Distributed aggregation for data-parallel computing: interfaces and implementations.

Yuan Yu Pradeep Kumar Gunda Michael Isard Distributed aggregation for data-parallel computing: interfaces and implementations. 247-260 2009 SOSP http://doi.acm.org/10.1145/1629575.1629600 conf/sosp/2009 db/conf/sosp/sosp2009.html#YuGI09