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From Jitendra Nath Pandey <jiten...@yahoo-inc.com>
Subject Re: Datanode debug logging mode
Date Fri, 02 Apr 2010 02:19:30 GMT
Logging level can be set in $HADOOP_CONF_DIR/log4j.properties file.

Following has worked for me

For the running daemons you can use command line to set and get log levels
without restart
  bin/hadoop daemonlog -getlevel <host:port> <name>
  bin/hadoop daemonlog ­setLevel <host:port> <name>  <level>

On 4/1/10 6:24 PM, "Thanh Do" <thanhdo@cs.wisc.edu> wrote:

> Hi,
> Can anybody tell me how to turn on DEBUG logging mode?
> By default, the logging level is INFO, but I can't figure out what parameter
> to tweak in the config file to get it done.
> Thank so much?

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