Advanced Lakehouse Management With The LakeKeeper Iceberg REST Catalog

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Apr 21, 2025

Victor Kessler, co-founder of Vakama and developer of Lakekeeper, dives into the world of advanced lakehouse management with a focus on Apache Iceberg. He discusses the pivotal role of metadata in data actionability and the evolution of data catalogs. Victor highlights innovative features of Lakekeeper, like integration with OpenFGA for access control and its deployment using Rust on Kubernetes. He also addresses the challenges of migrating data catalogs and the importance of community involvement in open-source projects for better data management.

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ANECDOTE

Victor’s Data Career Start

Victor Kessler started his data career at SAP using basic tools like Excel and Access for data analysis.
His journey progressed through data warehouses to co-founding Vakama and developing Lakekeeper.

INSIGHT

Metadata's Critical Role

Metadata has been undervalued compared to data in traditional lakehouses, causing challenges like outdated ownership and governance.
Making metadata actionable is key to improving data management, with Iceberg and catalogs playing a central role.

INSIGHT

Catalogs Enforce Access Control

Catalogs are evolving from mere data pointers to enforce fine-grained access control using technologies like OpenFGA.
Lakekeeper extends catalog usage beyond tables to AI metadata and data volumes for integrated governance.

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Summary
In this episode of the Data Engineering Podcast Viktor Kessler, co-founder of Vakmo, talks about the architectural patterns in the lake house enabled by a fast and feature-rich Iceberg catalog. Viktor shares his journey from data warehouses to developing the open-source project, Lakekeeper, an Apache Iceberg REST catalog written in Rust that facilitates building lake houses with essential components like storage, compute, and catalog management. He discusses the importance of metadata in making data actionable, the evolution of data catalogs, and the challenges and innovations in the space, including integration with OpenFGA for fine-grained access control and managing data across formats and compute engines.

Announcements

Hello and welcome to the Data Engineering Podcast, the show about modern data management
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Your host is Tobias Macey and today I'm interviewing Viktor Kessler about architectural patterns in the lakehouse that are unlocked by a fast and feature-rich Iceberg catalog

Interview

Introduction
How did you get involved in the area of data management?
Can you describe what LakeKeeper is and the story behind it?
- What is the core of the problem that you are addressing?
There has been a lot of activity in the catalog space recently. What are the driving forces that have highlighted the need for a better metadata catalog in the data lake/distributed data ecosystem?
- How would you characterize the feature sets/problem spaces that different entrants are focused on addressing?
Iceberg as a table format has gained a lot of attention and adoption across the data ecosystem. The REST catalog format has opened the door for numerous implementations. What are the opportunities for innovation and improving user experience in that space?
What is the role of the catalog in managing security and governance? (AuthZ, auditing, etc.)
- What are the channels for propagating identity and permissions to compute engines? (how do you avoid head-scratching about permission denied situations)
Can you describe how LakeKeeper is implemented?
- How have the design and goals of the project changed since you first started working on it?
For someone who has an existing set of Iceberg tables and catalog, what does the migration process look like?
What new workflows or capabilities does LakeKeeper enable for data teams using Iceberg tables across one or more compute frameworks?
What are the most interesting, innovative, or unexpected ways that you have seen LakeKeeper used?
What are the most interesting, unexpected, or challenging lessons that you have learned while working on LakeKeeper?
When is LakeKeeper the wrong choice?
What do you have planned for the future of LakeKeeper?

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Parting Question

From your perspective, what is the biggest gap in the tooling or technology for data management today?

Closing Announcements

Thank you for listening! Don't forget to check out our other shows. Podcast.__init__ covers the Python language, its community, and the innovative ways it is being used. The AI Engineering Podcast is your guide to the fast-moving world of building AI systems.
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The intro and outro music is from The Hug by The Freak Fandango Orchestra / CC BY-SA