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Apache Iceberg V3 Spec new features for more efficient and flexible data lakes

35 talatuyarer 3 8/11/2025, 5:07:34 PM opensource.googleblog.com ↗

Comments (3)

ahmetburhan · 20m ago

Cool to see Iceberg getting these kinds of upgrades. Deletion vectors and default column values sound like real quality-of-life improvements, especially for big, messy datasets. Curious to hear if anyone’s tried V3 in production yet and what the performance looks like.

hodgesrm · 1h ago

This Google article was nice as a high level overview of Iceberg V3. I wish that the V3 spec (and Iceberg specs in general) were more readable. For now the best approach seems to be read the Javadoc for the Iceberg Java API. [0]

[0] https://javadoc.io/doc/org.apache.iceberg/iceberg-api/latest...

talatuyarer · 1h ago

This new version has some great new features, including deletion vectors for more efficient transactions and default column values to make schema evolution a breeze. The full article has all the details.