Posts explaining the `EXPLAIN` command

The fundamentals: MPP and data distribution

8 minute read

One can say that Presto is a MPP (Massively Parallel Processing) kind of application. Well, I have never seen a data warehouse which did not follow this approach. Teradata, Netezza, Vertica and even Hive and many many more, all of these belong to this class of software. It is not only typical for data warehouses, but also for any distributed application which is processing vast amount of data, doing non-trivial and very costly computation on it.