What is the use of wapper.log file in Optimize logs?


We could see wrapper.log file in optimize(Prediction,Datacollecter&Analyasis) log files.
In dev server the file is not updating daily but when in Prod server it sis updating daily. Itmeans some reguler activity is updating this log.

Kindly let me know when this log is upadting and what information it contains.
Incase if we delete this file is there any impact on wm system.