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Record a Start Time Per Time Series within a View #1220
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This allows exporters to set a more accurate initial interval when a metric row is added.
ian-mi
changed the title
james-bebbington
approved these changes
Jul 13, 2020
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| case *view.CountData: | ||
| data.Start = time.Time{} | ||
| case *view.SumData: | ||
| data.Start = time.Time{} | ||
| case *view.DistributionData: | ||
| data.Start = time.Time{} |
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Nit:
Suggested change
| case *view.CountData: | |
| data.Start = time.Time{} | |
| case *view.SumData: | |
| data.Start = time.Time{} | |
| case *view.DistributionData: | |
| data.Start = time.Time{} | |
| case *view.CountData, *view.SumData, *view.DistributionData: | |
| data.Start = time.Time{} |
(similar for other tests)
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This won't work because go must resolve data to a concrete type in order to reference the Start field.
nilebox
reviewed
Jul 14, 2020
nilebox
approved these changes
Jul 14, 2020
This was referenced Jul 14, 2020
This was referenced Sep 18, 2020
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Currently all time series within a view will use a single start time recorded when the view is registered. Consequently if a time series is first recorded long after the view is registered the first point will be misattributed to a potentially very long time interval. Instead record a separate start time per time series within AggregationData that is recorded when data for that time series is first recorded. This start time is used when converting rows to TimeSeries and may also be used directly by stats exporters.