I was faced with a strange problem in my eclipse. When I start my glassfish out from eclipse in debug mode the debugger did no work properly. When I set a breakpoint the eclipse ide stops but was unable to open the corresponding java source file. So the code line of a breakpoint was not shown in the editor. So it was impossible to use the debugger.
The reason was because of a bug in an early jdk 1.6 version. I was running the glassfish with OpenJDK 6. And after I changed the glassfish server launch settings in my eclipse IDE from OpenJDK to sun-jdk 1.6.0_22-b04 the debugger works fine again.
here are the details about that issue: