AsyncAPI channel · ClickHouse · ClickHouse Kafka Table Engine (Consumer-Side Streaming)

{kafka_topic}

A Kafka topic listed in the Kafka() engine's kafka_topic_list parameter. ClickHouse opens a consumer (or kafka_num_consumers parallel consumers) against this topic under the consumer group named in kafka_group_name and decodes each message using the format named in kafka_format.

Open source AsyncAPI → All ClickHouse channels ClickHouse provider profile
Provider: ClickHouse AsyncAPI: v3.0.0 Spec: ClickHouse Kafka Table Engine (Consumer-Side Streaming) Operations: 1 Messages: 1

Channel address

{kafka_topic}

Parameters

Operations

receive
consumeFromKafka
ClickHouse, on behalf of a CREATE TABLE ... ENGINE = Kafka(...) definition, polls the configured topic(s) and decodes each record according to kafka_format. A downstream MATERIALIZED VIEW typically mo

Messages

KafkaRecord
A single Kafka record consumed by the ClickHouse Kafka engine and exposed as a row with virtual columns.
Content-Type: application/octet-stream

About AsyncAPI

The AsyncAPI specification describes event-driven APIs the way OpenAPI describes request/response APIs. A channel is the named pipe — a webhook URL, a Kafka topic, a WebSocket route, an MQTT subject — that producers and consumers publish or subscribe to. Each channel carries one or more messages with structured payloads, and an operation declares whether a given party sends or receives on that channel.

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