lvForwardRR.put(tabCol[0], tabCol[1], col);
ExprNodeDesc colExpr = new ExprNodeColumnDesc(col);
colList.add(colExpr);
colNames.add(colExpr.getName());
lvfColExprMap.put(col.getInternalName(), colExpr);
selColExprMap.put(col.getInternalName(), colExpr.clone());
}
Operator lvForward = putOpInsertMap(OperatorFactory.getAndMakeChild(
new LateralViewForwardDesc(), new RowSchema(lvForwardRR.getColumnInfos()),
op), lvForwardRR);