OutOfMemory error with ./login and ./jobscheduler/cluster/members

Current Situation

The api calls of

• ./login opens an unnecessary thread which will not be closed.
• ./jobscheduler/cluster/members opens threads which will not be closed.

The memory grows with each call until

javax.servlet.ServletException: org.glassfish.jersey.server.ContainerException: 
java.lang.OutOfMemoryError: unable to create new native thread

Desired Behaviour

• ./login don't open unnecessary thread
• ./jobscheduler/cluster/members should close threads.

Workaround

• A patch is available on top of release 1.11.4.
• How to apply the patch:
  • Download the patch
  • Stop JOC Cockpit: ./joc/jetty/bin/jetty.sh stop
  • Remove (or archive) an existing file ./joc/jetty_base/webapps/joc.war
  • Extract the patch .zip archive and copy the file joc.war to ./joc/jetty_base/webapps/joc.war
  • Start JOC Cockpit: ./joc/jetty/bin/jetty.sh start