2018年9月25日
Map Reduce Application(Partitioninig/Binning)
摘要： Map Reduce Application(Partitioninig/Group data by a defined key) Assuming we want to group data by the year(2008 to 2016) of their [last access date 阅读全文
posted @ 2018-09-25 16:25 Ricky~~ 阅读(308) 评论(0) 推荐(0)
Map Reduce Application(Top 10 IDs base on their value)
摘要： Top 10 IDs base on their value First , we need to set the reduce to 1. For each map task, it is not a good idea to output each key/value pair. Instead 阅读全文
posted @ 2018-09-25 13:59 Ricky~~ 阅读(192) 评论(0) 推荐(0)