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On “Billions wasted on Hadoop startups, the same will eventually be true of Docker”
This is precisely why I said the fact that someone would gloss over this is a red flag. The point is super critical . VMs are literally so hard to do correctly and in a performant fashion that parts of CPU instruction sets0, and kernel subsystems (KVM1) were created to make them easier to run. Containers, in contrast are literally a few flags and a bunch of in-kernel antics. A few people, notably Liz Rice and Jessie Frazelle have given talks on how to make containers from scratch that are very illuminating for those that are interested: link link to this video 0: link 1: link