Referring to our example, the aggregation information needs to contain the weighted sum of all values passed in so far (for that group) and the count for the number of values already processed.
按照例子的要求，聚集信息需要保存目前为止所有（该组）传入值的加权和，并保存已经处理过的数值的数量。
Referring to our example, the aggregation information needs to contain the weighted sum of all values passed in so far (for that group) and the count for the number of values already processed.
按照例子的要求，聚集信息需要保存目前为止所有（该组）传入值的加权和，并保存已经处理过的数值的数量。
应用推荐