I ran into a bit of a puzzling situation yesterday, testing some of the new index construction changes before they’re going live in a few days. The process crashed with a pretty non-descript stack trace complaining about illegal instructions, so first glance it looked more like it was within the realm of freak JVM bug, cosmic ray, hardware error maybe. I was doing this on my developer workstation, which also spawned a popup complaining that the hard drive it was working on had nearly run ou...