Detail
In a Strong Consistency cluster with replication-factor 2, if the tie-breaker node is always quiesced and it and another node leaves the cluster at the same time, can we still get unavailable_partitions?Answer
Yes, we can get unavailable partitions. Our documentation on Quiescing a node states that:
In strong-consistency enabled namespaces, quiescing replication-factor number of nodes or more will force masterhood handover (after migrations complete) but will result in unavailability when the nodes are eventually shut down (unless if all nodes quiesced are in the same rack).
The same applies to nodes that are out of the cluster and not just quiesced.