Based on my work supporting a variety of customers I would say that partitions are extremely common.
Don't focus on network partitions (or hardware based partitions) because that is only one potential cause of a partition. Partitions are legion. Any system that implements automated fail over has to account for them in a way that produces acceptable results for the use case.
Don't focus on network partitions (or hardware based partitions) because that is only one potential cause of a partition. Partitions are legion. Any system that implements automated fail over has to account for them in a way that produces acceptable results for the use case.