When I debug framework, I found there are lots of useful information which is not logged to standard output due to isFineLEvelLoggable != true.
Check our pom.xml, we are using logback-classic 1.1.7 as logging framework.
according to this link: http://logback.qos.ch/manual/configuration.html, it is very easy to enable debug log level by chaning logback.xml:
paste the following content into logback.xml:
And in the runtime, you can see lots of useful debug information now:
