Episode
SE Radio 741: Sahil Walia on Schema Changes and Data Migrations
Software Engineering Radio - the podcast for professional software developers · Oct 7, 2026 · 47 min
Sahil Walia, a senior technical architect at Snowflake, joins host Robert Blumen for a conversation about schema migration and data migration. Together, they discuss the basics of schema: do all data sets have schema?; what drives schema change?; are data migration and schema migration the same thing? Must they happen at the same time? They then talk about the challenges and failure modes of…