Apache Spark v3.0.0 has been released on June 18th, 2020, just before Spark + AI Summit 2020, which is being held virtually this year (like most big conferences). Spark v3 […]
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 […]
DataFriday: load a CSV file with Apache Spark
Starting today, I will host a weekly live show about data. You may join, attend “live,” and ask questions as I go through a data-oriented topic. For now, the topic […]
Spark in Action, Second Edition MEAP Update
I just wanted to share with you the latest update on Spark in Action, second edition What’s new? Chapter 12, “Transforming your data“ Chapter 13, “Transforming entire documents“ Appendix K, […]
My trip to the Moon… and Mars (part 2)
This article follows my previous post on my trip to NASA in Langley, Va. in early March 2019. This is the second and last part of this article. Before going […]
My trip to the Moon… and Mars (part 1)
I like to use π day, to remember a few things about science and technology that influence who I am. This year, Ï€ day is perfect for that. Let me tell […]
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 […]