When client write data, if there are three replicates, the sync method latency time formula should be: sync method latency time = first datanode receive data time + sencond datanode receive data time + third datanode receive data time.
if the three datanode receive data time all are 2 millisecond, so the sync method latency time should is 6 millisecond, but according to our our monitor, the the sync method latency time is 2 millisecond. How to calculate sync method latency time? Thanks, LiuLei