De-queue tasks on forced state change.

Author: hjoliver

cylc/flow/scripts/dump.py

@@ -27,7 +27,7 @@
 
 For command line monitoring:
 * `cylc tui`
-* `watch cylc dump WORKFLOW_ID` works for small simple workflows
+* `watch cylc dump -t WORKFLOW_ID` works for small simple workflows
 
 Examples:
   # Display the state of all active tasks, sorted by cycle point:

cylc/flow/task_pool.py

@@ -1819,19 +1819,24 @@ def _set_outputs_itask(
             outputs = self._standardise_outputs(
                 itask.point, itask.tdef, outputs)
 
-        changed = False
         outputs = sorted(outputs, key=itask.state.outputs.output_sort_key)
         for output in outputs:
             if itask.state.outputs.is_completed(output):
                 LOG.info(f"output {itask.identity}:{output} completed already")
                 continue
             self.task_events_mgr.process_message(
                 itask, logging.INFO, output, forced=True)
-            changed = True
 
-        if changed and itask.transient:
-            self.workflow_db_mgr.put_update_task_state(itask)
-            self.workflow_db_mgr.put_update_task_outputs(itask)
+        if not itask.state(TASK_STATUS_WAITING):
+            # Can't be runahead limited or queued.
+            itask.state_reset(is_runahead=False, is_queued=False)
+            self.task_queue_mgr.remove_task(itask)
+            self.data_store_mgr.delta_task_queued(itask)
+
+        self.data_store_mgr.delta_task_state(itask)
+        self.data_store_mgr.delta_task_outputs(itask)
+        self.workflow_db_mgr.put_update_task_state(itask)
+        self.workflow_db_mgr.put_update_task_outputs(itask)
 
     def _set_prereqs_itask(
         self,

cylc/flow/task_state.py

@@ -416,6 +416,10 @@ def reset(
         """
         req = status
 
+        if forced and req in [TASK_STATUS_SUBMITTED, TASK_STATUS_RUNNING]:
+            # Forcing can only change completion status (there's no job).
+            return False
+
         current_status = (
             self.status,
             self.is_held,
@@ -432,15 +436,7 @@ def reset(
             # no change - do nothing
             return False
 
-        if (
-            forced and
-            req in [TASK_STATUS_SUBMITTED, TASK_STATUS_RUNNING]
-        ):
-            # Forced setting of outputs can cause state change to completed
-            # but not to submitted or running (there's no real job).
-            return False
-
-        # perform the actual state change
+        # perform the state change
         self.status, self.is_held, self.is_queued, self.is_runahead = (
             requested_status
         )
@@ -449,8 +445,6 @@ def reset(
         self.is_updated = True
         self.kill_failed = False
 
-        # Set standard outputs in accordance with task state.
-
         if status is None:
             # NOTE: status is None if the task is being released
             status = self.status