Unity Catalog Migration Kit: Unity Catalog Migration Guide

Unity Catalog Migration Guide Unity Catalog Migration Kit — Datanest Digital https://datanest.dev Table of Contents Overview Prerequisites Phase 1: Assessment Phase 2: Infrastructure Setup Phase 3: Migration Planning Phase 4: Table Migration Phase 5: Permission Mapping Phase 6: Validation Phase 7: Cutover Phase 8: Decommission Troubleshooting FAQ Overview This guide walks through migrating a Databricks workspace from legacy Hive Metastore to Unity Catalog using the tools provided in this kit. The process is designed to be: Non-destructive — Source tables remain untouched throughout migration Incremental — Migrate in waves, validating each wave before proceeding Reversible — Rollback procedures exist for every phase (see rollback_procedures.md) Migration Strategies Strategy Best For Speed Risk DEEP CLONE Delta tables Fast Low CTAS Non-Delta tables (Parquet, CSV, JSON) Medium Low SYNC Incremental re-sync of Delta tables Fast Low The migration notebook automatically selects the best strat