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9e500345f3
So far, if a target exposes a histogram with both classic and native buckets, a native-histogram enabled Prometheus would ignore the classic buckets. With the new scrape config option `scrape_classic_histograms` set, both buckets will be ingested, creating all the series of a classic histogram in parallel to the native histogram series. For example, a histogram `foo` would create a native histogram series `foo` and classic series called `foo_sum`, `foo_count`, and `foo_bucket`. This feature can be used in a migration strategy from classic to native histograms, where it is desired to have a transition period during which both native and classic histograms are present. Note that two bugs in classic histogram parsing were found and fixed as a byproduct of testing the new feature: 1. Series created from classic _gauge_ histograms didn't get the _sum/_count/_bucket prefix set. 2. Values of classic _float_ histograms weren't parsed properly. Signed-off-by: beorn7 <beorn@grafana.com> |
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| .. | ||
| command-line | ||
| configuration | ||
| images | ||
| querying | ||
| feature_flags.md | ||
| federation.md | ||
| getting_started.md | ||
| http_sd.md | ||
| index.md | ||
| installation.md | ||
| management_api.md | ||
| migration.md | ||
| stability.md | ||
| storage.md | ||