milton0825 commented on a change in pull request #4927: [AIRFLOW-4106]
instrument starving tasks in pool
URL: https://github.com/apache/airflow/pull/4927#discussion_r266635269
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File path: airflow/jobs.py
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@@ -1143,13 +1145,16 @@ def _find_executable_task_instances(self,
simple_dag_bag, states, session=None):
# DAG IDs with running tasks that equal the concurrency limit of
the dag
dag_id_to_possibly_running_task_count = {}
- for task_instance in priority_sorted_task_instances:
+ # Number of tasks that cannot be scheduled because of no open slot
in pool
+ num_starved_tasks = 0
+ for i, task_instance in enumerate(priority_sorted_task_instances):
Review comment:
@Fokko which variable are you referring to? I assume it is i.
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