We are getting below error in node log. Because of this job is getting stuck.

We have tried this setting -Dhudson.util.ProcessTree.disable=true and BUILD_ID=DoNotKillMe etc. But this did not help. We are using Jenkins 2.19.4. After upgrade also we are still getting the same issue. Can anyone please update any solution for this issue. 

WARNING: Process leaked file descriptors. See http://wiki.jenkins-ci.org/display/JENKINS/Spawning+processes+from+build for more information
java.lang.Exception
at hudson.Proc$LocalProc.join(Proc.java:329)
at hudson.Launcher$RemoteLaunchCallable$1.join(Launcher.java:1154)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)