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The "Aggregators" page has been changed by AnastasisAndronidis: https://wiki.apache.org/hama/Aggregators?action=diff&rev1=6&rev2=7 this.aggregate(index,value); }}} + The index parameter of this method is a number that is equivalent to the order of the registered aggregator. (The first registered aggregator is number 0, second is number 1 etc.) === Get results === Inside your vertex, you can get the results of each aggregator by using this method: {{{ - this.getAggregatedValue(0); + this.getAggregatedValue(index); }}} - - The parameter of this method is a number that is equivalent to the order of the registered aggregator. (The first registered aggregator is number 0, second is number 1 etc.) === Write your own aggregators === To write your own aggregator, you have o extend AbstractAggregator class and implement the methods of #aggregate(M value) and #getValue(). For more, please see the default implemented aggregators in org.apache.hama.graph package.
