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This article presents a comprehensive overview of Meta's open‑source Velox query execution engine, detailing its architecture, vectorized execution model, memory‑pool hierarchy, arbitrator and allocator designs, spilling techniques, and future development plans for large‑scale data processing.
This article introduces Apache Doris 1.0, detailing its simplified architecture, high‑concurrency support, MPP execution engine, vectorized engine, memory‑controlled stability, multi‑source integration, upcoming lake‑house unification, storage‑compute separation, real‑time ingestion, and community growth.
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