Delta Lake Tutorial L6 โ€” RESTORE and Rollback Strategies (PySpark + Databricks 2026)

Learning Journal Guide 21 days ago

Description

In this video, we cover Delta Lake's RESTORE command โ€” the safety net every production
Delta Lake engineer needs to know. You will learn how to recover from a bad write, a
failed job, or accidental deletes, and how RESTORE relates to Time Travel and VACUUM
retention covered in earlier videos.

This is video L6 in the Delta Lake Complete Guide 2026 series.

What we cover in this video:
โ–ธ What RESTORE does and how it differs from Time Travel queries
โ–ธ Restoring a table to a previous version
โ–ธ Restoring a table to a specific timestamp
โ–ธ How RESTORE interacts with the transaction log
โ–ธ Why RESTORE only works within your VACUUM retention window
โ–ธ Real-world rollback scenarios โ€” bad MERGE, accidental DELETE, failed schema change
โ–ธ Best practices for safe rollback in production

By the end of this video, you will have a clear recovery playbook for when something
goes wrong in a Delta Lake pipeline.

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๐Ÿ”— LINKS
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โ–ธ Delta Lake Complete Guide 2026 playlist: [playlist link]
โ–ธ L1 โ€” What is Delta Lake and why it matters on AWS: [video link]
โ–ธ L2 โ€” Creating and managing Delta tables: [video link]
โ–ธ L3 โ€” Batch and streaming reads and writes: [video link]
โ–ธ L4 โ€” Time Travel: [video link]
โ–ธ L5 โ€” VACUUM, OPTIMIZE and Z-Ordering: [video link]
โ–ธ Databricks on AWS course (coming soon): [course link]
โ–ธ Generative AI for Data Engineers course: www.scholarnest.com

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๐Ÿ“Œ ABOUT THIS SERIES
โ”โ”โ”โ”โ”โ”โ”โ”โ”โ”โ”โ”โ”โ”โ”โ”โ”โ”โ”โ”โ”โ”โ”โ”โ”
The Delta Lake Complete Guide 2026 is a free, structured 11-part series for data
engineers who want to go beyond the basics. Every video is recorded as part of a full
Databricks on AWS course โ€” real engineering depth, not simplified demos.

New videos every week. Subscribe and hit the bell so you don't miss any part of the series.

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๐Ÿ‘ค ABOUT THE INSTRUCTOR
โ”โ”โ”โ”โ”โ”โ”โ”โ”โ”โ”โ”โ”โ”โ”โ”โ”โ”โ”โ”โ”โ”โ”โ”โ”
Data engineer and architect with 25 years of industry experience. I create self-paced
courses on Apache Spark, Databricks, Kafka, and Generative AI for data engineers.

๐Ÿ“บ YouTube: Learning Journal (you're already here!)
๐ŸŒ Website: www.scholarnest.com

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