TransportMergeNodeAction.mergeRowsAction, // NOTICE: hard coded transport action, should be delivered by collectNode
request,
new BaseTransportResponseHandler<DistributedResultResponse>() {
@Override
public DistributedResultResponse newInstance() {
return new DistributedResultResponse();
}
@Override
public void handleResponse(DistributedResultResponse response) {
if (logger.isTraceEnabled()) {