Can I do Joins across Event Streams ?

[Spark Enthusiast]

Hi,
I have to build a system that reacts to a set of events. Each of these events 
are separate streams by themselves which are consumed from different Kafka 
Topics and hence will have different InputDStreams.
Questions:
Will I be able to do joins across multiple InputDStreams and collate the output 
using a single Accumulator?These Event Streams can have their own frequency of 
occurrence. How will I be able to co-ordinate the out of sync behaviour?