long ts2 = System.currentTimeMillis();
CQSControllerServlet.valueAccumulator.addToCounter(AccumulatorName.RedisTime, (ts2 - ts1));
log.debug("event=revisibility_check queue_url=" + queueUrl + " shard=" + shard + " invisible_set_size=" + keys.size());
for (String key : keys) {
long ts3 = System.currentTimeMillis();
String val = jedis.hget(queueUrl + "-" + shard + "-H", key);
long ts4 = System.currentTimeMillis();
CQSControllerServlet.valueAccumulator.addToCounter(AccumulatorName.RedisTime, (ts4 - ts3));
if (val == null) {
continue;
}