// Save the old walker and use childWalker as current Walker
pushWalker(childWalker);
ExpToPhyTranslationVisitor expTranslationVisitor = new
ExpToPhyTranslationVisitor(expLogicalPlan,
childWalker, currentOp, expPhysicalPlan, logToPhyMap);
expTranslationVisitor.visit();
popWalker();
PhysicalOperator root = expPhysicalPlan.getLeaves().get(0);
try {
UDFContext.getUDFContext().addJobConf(ConfigurationUtil.toConfiguration(pc.getProperties(), true));
PigHadoopLogger pigHadoopLogger = PigHadoopLogger.getInstance();