public override void Reduce(string key, IEnumerable <string> values, ReducerCombinerContext context)
{
context.IncrementCounter(context.IsCombiner ? "combineInputs" : "reduceInputs");
string sum = values.Sum(s => long.Parse(s)).ToString();
context.Log(string.Format("Combine/Reduce:: {0},{1}", key, sum));
context.EmitKeyValue(key, sum);
}
