Inside the Puffin File Format
September 02, 2026The Puffin file format inside out, byte by byte, covering Theta sketches for distinct values and deletion vectors.
4 posts tagged with "Deletion Vectors"
How Iceberg V3 Deletion Vectors Fixed Merge-on-Read for Streaming Tables
August 04, 2026How Iceberg V3 deletion vectors replaced accumulating positional delete files and made merge-on-read viable for streaming and CDC tables.
Why Iceberg V4 Wants to Retire Equality Deletes, and What Streaming Teams Should Do About It
July 28, 2026Equality deletes made streaming upserts into Iceberg practical at the cost of read performance. V4 proposes retiring them in favor of deletion vectors with an async conversion path.
Iceberg v3 Deletion Vectors and Faster DML
July 13, 2026An in-depth exploration of iceberg v3 deletion vectors and faster dml