keepalive together with SPARQLStore gives to many files open

[dwintergruen]

If I have keep alive installed trying to use SPARQLStore update
always fails with to "many files open".

[bgw]

HTTP keepalive requires holding file descriptors open, so an increase in file descriptors is to be expected. This isn't a bug in this module, unless we're leaking file descriptors somewhere.

If you're running into a system-wide limit, you can increase that with sysctl.

If you're using systemd to launch your service, it also specifies a per-service limit, you can use LimitNOFILE to change that limit.

If you're using a non-systemd Linux distribution, you may need to edit /etc/security/limits.conf.

If you're on OS X, you can try following this guide.