Currently if the Feature Reader is set to Generic (Any Format) and the Input Format is set to <Guess format name from extension> and the format name is unrecognized then it reverts to a NULL reader.
|WARN |Generic Reader: Unable to guess a valid reader name from dataset 'x'. A NULL reader will be used instead.
A NULL reader produces no features, so this ends the translation successfully.
The trigger feature should instead be routed through the invalid port so the issue can be caught and dealt with, or at the very least cause a translation failure.
FeatureReader Generic (Any Format) should reject unknown dataset
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Good point! I agree.