sn.setComparator(createComparator(singleInputOperator.getOperatorInfo().getInputType(), sn.getKeys(), getSortOrders(sn.getKeys(), sn.getSortOrders())));
sn.setComparator(createComparator(singleInputOperator.getOperatorInfo().getInputType(), sn.getKeys(), getSortOrders(sn.getKeys(), sn.getSortOrders())));