PTFPartition iPart = pItr.getPartition();
StructObjectInspector inputOI;
inputOI = (StructObjectInspector) iPart.getOutputOI();
WindowTableFunctionDef wTFnDef = (WindowTableFunctionDef) getTableDef();
Order order = wTFnDef.getOrder().getExpressions().get(0).getOrder();
for(WindowFunctionDef wFn : wTFnDef.getWindowFunctions()) {
boolean processWindow = processWindow(wFn);
pItr.reset();
if ( !processWindow ) {