It’s painful how much data rules the world

On September 15th, 2021, after more than 18 months, I was finally able to give a talk in person. My conference schedule did not really go down during the pandemic, […]

DataFriday: manipulating the schemas of Spark dataframes

In this fifth episode of DataFriday, I will dig into the schema linked to each dataframe in Apache Spark. I will rename columns, create columns, and analyze the result. I […]

DataFriday: extracting metadata from photos

Following episode 3, where I talked about metadata in relational databases, this week, I am talking about metadata as found in digital photography (and specifically EXIF). Wikipedia defines EXIF as […]

DataFriday: what is Metadata?

In this episode, I will explain what is metadata, at least, some metadata, more specifically metadata on relational databases. It’s a quick introduction. I will also run a small Java […]

DataFriday: basic ETL ops with Apache Spark

In this episode, you will learn about doing a basic ETL (extract, transform, and load) operation using Apache Spark. You will load a basic CSV file with Apache Spark, make […]

How I built the perfect data science team

When I assembled my first data science team, the term was barely getting printed in the Harvard Business Review. I had no clue that I was building a team pioneering […]

Spark in Action’s Chapter Eleven on Working with SQL is in MEAP

A new chapter of Spark in Action, 2e, (formerly known as Spark with Java) is available. Chapter 11 is titled “Working with SQL”. In chapter 11, you will explore how […]