# Jeffrey Dean and Sanjay Ghemawat, MapReduce: Simplified Data Processing on Large Clusters, OSDI 2004.
== MapReduce==
Map/Reduce编程模型 (Abstraction)和实现框架。
用户只要编写 map()和 reduce()函数。
Map/Reduce 框架能够自动将程序分配到集群上运行，并汇总运行结果
=== HDFS (Hadoop Distributed File System) ===