How to schedule kafka consumer properly in apache nifi?

[#1]

I'm trying to use one consumer continuously read data from kafka. How should I set the scheduling options?

I have read the User Guide, but I can not figure out how to set the run schedule and run duration if I need the consumer run continuously.

[#2]

@sunxingbin sunxingbin

Schedule the processor with

Scheduling Strategy -> Timer Driven
Run Schedule -> 0 sec

then processor will run continuously and read data from Kafka topic.