Upgrading Uber's MySQL Fleet

I get the urge to standardize infrastructure but... wow. After reading the whole thing, I get why they thought it was worth doing, but you'd think they'd just hire a Postgres guy or two. Especially when they looked at the missing features, this feels like a downgrade...

In big companies they never just "hire a guy or two"; the bus factor would be atrocious in this case, not to mention vacations and such. The minimum unit of hiring is one team, about five people five or take. So the difference they are looking at is either hiring a team of Postgres people or forcing everyone on one existing team to learn Postgres deeply. From this perspective, standardizing on infrastructure makes more sense now.