Yahoo! Updates from Hadoop Summit 2010

The Hadoop Summit of 2010 started off with a vuvuzela blast from Blake Irving, Chief Product Officer for Yahoo. Yahoo delivered keynote addresses that outlined the scale of their use, technical directions for their contributions, and architectural patterns in how…

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GigaOm Structure Highlights

The GigaOM Stucture conference a couple of weeks ago addressed many areas of cloud computing. One of the key themes of the event was the emergence of new data architectures. Throughout the panels, interviews, and presentations many speakers identified significant…

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SQL Window Functions in Hive

One of the powerful capabilities of SQL 2003 is the ability to use window functions, e.g., this query computes the ratio of a score to the average score of lower scores, for each product select score/(sum(score)/row_number()), product over (partition by product…

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