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Tag: open table formats

2026-07-06 • Alex Merced

Delete Files vs Deletion Vectors in Apache Iceberg: How V3 Rewrote the Economics of Changing Data

Iceberg v2 delete files vs v3 deletion vectors. How Roaring bitmaps and per-file vectors transformed merge-on-read perfo...

2026-07-06 • Alex Merced

The Variant Type in Apache Iceberg: How Shredding Turns Messy JSON Into Fast Analytics

Apache Iceberg v3 introduces the Variant type for flexible JSON storage with columnar performance. Learn how shredding e...

2026-07-06 • Alex Merced

The State of Apache Iceberg v4 in July 2026: What the Dev List Tells Us About the Format's Next Chapter

What the Iceberg v4 dev list tells us about adaptive metadata trees, single-file commits, column updates, and the format...

2026-07-06 • Alex Merced

The State of Apache Parquet in 2026: The Quiet Format Enters Its Loudest Decade

Apache Parquet in 2026 — variant types, geospatial, ALP encoding, footer redesign, the versioning debate, and how the de...

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