Spark Streaming non functional requirements

[ashok34...@yahoo.com.INVALID]

Hello,
When we design a typical spark streaming process, the focus is to get 
functional requirements.
However, I have been asked to provide non-functional requirements as well. 
Likely things I can consider are Fault tolerance and Reliability (component 
failures).  Are there a standard list of non-functional requirements for Spark 
streaming that one needs to consider and verify all?
Thanking you