Deletion Vectors are a soft‑delete mechanism in Delta Lake that enables Merge‑on‑Read (MoR) behavior, letting update/delete/merge operations mark row positions as removed without rewriting the underlying Parquet files. This contrasts with the older Copy‑on‑Write (CoW) model, where even a single deleted record triggers rewriting of entire files YouTube+8docs.delta.io+8Medium+8. Supported since Delta Lake 2.3 (read-only), full […] The post What Are Deletion Vectors (DLV)? appeared f...
