Someone's getting fired tonight.
Losing data is really really bad, and if it happens it better be minor and there better be extreme circumstances. If a service goes down, that is bad but shit happens sometimes. Something minor like this is going to make for an entertaining post-mortem, but nothing more. I'm sure Google will do something nice for the person who was affected by it.
Easy rule of thumb for operations: Never make the same mistake twice. You learn from every mistake, but new and amazing ways for things to break are always going to happen.
Source: I worked at Google in operations and made mistakes that were far worse than this