How do I view standard out in hadoop?

I'm new to hadoop and trying to get my first non-trivial program working, and want to view standard out for debugging purposes. It's my understanding that standard out is directed into log files somewhere, so my 开发者_C百科question is twofold. 1) where is the log file storing this output 2) how do I view the file?

FYI, I'm just running the code on tiny inputs in the virtual machine right now.

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Go to your jobtracker web interface, there are links to view jobs, click on them, then go to map or reduce attempts, and for each task attempt there's a link to view logs for this task.

http://jobtracker:50060/tasklog?attemptid=attempt_201101171546_0109_m_000000_0&all=true