`

hadoop mapreduce查看System.out的数据

 
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Actually stdout only shows the System.out.println() of the non map reduce classes. The System.out.println() for map and reduce phases can be seen in the logs. Easy way to access the logs is http://localhost:50030/jobtracker.jsp- >click on the completed job->click on map or reduce task->click on tasknumber->task logs->stdout logs.

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