Disks have become tapes
Tom White - "Disks have become tapes":
"In essence MapReduce works by repeatedly sorting and merging data that is streamed to and from disk at the transfer rate of the disk. Contrast this to accessing data from a relational database that operates at the seek rate of the disk."
(Via Nat Torkington at O'Reilly Radar.)
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Thu, 20 Mar 2008 12:39:08 +0100
