AnalyticDB: Real-time OLAP Database System at Alibaba Cloud. - Chaoqun Zhan; Maomeng Su; Chuangxian Wei; Xiaoqiang Peng; Liang Lin; Sheng Wang 011; Zhe Chen; Feifei Li 001; Yue Pan; Fang Zheng 017; Chengliang Chai (Proc. VLDB Endow., 2019)