do {
int cnt = 0;
Util.Timer timer = Timer.startNewTimer();
Future<ResponseStatus> futureStat = null;
while(cnt < reqCnt){
futureLong = pipeline.lpush(key, data);
cnt++;
}
long reqDoneTime = timer.mark();
assert futureStat != null;
@SuppressWarnings({ "null", "unused" })