alreadyPersistedTo = 0;
alreadyReplicatedTo = 0;
alreadyPersistedToMaster = false;
for (Entry<MemcachedNode, ObserveResponse> r : response.entrySet()) {
MemcachedNode node = r.getKey();
ObserveResponse observeResponse = r.getValue();
boolean isMaster = node == master ? true : false;
if (isMaster && observeResponse == ObserveResponse.MODIFIED) {
throw new ObservedModifiedException("Key was modified");
}