Can I increase replica and task count on running service?

I have currently service running on druid to read from kafka with 4 task count and 4 replicas. Can I change that without restarting or stopping the process?

Thank you

Yes you can .
Submit the updated supervisor spec and KIS supervisor will take care of other stuff. Please read this before proceeding-
https://druid.apache.org/docs/latest/development/extensions-core/kafka-ingestion.html#updating-existing-supervisors

Thanks and Regards,
Vaibhav

Thank you very much for the reply