I've a similar background, and have worked recently w/ a handful of teams with atrocious, self-imposed developer experience. I think that applying concepts like SLOs and error budgets to relevant developer-centric activities can really help focus the team and other stakeholders well before the experience passes some threshold of terrible.
For the winter Olympics, I had a VPS provisioned with a Toronto-based provider: setup Apache w/ a password protected mod_proxy. Voila, I could watch live curling and luge in the office. Total cost was less than $30 USD.
Nothing to say about Hadoop/Java homogeneity, but a Zookeeper alternative I've been looking at for the same reasons is Dozerd from Heroku (https://github.com/ha).
From the linked document, it looks like the bulk of the alleged content is for various adult titles. Who wants to go to go to court for allegedly sharing "Don’t Tell My Wife I A$$ed The Babysitter" (1257 users)?
Given the choice of an publicly embarrassing allegation vs. paying "damages", it is no surprise that so many are settling rather than going to court.
I've been using this last spring, initially as an offline reference when flying, etc. Since then, it's become my primary reference when working with jQuery. It's perfect for what I need: instantly looking up usage details for specific methods.