Although MongoDB claims in an undated article entitled "MongoDB and Jepsen"[65] that their database passed Distributed Systems Safety Research company Jepsen's

Although MongoDB claims in an undated article entitled "MongoDB and Jepsen"[65] that their database passed Distributed Systems Safety Research company Jepsen's tests, which it called “the industry’s toughest data safety, correctness, and consistency Tests”, Jepsen published an article in May 2020 stating that MongoDB 3.6.4 had in fact failed their tests, and that the newer MongoDB 4.2.6 has more problems including “retrocausal transactions” where a transaction reverses order so that a read can see the result of a future write.[66][67] Jepsen noted in their report that MongoDB omitted any mention of these findings on MongoDB's "MongoDB and Jepsen" page. from https://en.wikipedia.org/wiki/MongoDB#Bug_reports_and_criticisms https://en.wikipedia.org/wiki/MongoDB#Bug_reports_and_critic...