Major Description
We use multiple DStreams coming from different Kafka topics in a Streaming application.
Some settings like maxrate and backpressure enabled/disabled would be better passed as config to KafkaUtils.createStream and KafkaUtils.createDirectStream, instead of setting them in SparkConf.
Being able to set a different maxrate for different streams is an important requirement for us; we currently work-around the problem by using one receiver-based stream and one direct stream.
We would like to be able to turn on backpressure for only one of the streams as well.
