Databricks MLOps Stacks v0.5

Major Features

Deprecated & Removed

• Migrated off FeatureStoreClient to the Feature Engineering client (databricks.feature_engineering) — action needed for existing stacks, as the old client is being sunset by Databricks
• Removed non-Unity-Catalog code paths — UC is now the only supported model registry
• Removed classic cluster (new_cluster/job_clusters) definitions in favor of serverless compute
• Removed deprecated MLflow Recipes support
• Flattened project directory structure (removed nested notebooks/ subdirectories)

New Features

• Upgraded to MLflow 3.x across training, validation, and deployment
• All jobs now run on serverless compute by default (environment_key/environments)
• Added GitLab CI/CD support

What's Changed

• Feature eng dev mmt by @hengrumay in #157
• Model validation for FS models by @aliazzzdat in #165
• Fix dead links by @arpitjasa-db in #166
• Update Database name for Feature Engineering notebooks by @arpitjasa-db in #171
• Fix self-referencing filename by @kriscon-db in #177
• Explicitly set data security mode to SINGLE_USER, fix broken tests by @shichengzhou-db in #179
• Adding Gitlab support by @valx in #174
• Update python version from 3.8 to 3.10 in run-tests workflow by @mniels17 in #178
• Add bundle UUID and other metadata by @arpitjasa-db in #185
• Fix deploy pipeline failure ("staging: no such target...") by @ThomasHenckel in #187
• Add conditionals for catalog variable by @arpitjasa-db in #188
• Fix target naming in GitHub Actions files by @arpitjasa-db in #191
• Remove UC + GCP restriction by @arpitjasa-db in #193
• Updates to readme, and batch inference by @ThomasHenckel in #192
• Include notes and reference link on promoting model for stack-customization by @hengrumay in #200
• Pass python-version as string for GitHub Actions by @JaiLaff in #207
• Update MLflow 3.0 deprecated variable "higher_is_better" to "greater_is_better" by @isaacdtaylor in #210
• Simplify project structure — flatten notebooks, remove boilerplate by @veenaramesh in #219
• Remove deprecated MLflow Recipes support by @veenaramesh in #220
• Remove Unity Catalog conditionals — UC is the only model registry by @veenaramesh in #221
• Migrate from FeatureStoreClient to FeatureEngineeringClient by @veenaramesh in #222
• Upgrade to MLflow 3.x and simplify validation by @veenaramesh in #223
• Switch all job compute to serverless by @veenaramesh in #224
• Update docs for renamed products (Git folders, Lakeflow Jobs) by @janniklasrose in #225
• Bump stacks_version to 0.5 by @veenaramesh

New Contributors

• @hengrumay made their first contribution in #157
• @aliazzzdat made their first contribution in #165
• @kriscon-db made their first contribution in #177
• @shichengzhou-db made their first contribution in #179
• @valx made their first contribution in #174
• @mniels17 made their first contribution in #178
• @ThomasHenckel made their first contribution in #187
• @JaiLaff made their first contribution in #207
• @isaacdtaylor made their first contribution in #210
• @veenaramesh made their first contribution in #219
• @janniklasrose made their first contribution in #225

Full Changelog: v0.4...v0.5