{
// serialize writes by forcing data through a single writer
PhysicalOperation source = createInMemoryExchange(node, context);
// create the table writer
RecordSink recordSink = recordSinkManager.getRecordSink(node.getTarget());
OperatorFactory operatorFactory = new TableWriterOperatorFactory(context.getNextOperatorId(), recordSink);
Multimap<Symbol, Input> layout = ImmutableMultimap.<Symbol, Input>builder()
.put(node.getOutputSymbols().get(0), new Input(0, 0))
.put(node.getOutputSymbols().get(1), new Input(1, 0))