Memory leak with MySQL Database

Everyone already knows about this issue, but I wanted to make sure it's in the issue tracker. I'm getting OOM kills using 6gb max memory for java (7gb for the box, any more and it crashes my system). I'm not sure if it's a matter of closing database objects after we're done using them, but it's a serious barrier at the moment and it needs to be fixed.

MySQL is showing the lions share spent in VisualVM, is there anything I can do to hunt this memory leak down myself?