This is Part 15, the final article of a 15-part Apache Iceberg Masterclass. Part 14 covered hands-on Dremio Cloud. This article covers the three migration strategies and how to execute a zero-downtime migration using the view swap pattern.

Most organizations do not start with Iceberg. They have years of data in Hive tables, data warehouses, CSV files, databases, and Parquet directories. Moving this data to Iceberg is not an all-or-nothing project. The best migrations happen incrementally, one dataset at a time, with no disruption to existing consumers.

Table of Contents

What Are Table Formats and Why Were They Needed?

The Metadata Structure of Current Table Formats