Esri/spatial-framework-for-hadoop — pull request #32 by randallwhitman (2013-07-15 23:43:19+00:00)
Title: ST_Geometry Aggregate Functions

ST_Aggr_ConvexHull, ST_Aggr_Intersection, and ST_Aggr_Union implemented and tested.
Dependency of ST_Aggr_Union on ListeningGeometryCursor in geometry-api-java - https://github.com/Esri/geometry-api-java/issues/18