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After upgrading Prefect I get this warning on tasks with retry settings:
```UserWarning: Task &lt;Task: task_name&gt; has retry settings but some upstream dependencies do not have result types. Cloud features such as input caching and resuming task runs from failure may not work properly.```
The (automatic) retrying seems to be working fine, not sure what this warning refers to. I am aware that I cannot resume task run from failure, but not sure why that is related to retry settings

This page explains it <https://discourse.prefect.io/t/why-results-need-to-be-configured-in-order-to-use-retries/867>

TL;DR: it's required because Prefect may need inputs from upstream tasks in order to retry a task and that's what Results are used for