Which statement is true about how exactly-once semantics (EOS) work in Kafka Streams?

Kafka Streams uses transactional producers to guarantee exactly-once semantics (EOS). This ensures that both the output records and state store updates are committed atomically, avoiding duplication or partial writes.

From Kafka Streams Documentation > Processing Guarantees:

“Kafka Streams leverages Kafka’s transactional APIs to commit the output records and internal state updates as a single atomic unit, thereby providing exactly-once semantics.”

Option A is incorrect because log compaction is not disabled for EOS.

Option C incorrectly describes a checkpointing system Kafka Streams does not use.

Option D refers to deduplication, which is not how EOS is achieved in Streams.