pgrm/giraph — pull request #1 by pushparajxa (2013-12-14 00:04:30+00:00)
Title: Aggregator Support Addition

When you are running giraph job , you need to specify the MasterComputtaion class and Aggrgatorwriter class

giraph.masterComputeClass	class	DefaultMasterCompute	Class for Master - optional
giraph.aggregatorWriterClass	class	TextAggregatorWriter	AggregatorWriter class - optional

We can use the SimpleAggregatorWriter.java to write the aggrgator values to the file.