Amazon S3 與 HDFS 的速度差異

作者繼續以 A Billion Taxi Rides 的資料測試各種差異,這次測了 Amazon S3HDFS 的速度差異:「A Billion Taxi Rides: AWS S3 versus HDFS」。

前半部都在說明測試的環境設定,重點在文章的最後面 (也就是「Benchmarking HDFS」這段),裡面有各種 query 的速度。HDFS 的速度大約是 Amazon S3 的 1.25 到 1.75 倍,作者給的結論是:

Though the speed improvements using HDFS are considerable, S3 did perform pretty well. At worst there's a 1.75x overhead in exchange for virtually unlimited scalability, 11 9's of durability and no worrying about over/under-provisioning storage space.

雖然 HDFS 比較快,但 Amazon S3 其實表現的不錯,另外資料安全性 (平均 99.999999999%,也就是 11 個 9 的 durability) 及不需要怕空間不夠的優點也是應該考慮進去的因素。

This entry was posted in AWS, Cloud, Computer, Murmuring, Network, Software and tagged , , , , , , , , , , , , , . Bookmark the permalink.

Leave a Reply

Your email address will not be published. Required fields are marked *