I'd be interested in patching jena to use the thread-safe FastDateFormat of commons-lang3 3.3.2 (or 2.6). The current use of the non-threadsafe SimpleDateFormat class is a bit of a performance slob, and FastDateFormat is designed as direct replacment.
This would add commons-lang3 as a dependency some new places. Is is worth spending my time on this ? Kristian
