Facebook officially announces open source presto--data query engine, which enables fast interactive analysis of more than 250PB of data. The project began to be developed in the autumn of 2012 and is currently being used by more than 1000 http://www.aliyun.com/zixun/aggregation/1560.html ">facebook employees, running over 30000 Queries, daily data at 1PB level. Facebook says Presto's performance is 10 times times better than Hive and Map*reduce.
Presto currently supports most of the special effects of ANSI SQL, including federated queries, left and right joins, subqueries, and some aggregation and calculation functions; support approximate distinct counts (DISTINCT count), and so on.
You can find out the details of the project and get the code at the following address:
Documentation | Code
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