I found a several issue to use the birt component on production
The class BirtContainer call the birt engine with hard coding level ALL oO .
The result : to generate a reporting of 100Mo we had a log file of 10Go.
The problem come from birt use java.util.Logger to generate log, I can't found how use the org.apache.log4j.Logger instead of, so I create a quick patch to create a level matching between Log4j and java Logger
I found some example to implement it like http://stackoverflow.com/questions/24318087/direct-birt-report-logs-to-log4j but I failed to do it on OFBiz. So if you can check my quick correction or resolve how use directly log4j it's mostly appreciate