Does CDC topic support Kafka API?

[zhangruiddn]

Hi, I want to set up a ingestion pipeline streaming CDC changes of YDB into ClickHouse. ClickHouse has Kafka table engine that acts as a Kafka client (with client lib: https://github.com/confluentinc/librdkafka). Based on https://ydb.tech/docs/en/reference/kafka-api/examples?version=v25.3, YDB topics should support Kafka client. I tested this on regular YDB topics and it works. However, for CDC topics (created by YDB when adding changefeed), the Kafka client throws error like
% ERROR: Topic users/feed1 [0] error: Failed to fetch committed offset for group "my-group" topic users/feed1 [0]: Broker: Unknown topic or partition

Is this a known limitation for CDC topics, or I miss some settings here? Thank you for your help!