Hi Chaimaa, Interesting... That basis for those metrics is the difference between a record's timestamp and the current system time while processing it. I wonder if it's negative because of a difference in the way that the producer sets the records' timestamps versus the current time on the Streams instances? For the times that you see NaN, I believe that's expected when there have not yet been any data points measured in the metric yet.
I hope this helps, -John On Thu, Apr 14, 2022, at 04:46, Chaimaa LOTFI wrote: > CONFIDENTIAL & RESTRICTED > > > Hello, I hope that you are doing well. > I have a quick question please, I created a Kafka streams dashboard > which works well, expect that we got a negative latency for record > end2end latency with this metric > (kafka_streams_stream_processor_node_metrics_record_e2e_latency_min), I > was looking why, while I saw in Thanos that it gives either NaN or a > negative value! so I am still looking for that. Do you have any idea > why? > Like we can't get a negative latency anyways, so what does this metric > calculate exactly? > Thank you in advance! > Best regards > > On 2020/05/13 02:27:54 Sophie Blee-Goldman wrote: >> Hey all, >> >> I'd like to kick off discussion on KIP-613 which aims to add end-to-end >> latency metrics to Streams. Please take a look: >> >> https://cwiki.apache.org/confluence/display/KAFKA/KIP-613%3A+Add+end-to-end+latency+metrics+to+Streams >> >> Cheers, >> Sophie >>
