This is about Kafka Receiver IF you are using Spark Streaming
Ps: that book is now behind the curve in a quite a few areas since the release of 1.3.1 – read the documentation and forums
In the O'reilly book Learning Spark Chapter 10 section 24/7 Operation
It talks about 'Receiver Fault Tolerance'
I'm unsure of what a Receiver is here, from reading it sounds like when you submit an application to the cluster in cluster mode i.e. --deploy-mode cluster the driver program will run on a Worker and this case this Worker is seen as a Receiver because it is consuming messages from the source.
Is the above understanding correct? or is there more to it?