@Override
protected void reduce_(K key, SuspendableIterator<Long> counters, Context context)
throws Exception {
long counterSum = 0;
while (counters.hasNext()) {
counterSum += counters.next();
}
emit(key, counterSum);
}
public T next() throws SuspendExecution {
if (!hasNext()) {
throw new NoSuchElementException();
}
counter++;
return wrapped.next();
}
public boolean hasNext() throws SuspendExecution {
return counter < loopLimit && wrapped.hasNext();
}