| Value | Meaning |
|---|---|
| OFF | No events are recorded. |
| FATAL | |
| ERROR | Error events that may still allow the application to continue running. |
| WARN | Events that indicate a potentially harmful situation. |
| INFO | Informational messages that highlight the progress of the application at a coarse level. |
| DEBUG | Fine grain informational events useful for debugging. |
| TRACE | Finer grain information than DEBUG. |
The log level is used to control which log statements should result in output. Log levels are presumed to be inclusive, that is, ERROR implies FATAL and WARN implies ERROR, FATAL, etc.