{!join score=.. fromIndex=..} throws "undefined field" for numeric field if from and to schemas are different

       private Query createQuery(final String fromField, final String fromQueryStr,
                                 String fromIndex, final String toField, final ScoreMode scoreMode,
                                 boolean byPassShortCircutCheck) throws SyntaxError {
+        FieldType.LegacyNumericType fromNumericType = req.getSchema().getField(fromField).getType().getNumericType();
+        FieldType.LegacyNumericType toNumericType = req.getSchema().getField(toField).getType().getNumericType();