Geetika Gupta shows us some of the updates in Apache Spark 2.2:
The major addition to this release is Structured Streaming. It has been marked as production ready and its experimental tag has been removed.
Some of the high-level changes and improvements :
- 
Production ready Structured Streaming
 - 
Expanding SQL functionalities
 - 
New distributed machine learning algorithms in R
 - 
Additional Algorithms in MLlib and GraphX
 
Read on for more details.