[SamReidHughes]

Yeah, no, the database being replicated "in a masterless fashion" doesn't help. The problem is that under some network partition conditions, you can't do some writes or any writes, unless you want to sacrifice resilience and/or consensus.

[twokei]

Why wouldn't there be failures only under a complete network partition? So long as one node in one partition may communicate with another node in another partition, then writes may still be performed.

Availability would be what is sacrificed in the advent that a node is partitioned away from the main network.

[SamReidHughes]

Only when that's true of those two nodes and no other disjoint subset of nodes.