[adgar]

> The effect is that the search is too broad. The problem is more likely to be that the range search is a mapreduce that performs a search for each item in the range.

I'm a bit confused to see this so highly upvoted. I'm not sure you understand what MapReduce is for. MapReduce is not a technology designed for executing a search query in under 100ms, it's for massive data processing jobs. MapReduce is what you would use to do to prepare an index, not to query it.

> You can imagine why that's a bad idea, and some aggressive timeouts are probably what stop it from going too far.

As you yourself noted, this is blocked to prevent people from searching for SSN/credit card/etc. dumps.