Connect to a Spark session
castKafkaStreamAsString(streamObj)Spark Structured Streaming DataFrame returned by read.stream function with source = 'kafka'
Updated Spark Structured Streaming DataFrame with key, value, topic and timestamp from the Kafka stream
Takes in a Structured Stream from Kafka created from read.stream(source = 'kafka', ...) and returns
a Structured Streaming DataFrame where the key and value from the Kafka stream are cast to string
Other Spark utilities: convertKafkaValueFromJson,
sparkRSessionCreateIfNotPresent