Tasks should terminate in case of JobScheduler Agent crash

Current Situation

• A shell job is running on a JobScheduler Agent.
• The JobScheduler Agent is crashed, for instances with a segmentation fault
• The task continues and will be completed though the JobScheduler Agent is not available anymore.
• This behaviour does not apply to jobs that make frequent use of the JobScheduler API.

Desired Behavior

• All tasks are killed immediately in case that the JobScheduler Agent crashes.
• This feature is intended to cope with a situation when a
  • SIGKILL signal is sent to the Agent (for instance via kill -9).
  • SIGSEGV signal is sent to the Agent (for instance via kill -11)

Implementation

• The Agent keeps track of running tasks in a file (JS-1551)
• The Agent start script detects that the respective Agent is terminated and will terminate any running tasks based on the file with the list of running tasks (JS-1552).