Simultaneous node shutdown bombs bootstrap server

[quchen]

When multiple nodes go down simultaneously, the bootstrap server does not clean them up fast enough. After a short while, all its nodes shut down because of missing responses. A tell-tale sign that this is imminent is that CPU usage goes way up, but I don't know which function is responsible for this.

[quchen]

Looks like this issue will eventually fix itself over time, rewrites and refactorings. I can't recall having had it in the last couple of days.