Mastering Scala Machine Learning

Other serialization formats

I do recommend the Parquet format for storing the data. However, for completeness, I need to at least mention other serialization formats, some of them like Kryo will be used implicitly for you during Spark computations without your knowledge and there is obviously a default Java serialization.

Tip

Object-oriented approach versus functional approach

Objects in object-oriented approach are characterized by state and behavior. Objects are the cornerstone of object-oriented programming. A class is a template for objects with fields that represent the state, and methods that may represent the behavior. Abstract method implementation may depend on the instance of the class. In functional approach, the state is usually frowned ...