Jenkins error: java.io.FileNotFoundException: ... (Too many open files)

[Nir Soffer]

Jenkins needs restart?

Building remotely on ovirt-srv21.phx.ovirt.org
<http://jenkins.ovirt.org/computer/ovirt-srv21.phx.ovirt.org> (fc24
phx integ-tests physical) in workspace
/home/jenkins/workspace/ovirt-system-tests_manual
java.io.FileNotFoundException:
/var/lib/data/jenkins/jobs/ovirt-system-tests_manual/builds/856/changelog.xml
(Too many open files)
	at java.io.FileOutputStream.open0(Native Method)
	at java.io.FileOutputStream.open(FileOutputStream.java:270)
	at java.io.FileOutputStream.<init>(FileOutputStream.java:213)
	at java.io.FileOutputStream.<init>(FileOutputStream.java:162)
	at org.jenkinsci.plugins.multiplescms.MultiSCM.checkout(MultiSCM.java:119)
	at hudson.scm.SCM.checkout(SCM.java:495)
	at hudson.model.AbstractProject.checkout(AbstractProject.java:1276)
	at hudson.model.AbstractBuild$AbstractBuildExecution.defaultCheckout(AbstractBuild.java:560)
	at jenkins.scm.SCMCheckoutStrategy.checkout(SCMCheckoutStrategy.java:86)
	at hudson.model.AbstractBuild$AbstractBuildExecution.run(AbstractBuild.java:485)
	at hudson.model.Run.execute(Run.java:1735)
	at hudson.model.FreeStyleBuild.run(FreeStyleBuild.java:43)
	at hudson.model.ResourceController.execute(ResourceController.java:97)
	at hudson.model.Executor.run(Executor.java:405)
ERROR: Step ?Post build task? aborted due to exception:
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