Part 9 - Mirror migration - Hive to Iceberg Tables Migration eLearning Module

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Description:
In this video, we explore the process of migrating from Hive to Iceberg using a method known as table mirroring. This involves writing data simultaneously to both the existing Hive tables and the new Iceberg tables. By running duplicate pipelines, you maintain the full history in Hive while ensuring the latest data is available in Iceberg. We'll cover the advantages of this approach, such as minimal disruption to users and applications, as well as the steps for backfilling historical data to complete the migration. This strategy allows for thorough testing and validation before fully transitioning to Iceberg, optimizing performance and cost efficiency.