csv

I’ve been working with Big data since 2017. As I’m from data warehousing background, it was easier for me to understand what’s what, and build an analogy between DWH & big data frameworks. However, the various file formats used in HDFS always caught me off guard. In DWH, I never considered how the files are stored in DB, it’s managed by the database, maybe DBA might know how its done at the backend, as a DB developer it never bothered me.