick pruning we don't do any
line pointer redirection though.
Also my worry about dealing with unreachable heap-only dead tuples
remain. We may need to do far more work to identify that they are not part
any reachable HOT chain and hence can be removed.