Please read on if you work on current GlassFish trunk workspace.
We recently discovered JDK 6 compiler issue which is blocking pending REST checkin. In order to resolve the issue, we must enforce the use of JDK 6u34 (i.e. 1.6.0_34) as minimal JDK version used to compile GlassFish workspace. So, if you currently use JDK 6 for GlassFish trunk compilation please upgrade your JDK installation to JDK 6u34 otherwise your build will fail once I check in maven-enforcer-plugin configuration change. If you already use JDK 7, you don't need to do anything to your build environment.
I will check in maven-enforcer-plugin configuration change today at 7:30 PM CET/10:30 AM PST.
Thanks,
Snjezana