| 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 |
Log level with log4j and Spark
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