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prevent task from starving

This commit is contained in:
Gallen 2019-03-17 22:06:27 +08:00
parent a0f2d93fbf
commit 45e1ae628c
1 changed files with 13 additions and 1 deletions
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14
src/master/taskmgr.py
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@ -444,24 +444,36 @@ class TaskMgr(threading.Thread):
if task.at_same_time:
# parallel tasks
if not self.has_waiting(task.subtask_list):
continue
workers = self.find_proper_workers(task.subtask_list)
if len(workers) == 0:
continue
return None, None
else:
for i in range(len(workers)):
task.subtask_list[i].worker = workers[i]
return task, task.subtask_list
else:
# traditional tasks
has_waiting = False
for sub_task in task.subtask_list:
if sub_task.status == WAITING:
has_waiting = True
workers = self.find_proper_workers([sub_task])
if len(workers) > 0:
sub_task.worker = workers[0]
return task, [sub_task]
if has_waiting:
return None, None
return None, None
def has_waiting(self, sub_task_list):
for sub_task in sub_task_list:
if sub_task.status == WAITING:
return True
return False
def find_proper_workers(self, sub_task_list, all_res=False):
nodes = self.get_all_nodes()
if nodes is None or len(nodes) == 0: