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The "Aggregators" page has been changed by AnastasisAndronidis: https://wiki.apache.org/hama/Aggregators?action=diff&rev1=8&rev2=9 There are multiple different aggregators and you can also make your own. You can look for already implemented aggregators in org.apache.hama.graph package. === Start working with aggregators === - In order to aggregate values, from your vertex, use: + In order to aggregate values from your vertices, use: {{{ this.aggregate(index,value); }}} + + This method is called from inside each vertex. Though it's not mandatory all vertices to make use of this method. The index parameter of this method is a number that is equivalent to the order of the registered aggregator. (The first registered aggregator has index 0, second has index 1 etc.)
