https://github.com/JerryLead/SparkInternals/tree/master/EnglishVersion
https://github.com/JerryLead/SparkInternals/tree/master/EnglishVersion
https://ihainan.gitbooks.io/spark-source-code/content/section1/partitioner.html
https://github.com/ColZer/DigAndBuried/tree/master/spark
https://github.com/ihainan/SparkInternals/tree/master/section1
原文：http://www.cnblogs.com/WCFGROUP/p/6681696.html