groupTuples.add(_inputFactory.create(t));
}
List<List<Object>> uniqueGroups = new ArrayList(grouped.keySet());
List<ValueUpdater> updaters = new ArrayList(uniqueGroups.size());
for(List<Object> group: uniqueGroups) {
updaters.add(new ReducerValueUpdater(_agg, grouped.get(group)));
}
List<Object> results = map.multiUpdate(uniqueGroups, updaters);
for(int i=0; i<uniqueGroups.size(); i++) {
List<Object> group = uniqueGroups.get(i);