January 2019
Beginner to intermediate
154 pages
4h 31m
English
Content preview from Apache Spark Quick Start Guide
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Spark RDD
Resilient Distributed Datasets (RDDs) are the basic building block of a Spark application. An RDD represents a read-only collection of objects distributed across multiple machines. Spark can distribute a collection of records using an RDD and process them in parallel on different machines.
In this chapter, we shall learn about the following:
-
- What is an RDD?
- How do you create RDDs?
- Different operations available to work on RDDs
- Important types of RDD
- Caching an RDD
- Partitions of an RDD
- Drawbacks of using RDDs
The code examples in this chapter are written in Python and Scala only. If you wish to go through the Java and R APIs, you can visit the Spark documentation page at https://spark.apache.org/.
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