Câu 4: CCDAK: Confluent Certified Developer for Apache Kafka

Which is true about topic compaction?

1. A. When a client produces a new event with an existing key, the old value is overwritten with the new value in the compacted log segment.
2. B. When a client produces a new event with an existing key, the broker immediately deletes the offset of the existing event.
3. C. Topic compaction does not remove old events; instead, when clients consume events from a compacted topic, they store events in a hashmap that maintains the latest value.
4. D. Compaction will keep exactly one message per key after compaction of inactive log segments. — đáp án hiện tại