CockroachDB is a distributed, scale-out SQL database which relies on hybrid logical clocks to provide serializability, given semi-synchronized node clocks. In this Jepsen analysis, we’ll discuss multiple serializability violations in CockroachDB beta-20160829 through beta-20160908. As a result of our collaboration, fixes for these issues are included in beta-20160915 and beta-20161013. This work w