Fail reload if derived columns can't be created #11559
Merged
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Currently, a reload operation silently fails without errors when a newly added derived column can't be created due to transform function failures. This change makes sure we always fail a reload op with an error if newly added derived columns can't be created. If for whatever reason this behaviour is desirable for certain reload ops, we may add a new option (like forceDownload) to the reload API to toggle.