https://morningman.github.io/The personal blog of Mingyu Chen (Rayner), featuring technical deep dives into data systems, open-source development, software architecture, and occasional personal musings. 2026-04-26T00:32:02-07:00 Mingyu Chen(Rayner) https://morningman.github.io/ Jekyll © 2026 Mingyu Chen(Rayner) /assets/img/favicons/favicon.ico /assets/img/favicons/favicon-96x96.png 2026-04-24T10:00:00-07:00 2026-04-24T17:55:04-07:00 https://morningman.github.io/posts/doris-41-vector-index/ Mingyu Chen(Rayner)

Apache Doris 4.1 adds native vector search: IVF and disk-tiered SPANN indexes, PQ quantization, and hybrid BM25+vector queries planned in a single SQL.

2026-04-23T19:00:00-07:00 2026-04-23T21:35:29-07:00 https://morningman.github.io/posts/doris-lance-rust-integration/ Mingyu Chen(Rayner)

How Apache Doris embeds a Rust-based Lance reader in its C++ BE via the Arrow C Data Interface, a single-threaded Tokio runtime, and Corrosion.

2026-04-23T15:00:00-07:00 2026-04-24T00:32:08-07:00 https://morningman.github.io/posts/segment-v3-vs-open-formats/ Mingyu Chen(Rayner)

How Parquet's Flatbuffer proposal, Lance, and Doris segment v3 each tackle columnar footer explosion when wide tables push metadata from KB into MB.

2026-04-19T10:00:00-07:00 2026-04-23T18:23:19-07:00 https://morningman.github.io/posts/apache-doris-41-iceberg-v3-lakehouse/ Mingyu Chen(Rayner)

Apache Doris 4.1 adds Iceberg V3 support: run UPDATE, DELETE, and MERGE INTO on Iceberg tables with Deletion Vectors and Row Lineage, all from SQL.

2026-04-13T17:00:00-07:00 2026-04-23T18:23:19-07:00 https://morningman.github.io/posts/beyond-json-variant-data-types/ Mingyu Chen(Rayner)

JSON stopped being a supporting format and became core business data. Why analytics engines need Variant types to keep up — and how Snowflake, Doris, and Iceberg are solving it.