Coffee and Papers: Talking about trees

This is going to be a meetup in a cafe: grab some food, pick a favourite beverage and enjoy free, informal discussion about papers.

Rules: pick a paper from the following (or multiple) and leave a note that you'll be concentrating on it, have a rough idea about what's going on in the paper.

Subject: everything about trees and modern ways of writing (and reading) things to (and from) different types of disks.

LSM Trees: http://db.cs.berkeley.edu/cs286/papers/lsm-acta1996.pdf
Cache Oblivious B-Trees: http://erikdemaine.org/papers/FOCS2000b/paper.pdf

If anyone has suggestions as regards where to eat, please share it. Otherwise we'll pick a cafe/restaurant in Maxvorstadt or Schwabing or nearby.