Shuge Unlimited

Jul 19, 2026 · Databases

How Milvus 3.0 Queries External Lakehouse Files Without Copying Data

Milvus 3.0 introduces an External Collection that treats Parquet and other lakehouse files as a read‑only query view, detailing how external_source and external_spec are validated, how stable file lists are built, how the two‑stage refresh recomputes segment mappings, and how virtual primary keys and milvus‑table snapshots enable seamless querying without data duplication.