On Wed, Nov 22, 2017 at 5:55 AM, Robert Haas <robertmhaas@gmail.com> wrote:
> I have been of the opinion all along that progress monitoring needs to
> report facts, not theories. The number of tuples read thus far is a
> fact, and is fine to report for whatever value it may have to someone.
> The number of tuples that will be read in the future is a theory, and
> as you say, progress monitoring is most likely to be used in cases
> where theory and practice ended up being very different.
+1. We should never as well enter in things like trying to estimate
the amount of time remaining to finish a task [1].
[1]: https://www.xkcd.com/612/
--
Michael
