Past Memory Big Data

Nov 12, 2025 · Big Data

How Uber Upgraded Over 2 Million Spark Jobs from 2.4 to 3.3

Uber migrated more than two million daily Spark applications from version 2.4 to 3.3, detailing the motivations, architecture, four-step migration process, custom tools like Polyglot Piranha and Iron Dome, and the resulting performance, cost, and productivity gains.