[infinispan-dev] Classloader leaks?

[Sanne Grinovero]

Hi all,

our documentation suggest to raise the file limits to about 16K:
http://infinispan.org/docs/stable/contributing/contributing.html#running_and_writing_tests

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