In this tuning guide, we attempt to provide the audience with a holistic approach of Hadoop performance tuning methodologies and best practices.
Adding and subtracting software from a running cluster can be tricky; however, many application packages can be added or removed easily with a few tools and some simple tricks.
Load averaging can be a source of confusion for admins. We provide a look at some basic considerations.
http://www.admin-magazine.com/Articles/Law-of-Averages-Load-Averaging
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