[ecolak]

Impala, imitating Google's Dremel, is specifically designed for OLAP scenarios with its columnar storage structure and the compression algorithms that go along with it. This is not a fair comparison. Try doing OLTP with Impala and you'll see what I mean.

[dagilmore]

Great point! I mentioned it in the post, did you read it?

"Note that the properties of a relational database are well suited to online-transaction processing (OLTP). Such a system guarantees consistency and availability, and it supports extreme multi-tenancy. However, complex logic over large amounts of data does not perform well"