Lakehouse Replay
Shadow-runs a sample of read-only serverless queries against a coming runtime version to catch regressions.
Why it is worth watching
It changes how a runtime upgrade is planned, from hoping to measuring.
What Public Preview promises
Open to everyone and supported for production use, though it can still change. On by default, and an admin can turn it off.
| Who can use it | Everyone |
|---|---|
| Production use | Yes |
| Support | The support team |
| On by default | Yes, with an opt-out |
The definitions are Databricks' own, on its release types page. The label on this page is the one the feature's documentation states, last checked on 13 Sept 2026.
Where to read more
We have not written a concept about it yet: while it is in preview the documentation is the place to read, and it moves faster than a page here would.