Google, along with Bing and Yahoo! have been attracting a lot of discussion for venturing into web semantics without asking permission.
However that turns out, please don’t miss:
Dremel: interactive analysis of web-scale datasets
Abstract:
Dremel is a scalable, interactive ad hoc query system for analysis of read-only nested data. By combining multilevel execution trees and columnar data layout, it is capable of running aggregation queries over trillion-row tables in seconds. The system scales to thousands of CPUs and petabytes of data, and has thousands of users at Google. In this paper, we describe the architecture and implementation of Dremel, and explain how it complements MapReduce-based computing. We present a novel columnar storage representation for nested records and discuss experiments on few-thousand node instances of the system.
I am still working through the article but “…aggregation queries over trillion-row tables in seconds,” is obviously of interest for a certain class of topic map.
[…] Dremel, see: Dremel: Interactive Analysis of Web-Scale Datasets, as […]
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