Hi, I measure the latency of a storm topology in the below two ways. And I see a huge difference in the values.
*Approach 1*: attach a start time with every tuple. Note the end time for that tuple in ack(). Calculate the time delta of start and end times. Latency value is ~ 104 ms. *Approach 2*: Using Storm UI parameter "complete Latency" to measure latency. Latency value is ~ 2-3 ms. Could someone please explain why is there a huge difference in Latency calculations? If not on timestamp basis, how does storm internal metrics system calculate the complete latency? Thanks, Preethini
