Their report (linked to from the post) goes into greater detail: http://developer.yahoo.com/blogs/hadoop/Yahoo2009.pdf http://developer.yahoo.com/blogs/hadoop/Y

Their report (linked to from the post) goes into greater detail: http://developer.yahoo.com/blogs/hadoop/Yahoo2009.pdf http://developer.yahoo.com/blogs/hadoop/Yahoo2009.pdf I'd love to know why the 500 GB and 100 TB sorts ran at about half the speed of the other two (~0.5 TB/min as opposed to ~1 TB/min).