planTester.buildPlan("a = load 'input';");
planTester.buildPlan("b = load 'input';");
LogicalPlan lp = planTester.buildPlan("c = join a by $0, b by $0 using \"skewed\";");
PhysicalPlan pp = Util.buildPhysicalPlan(lp, pc);
POStore store = GenPhyOp.dummyPigStorageOp();
pp.addAsLeaf(store);
MROperPlan mrPlan = Util.buildMRPlan(pp, pc);
ExecutionEngine exe = pc.getExecutionEngine();
ConfigurationValidator.validatePigProperties(exe.getConfiguration());
Configuration conf = ConfigurationUtil.toConfiguration(exe.getConfiguration());