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clarify dask priority docs #21581

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5 changes: 5 additions & 0 deletions docs/integrations/prefect-dask/index.mdx
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Expand Up @@ -359,6 +359,11 @@ def my_flow():
future = show.submit(2) # high priority task
```

`priority` is a soft scheduling hint for queued work. It does not preempt tasks
that have already been assigned to a worker, so sequential `.submit()` calls may
still start in submission order even when later tasks have a higher priority.
Use `wait_for` or stage your submissions if you need strict ordering.

Another common use case is [resource](http://distributed.dask.org/en/stable/resources.html) annotations:

```python
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