uranusjr commented on code in PR #28831:
URL: https://github.com/apache/airflow/pull/28831#discussion_r1066682250
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docs/apache-airflow/administration-and-deployment/scheduler.rst:
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@@ -59,6 +59,14 @@ In the UI, it appears as if Airflow is running your tasks a
day **late**
You should refer to :doc:`../core-concepts/dag-run` for details on
scheduling a DAG.
+.. note::
+ The scheduler is designed for high throughput. This is an informed design
decision to achieve scheduling
+ tasks as soon as possible. The scheduler checks how many free slots
available in a pool and schedule at most that number of tasks instances in one
iteration.
+ This means that task priority will only come in to effect when there are
more scheduled tasks
+ waiting than the queue slots. Thus there can be cases where low priority
tasks will be schedule before high priority tasks if they share the same batch.
+ For more read about that you can reference this `Github discussion
<https://github.com/apache/airflow/discussions/28809>`_.
Review Comment:
```suggestion
For more read about that you can reference `this GitHub discussion
<https://github.com/apache/airflow/discussions/28809>`__.
```
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