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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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| .. | ||
| fuzz-data | ||
| parser | ||
| testdata | ||
| bench_test.go | ||
| engine.go | ||
| engine_test.go | ||
| functions.go | ||
| functions_test.go | ||
| fuzz.go | ||
| fuzz_test.go | ||
| promql_test.go | ||
| quantile.go | ||
| query_logger.go | ||
| query_logger_test.go | ||
| test.go | ||
| test_test.go | ||
| value.go | ||
| value_test.go | ||