I have a demo copy of Firewall Analyzer 6.0.   After about 10 hours it stopped collecting statistics from the firewall (1 Checkpoint FW with LEA connection). 

[/bin]# ./firewallanalyzer console
Running ManageEngine Firewall Analyzer 6.0...
File size limit exceeded

The wrapper.log file had grown to 2GB.   What is the best practice for managing these log files?