Given FLINK 3311 & 3332, I am wondering it would be possible, without idempotent counters in Cassandra, to deliver on an exactly once sink into Cassandra. I do note that the verbiage/disc2 in 3332 does warn the user that this is not exactly "exactly once" sink.
However my question has to do with whether having idempotent counters and a Data model that enables all other idempotent operations are a necessary prerequisite to exactly once semantics in flink. Asked a different way, what source and sink would enable a end-to-end exactly - once semantics, in the current state-of-the-art, with Flink in the middle. Thanks Milind
