Huolala Tech

Aug 4, 2020 · Big Data

How to Accelerate Hive UDFs by Caching Large Geo Data: A 140× Speed Boost

To dramatically improve Hive UDF performance when converting coordinates to administrative districts, this article compares two implementation strategies, details the technical challenges of repeatedly loading a 157 MB Geo data file, and presents a static‑cached solution that reduces query time from seconds to milliseconds, achieving roughly a 140‑fold speed increase.