?I was planning to raise a jira for Calcite but wanted to confirm if this is a bug in calcite HepRelVertex.
1. Is HepRelVertex.getInputs() suppose to return currentRel.getInputs() or empty list (as returned by AbstractRelNode). 2. Also I believe that AbstractRelNode.getInputs() should be made abstract method and not return an empty list as this is misleading and an extended class can accidentally skip the implementation. Thanks Hari?
