Log level with log4j and Spark

Log Level	Usages
OFF	This is the most specific, which allows no logging at all
FATAL	This is the most specific one that shows fatal errors with little data
ERROR	This shows only the general errors
WARN	This shows warnings that are recommended to be fixed but not mandatory
INFO	This shows information required for your Spark job
DEBUG	While debugging, those logs will be printed
TRACE	This provides the least specific error trace with a lot of data
ALL	Least specific message with all data