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brain of mat kelcey


first hadoop experiment

September 16, 2009 at 07:26 PM | categories: ec2, big data, hadoop | View Comments

just finished my first hadoop experiment.matpalm.com/sipnot fantastic results but heaps of of feedback from hadoop mailing groupmore results coming soon...
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the median of a trillion numbers

November 15, 2008 at 11:31 AM | categories: erlang, algorithms, ec2 | View Comments

i got asked in an interview once “how would find the median of a trillion numbers across a thousand machines?”the question has haunted me, until now.here’s my ruby and erlang implementation with a bit of running amazon ec2 thrown in for good measure….. matpalm.com/median/grab the code from github...
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