On Tue, Jun 19, 2018 at 8:52 PM, Amit Kapila <amit.kapila16@gmail.com> wrote:
> Both values will be present in the index, but the old value will be
> delete-marked. It is correct that we can't remove the value (index
> tuple) from the index until it is truly dead (not visible to anyone),
> but during a delete or index-update operation, we need to traverse the
> index to mark the entries as delete-marked. See, at this stage, I
> don't want to go in too much detail discussion of how delete-marking
> will happen in zheap and also I am not sure this thread is the right
> place to discuss details of that technology.
I don't understand, but okay. I can provide feedback once a design for
delete marking is available.
--
Peter Geoghegan