Kafka streams topology can define one or many SourceNode. The picture on official document < http://kafka.apache.org/0102/documentation/streams#streams_architecture_tasks > only draw one source node in some place: 1. Stream Partitions and Tasks 2. Threading Model 3. Local StateStore
And the topology has two source topics: topicA and topicB Should we change those picture above to two source node like the Architecture part?
