文件名称：hadoop mapreduce
文件大小：171KB
文件格式：PDF
更新时间：2016-06-25 15:57:00
hadoop
Table of contents 1 Purpose...............................................................................................................................2 2 Prerequisites.......................................................................................................................2 3 Overview............................................................................................................................2 4 Inputs and Outputs............................................................................................................. 3 5 Example: WordCount v1.0................................................................................................ 3 5.1 Source Code...................................................................................................................3 5.2 Usage............................................................................................................................. 6 5.3 Walk-through.................................................................................................................8 6 MapReduce - User Interfaces.............................................................................................9 6.1 Payload.......................................................................................................................... 9 6.2 Job Configuration........................................................................................................ 13 6.3 Task Execution & Environment.................................................................................. 14 6.4 Job Submission and Monitoring..................................................................................22 6.5 Job Input...................................................................................................................... 25 6.6 Job Output................................................................................................................... 27 6.7 Other Useful Features..................................................................................................28 7 Example: WordCount v2.0.............................................................................................. 35 7.1 Source Code.................................................................................................................35 7.2 Sample Runs................................................................................................................41 7.3 Highlights.................................................................................................................... 43 Copyright ©