(* originally posted in LinkedIn in 2018 )

Columnar file formats have become the primary storage choice for big data systems, but when I Googled related topics this weekend, I just found that most articles were talking about the simple query benchmark and storage footprint comparisons between a particular columnar…

This week (2020–11–10) was really big for System on a Chip: first Apple M1, and then followed by MediaTek MT8195/MT8192. But why on earth these have anything to do with lego, microservices and even data model? It is a topic I have put off for a few years.

Probably, all…

“Data Lake” has become a buzz word since 2016, and we even invented the phrase “Lakehouse” lately. Did we simply upload the web logs and dump tables from MPP database into HDFS or cloud storage, so we call that Data Lake? …