DataSet<Tuple1<Integer>> result = iteration.closeWith(delta, feedback);
result.print();
Plan plan = env.createProgramPlan();
OptimizedPlan oPlan = null;
try {
oPlan = compileNoStats(plan);
} catch(CompilerException e) {
Assert.fail(e.getMessage());
}
oPlan.accept(new Visitor<PlanNode>() {
@Override
public boolean preVisit(PlanNode visitable) {
if (visitable instanceof WorksetIterationPlanNode) {
PlanNode deltaNode = ((WorksetIterationPlanNode) visitable).getSolutionSetDeltaPlanNode();