public LineageTrimmingVisitor(LogicalPlan plan,
Map<LOLoad, DataBag> baseData,
ExampleGenerator eg,
Map<Operator, PhysicalOperator> LogToPhyMap,
PhysicalPlan physPlan, PigContext pc) throws IOException, InterruptedException {
super(plan, new PreOrderDepthFirstWalker(plan));
// this.baseData.putAll(baseData);
this.baseData = baseData;
this.plan = plan;
this.LogToPhyMap = LogToPhyMap;
this.pc = pc;