Featured in Domain Arrivals · 2026-08-15
DataYatri: Spark, with the hood open
An interactive learning site for Apache Spark and Databricks, with guided lessons, interview tracks, and simulators for execution, shuffles, joins, skew, and AQE.
Why it surfacedDataYatri turns the usually invisible machinery of a Spark job into something readers can step through: Driver, jobs, stages, tasks, and shuffle. It offers 23 lessons and five simulators without requiring an account, including a flagship walkthrough of `groupBy + show()` in 11 guided steps.
Continue into the edition
The Two-Tonne Temperature Problem
August 15’s newborn domains include a live-aboard hydrogen airship with a two-tonne lift problem, a Japanese toolbox that explains its assumptions, an advisory-by-advisory Hawaiʻi hurricane archive, and a wedding-gift game about ungrateful poultry.
This is one of 1,000 discoveries in the 2026-08-15 Domain Arrivals issue.