Specify log4j properties file

[Ashic Mahtab]

Hello,Is it possible to provide a log4j properties file when submitting jobs to 
a cluster? I know that by default spark looks for a log4j.properties file in 
the conf directory. I'm looking for a way to specify a different 
log4j.properties file (external to the application) without pointing to a 
completely different conf directory. Is there a way to achieve this?
Thanks,Ashic.