Big Data Normalization for Massively Parallel Processing Databases

摘要

High performance querying and ad-hoc querying are commonly viewed as mutually exclusive goals in massively parallel processing databases. In the one extreme, a database can be set up to provide the results of a single known query so that the use of available of resources are maximized and response time minimized, but at the cost of all other queries being suboptimally executed. In the other extreme, when no query is known in advance, the database must provide the information without such optimization, normally resulting in inefficient execution of all queries. This paper introduces a novel technique, highly normalized Big Data using Anchor modeling, that provides a very efficient way to store information and utilize resources, thereby providing ad-hoc querying with high performance for the first time in massively parallel processing databases. A case study of how this approach is used for a Data Warehouse at Avito over two years time, with estimates for and results of real data experiments carried out in HP Vertica, an MPP RDBMS, are also presented.