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External Collection

2 articles · Page 1 of 1
Shuge Unlimited
Shuge Unlimited
Aug 16, 2026 · Databases

Milvus 3.0 External Tables: Patch‑Add Columns and Query Snapshots as Tables

This article dissects Milvus 3.0’s External Collection feature, explaining how function‑output fields extend source schemas, how additive‑only schema refresh patches manifests without moving source data, and how the milvus‑table format lets snapshots serve as zero‑copy external tables for both batch and serving workloads.

External CollectionMilvusSchema Refresh
0 likes · 19 min read
Milvus 3.0 External Tables: Patch‑Add Columns and Query Snapshots as Tables
Shuge Unlimited
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.

External CollectionLakehouseMilvus
0 likes · 17 min read
How Milvus 3.0 Queries External Lakehouse Files Without Copying Data