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The "Combiner" page has been changed by edwardyoon: http://wiki.apache.org/hama/Combiner?action=diff&rev1=3&rev2=4 <<TableOfContents(2)>> - == Combiner == + == Combiners == Combiners are used for performing message aggregation to reduce communication overhead in cases when messages can be summarized arithmetically e.g., min, max, sum, and average at the sender side. Suppose that you want to send the integer messages to a specific processor from 0 to 1000 and sum all received the integer messages from all processors.
