code: public void initializeRunningTask(QueuableTask task, String hostname) {
          addRunningTasksQueue.offer(Collections.singletonMap(hostname, task));
      }
docs: Mark the given tasks as running. This is expected to be called for all tasks that were already running from before
  {@link com.netflix.fenzo.TaskSchedulingService} started running. For example, when the scheduling service
  is being started after a restart of the system and there were some tasks launched in the previous run of
  the system. Any tasks assigned resources during scheduling invoked by this service will be automatically marked
  as running.
  <P>
  @param task The task to mark as running
  @param hostname The name of the VM that the task is running on.