EvalSpec evalSpec = (EvalSpec)ObjectSerializer.deserialize(job.get("pig.reduceFunc", ""));
if (evalSpec == null)
evalSpec = new StarSpec();
else
evalSpec.instantiateFunc(pigContext);
ArrayList<EvalSpec> groupSpecs = (ArrayList<EvalSpec>) ObjectSerializer.deserialize(job.get("pig.groupFuncs", ""));
isInner = new boolean[groupSpecs.size()];
for (int i = 0; i < groupSpecs.size(); i++) {