Well,couldn't make it work... I tried out several options : I successfully got drivers logs in dedicated log file when using following option with my "spark-submit" command line : --driver-java-options "-Dlog4j.configuration=file:///local/home/.../log4j.properties" Couldn't obtain the same with your suggestion : --conf "spark.driver.extraJavaOptions=... For executors' logs, I gave a try with your suggestion as well : --conf "spark.executor.extraJavaOptions=... but failed to notice any change to logging mechanism. I guess this is a classpath issue, but couldn't find any relevant example in the documentation 😞 If I use --conf "spark.executor.extraJavaOptions=-Dlog4j.configuration=log4j.properties", where should I put this log4j.properties file ? in the "root" folder of the fat jar that I pass to spark-submit command ? somewhere else ? Note that I also tried with : --conf "spark.executor.extraJavaOptions=-Dlog4j.configuration=file:///local/home/.../log4j.properties" to point to an external file (not in the jar file) but it failed too... Any idea about something wrong in my configuration ? Thanks for your help ... View more