"Cassandra lightweight transactions are not even close to correct. Depending on throughput, they may drop anywhere from 1-5% of acknowledged writes–and this doesn’t even require a network partition to demonstrate. It’s just a broken implementation of Paxos. In addition to the deadlock bug, these Jepsen tests revealed #6012 (Cassandra may accept multiple proposals for a single Paxos round) and #6013 (unnecessarily high false negative probabilities)."
That's four bugs independent of the conflict resolution issue.
