[infinispan-dev] Classloader leaks?

Hi all, our documentation suggest to raise the file limits to about 16K: http://infinispan.org/docs/stable/contributing/contributing.html#running_... I already have this setup since years, yet I've been noticing errors such as: "Caused by: java.io.IOException: Too many open files" Today I decided to finally have a look, and I see that while running the testsuite, my system's consumption of file descriptor raises continuously, up to more than 2 millions. (When not running the suite, I'm consuming 200K - that's including IDEs and other FD hungry systems like Chrome) Trying to get some samples of these file descriptors, it looks like it's really about open files. Jar files to be more precise. What puzzles me is that taking just one jar - jgroups for example - I can count 7852 open instances of it, but distributed among a handful of processes only. My guess is classloaders aren't being closed? Also: why did nobody else notice problems? Do you all have reconfigured your system for unlimited FDs? Thanks, Sanne