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Fixes #17308. As explained adding the warn-annotation about conflicting counter reset hints doesn't happen consistently. Furthermore, because of incremental mean calculation being used so far (which includes subtraction), avg calculation always created gauge histograms. The fix is to make Sub behave like Add WRT counter reset handling, and then set the result of a subtraction to gauge explicitly in actual PromQL subtraction (rather than using Sub for something else, like incremental mean calculation). Also, track the presence of a CounterReset hint and a NotCounterReset hint separately for the entirety of aggregated histograms and create the warn-annotation based on that. As a minor fix, this commit also consistently creates the warn annotation in aggregation to be about "aggregation" rather than "subtraction" or "addition", because the latter are just internal operations within the aggregation, which is not of interest for the user. Signed-off-by: beorn7 <beorn@grafana.com> |
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