Using mmap in Java is not really that interesting-- you just use FileChannel#map, which has been around for a long time. There is no need even for JNI. The on

Using mmap in Java is not really that interesting-- you just use FileChannel#map, which has been around for a long time. There is no need even for JNI. The only remotely "interesting" part is that Java doesn't provide munmap, so you have to work around that. This whole thread makes me very sad. I might have to write a "Mythbusters" post about Hadoop at some point.