/// <exception cref="System.IO.IOException"/>
/// <exception cref="System.Exception"/>
protected override void Reduce(Text key, IEnumerable <IntWritable> values, Reducer.Context
context)
{
context.GetCounter("MyCounterGroup", "REDUCE_INPUT_GROUPS").Increment(1);
int sum = 0;
foreach (IntWritable val in values)
{
sum += val.Get();
}
result.Set(sum);
context.Write(key, result);
context.GetCounter("MyCounterGroup", "REDUCE_OUTPUT_RECORDS").Increment(1);
}