Description

Kafka Connect suites many different use-cases. However some advanced use-cases require a performance tuning. This part is not well covered in our documentation.
Here is what we have https://clickhouse.com/docs/integrations/kafka/clickhouse-kafka-connect-sink#connect-fetch-vs-connector-poll

This issue is to document:

• Overview performance tuning. When it is needed when it is not.
• Tell about options and their pitfalls
• Add known recommendations