LogicalPlanOptimizer optimizer = new LogicalPlanOptimizer( currDAG.lp, 3, optimizerRules );
optimizer.optimize();
currDAG.lp.explain(lps, format, verbose);
pp.explain(pps, format, verbose);
MapRedUtil.checkLeafIsStore(pp, pigContext);
MapReduceLauncher launcher = new MapReduceLauncher();
launcher.explain(pp, pigContext, eps, format, verbose);