WebLogic event server: a lightweight, modular application server for event processing. - Seth White; Alexandre Alves; David Rorke (DEBS, 2008)

Impala: A Modern, Open-Source SQL Engine for Hadoop. - Marcel Kornacker; Alexander Behm; Victor Bittorf; Taras Bobrovytsky; Casey Ching; Alan Choi; Justin Erickson; Martin Grund; Daniel Hecht; Matthew Jacobs; Ishaan Joshi; Lenni Kuff; et al. (CIDR, 2015)