Standard practices for logging in MapReduce jobs

Question

I\'m trying to find the best approach for logging in MapReduce jobs. I\'m using slf4j with log4j appender as in my other Java applications, but since MapReduce job runs in a

Answer 1

To add to @Ashrith 's answer: you can view the individual task tracker logs via the JobTracker GUI. The running task attempts are visible by the JT Gui and you can click on any of the following: stderr, stdout, and system logs. The system logs are where you find your log4j outputs.