fix for STOPPED tasks via stop_task()

they previously killed the main process

gluon/scheduler.py

@@ -391,7 +391,6 @@ class MetaScheduler(threading.Thread):
         except:
             p.terminate()
             p.join()
-            self.have_heartbeat = False
             logger.debug('    task stopped by general exception')
             tr = TaskReport(STOPPED)
         else:
@@ -406,7 +405,6 @@ class MetaScheduler(threading.Thread):
                 except Queue.Empty:
                     tr = TaskReport(TIMEOUT)
             elif queue.empty():
-                self.have_heartbeat = False
                 logger.debug('    task stopped')
                 tr = TaskReport(STOPPED)
             else:
@@ -922,7 +920,7 @@ class Scheduler(MetaScheduler):
         else:
             st_mapping = {'FAILED': 'FAILED',
                           'TIMEOUT': 'TIMEOUT',
-                          'STOPPED': 'QUEUED'}[task_report.status]
+                          'STOPPED': 'FAILED'}[task_report.status]
             status = (task.retry_failed
                       and task.times_failed < task.retry_failed
                       and QUEUED or task.retry_failed == -1