@Override
protected Iterator<Object> getStatsRowKeyIterator(boolean interval) {
ArrayDeque<Iterator<Map.Entry<Long, Map<String, InvocationInfo>>>> d =
new ArrayDeque<Iterator<Map.Entry<Long, Map<String, InvocationInfo>>>>();
ClientInterface ci = VoltDB.instance().getClientInterface();
if (ci != null) {
d.addAll(ci.getIV2InitiatorStats());
}
return new DummyIterator(
new AggregatingIterator(d),
interval);
}