Jul
12

Yahoo! Updates from Hadoop Summit 2010

Posted on July 12, 2010 by Ron Bodkin

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 they apply the technology. The increasing interest in Hadoop was evident: this year’s conference had…

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Jul
9

GigaOm Structure Highlights

Posted on July 9, 2010 by Ron Bodkin

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 changes in how data gets handled that will be coming. Paul Maritz, CEO of VMWare,…

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Feb
12

SQL Window Functions in Hive

Posted on February 12, 2010 by Ron Bodkin

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 order by score) from product_scores

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