Hadoop enable logging

Question

I am trying to work with hadoop built from source in a single cluster mode.I checked out 0.22.0-alpha-1.I am facing few problems with logging. How do i enable debug logs.

Answer 1

I'd suggest trying

log4j.logger.org.apache.hadoop = DEBUG

for debug logging inside of every Hadoop class.

If this doesn't work, then you haven't configured log4j properly.