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Yes, MapReduce is very scalable -- that is well understood. There is more to building a system than pure scalability, though: for example, energy efficiency. If
by neilc 17y ago
Yes, MapReduce is very scalable -- that is well understood. There is more to building a system than pure scalability, though: for example, energy efficiency. If Hadoop was less inefficient, it would be significantly more green. As energy grows to become a greater portion of the total operating cost of a typical datacenter, this will become increasingly important.
- deleted 17y ago[deleted]
- artsrc 17y agoOur SQL database experience is two servers (Active plus BCP) which are close to 0% utilized 99% of the time. Then once a month another application on one of the server runs a batch and our users response time increases significantly. And we don't use MySQL. The reality of SQL implementations with the leading vendors is infrastructure overhead. Even scaling with many server inside one application is not really recommended: http://wedonotuse.blogspot.com/2006/11/brief-intro-to-marketing-or-you-need.html http://wedonotuse.blogspot.com/2006/11/brief-intro-to-market... Going to a truly shared infrastructure takes you out of the comfort zone so far you might as well dump SQL databases, since people only pick them because of familiarity.