Discrepancy in Data Displayed in Different Metrics
TLDR Aditya noticed a discrepancy in data displayed in different metrics. Srikanth explained that it was due to the aggregation interval.
Srikanth
Thu, 24 Aug 2023 07:49:22 UTC> We’re sending data from 4 pods of the same process What is the type of this measurement? > In NOOP, it’s showing only 4 curves but in COUNT it’s showing 8 and in SUM the value is coming double of what we are getting if we manually add the values from the 4 curves When you say _8,_ are you saying 8 “curves” or the number 8 on y-axis? The SUM simply sums across the series. Please share the original data and the result.
Aditya
Thu, 24 Aug 2023 07:51:06 UTCThis is NOOP
Aditya
Thu, 24 Aug 2023 07:51:45 UTCThis is COUNT
Aditya
Thu, 24 Aug 2023 07:52:24 UTCThis is Count Distinct
Aditya
Thu, 24 Aug 2023 07:53:06 UTCThis is SUM
Aditya
Thu, 24 Aug 2023 07:54:15 UTCIn NOOP, adding the values give 24K
Aditya
Thu, 24 Aug 2023 07:54:25 UTCIn SUM its showing 48K
Srikanth
Thu, 24 Aug 2023 07:54:31 UTCPlease read this doc to understand what each of them do
Aditya
Thu, 24 Aug 2023 07:55:02 UTCIt was working fine till yesterday. Since last night it's behaving like this
Aditya
Fri, 25 Aug 2023 04:32:08 UTCSrikanth I had pretty much followed that document to create the dashboards earlier and they worked fine. Only since yesterday this anomaly is happening. Please refer to the above screenshots for data.
Srikanth
Fri, 25 Aug 2023 11:27:31 UTCThere is nothing changed from SigNoz side. Please check what has changed from your end since last time.
Aditya
Fri, 25 Aug 2023 11:31:00 UTCSrikanth But it it possible that in NOOP it shows 4 data sets and in COUNT it shows value as 8. Can you explain how Distinct Count value is 4 and Count value is 8.
Srikanth
Fri, 25 Aug 2023 11:36:31 UTCIt means there are only 4 distinct values but 8 in total for the aggregation interval of 60 seconds.
Aditya
Fri, 25 Aug 2023 11:38:25 UTCSo are you saying that during the aggregation interval the values are coming twice? But we have logs which prints whenever data is inserted into the gauge metrics and that's coming once only
Srikanth
Fri, 25 Aug 2023 11:40:07 UTCYes, they are reported twice which is why you are seeing 8
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Aditya
Thu, 24 Aug 2023 06:50:10 UTCWe're sending data from 4 pods of the same process. In NOOP, it's showing only 4 curves but in COUNT it's showing 8 and in SUM the value is coming double of what we are getting if we manually add the values from the 4 curves