I'm a recent user of Presto and Hive at Facebook after being here coming up to three years. I've been using them primarily to understand ways in which we might

I'm a recent user of Presto and Hive at Facebook after being here coming up to three years. I've been using them primarily to understand ways in which we might be sending people's traffic to non-optimal locations, or non-optimal paths between our CDN and the source content, or to help with understanding current and extrapolating future capacity needs on our CDN (total requests, changes in cache hit object/byte rates, &c.)