Migrating 13,000 Iceberg Tables in 4 hours to Glue Catalog

At midnight on September 16th, Jason Reid (data engineering advocate at Databricks) messages me on LinkedIn saying, “Tabular will be sunsetted in 24 hours. I hope you have migrated.” My lazy ass had not.

Panic immediately set in. I had 13,000 tables, 2,200 schemas and 3 terabytes of data managed by Tabular that my students had generated over the last tw…