If you are reading this comment before the article: they use Yandex's OLAP solution, ClickHouse, and Kafka.<p>The whole article explains how and why they got there, it is actually very well written!
The XFS "lock up" issue is concerning -- it's been a very long time since I've seen any showstopping issues with that filesystem. Is anyone aware of what's going on there?
Currently using Kafka + ClickHouse for something very similar.<p>The Grafana integration comes in handy! I've been stalking <a href="https://github.com/vavrusa" rel="nofollow">https://github.com/vavrusa</a> on GitHub for a while ;-)<p>Thanks for the writeup!