Inefficient plan using cartesian join

We're trying to write a federated query, and we can't get Teiid to create an optimal plan. It is using a cartesian join, which causes Teiid to take a few hours and run out of memory, when we should be fetching a relatively small number of rows. We have tried using the new MAKEIND hint in 5.2, but Teiid seems to ignore it in this case.

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