Getting Started with Spark (part 3) – UDFs & Window functions

This post attempts to continue the previous introductory series “Getting started with Spark in Python” with the topics UDFs and Window Functions. Unfortunately it stayed marinating in my Word press for quite a while (was already more less 70% complete) and only now had the opportunity to complete it.

Note: For this post I’m using Spark 1.6.1. There are some minor differences in comparison to the new coming Spark 2.0, such as using a SparkSession object to initialize the Spark Context, instead of HiveContext as I do here. Nonetheless, the important parts are common in both.

Continue reading “Getting Started with Spark (part 3) – UDFs & Window functions”