Upgrading To The New Map Reduce API
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The document summarizes the key changes between the old MapReduce API and the new MapReduce API in Hadoop. Some of the main changes include: - Renaming all "mapred" packages to "mapreduce" - Methods can now throw InterruptedException in addition to IOException - Using Configuration instead of JobConf - Changes to Mapper, Reducer, and RecordReader interfaces and classes - Submitting jobs uses the Job class instead of JobConf and JobClient classes - InputFormats and OutputFormats see changes like new methods and removed classes
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Upgrading To The New Map Reduce API
- 1. September 23 rd , 2009 Yahoo! welcomes you to the Hadoop Bay Area User Group
- 3. September 23 rd , 2009 Upgrading to the New MapReduce API
- 20. September 23 rd , 2009 Mining the web with Hadoop, Cascading & Bixo
- 21. Thank you. See you at the next Bay Area User Group Oct 21 st , 2009