Chapter 3. External Data Sources

One of the strengths of Spark is that it provides a single runtime that can connect with various underlying data sources.

In this chapter, we will connect to different data sources. This chapter is pided into the following recipes:

• Loading data from the local filesystem
• Loading data from HDFS
• Loading data from HDFS using a custom InputFormat
• Loading data from Amazon S3
• Loading data from Apache Cassandra
• Loading data from relational databases