SAP follows the concept of openness, hence there are many options to integrate Big Data with SAP.
The downside of this freedom of choice is choosing the right approach. Which products to use, involved technologies, the business needs, how to involve users.
- An open source minded person might do all the transformations in e.g. Apache Spark and load the results into Hana via SQL DataSets.
- A Hana team might connect to Hadoop using the Spark Connector.
- A SAP person might suggest using SAP Data Hub for everything.
All approaches have pros and cons. Navigating through this minefield needs lot of background knowledge and experience.