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Joshua Hesketh 5a4e4f6936 Fix stddev/stdvar when aggregating histograms, NaNs, and infinities (#14941) ... promql: Fix stddev/stdvar when aggregating histograms, NaNs, and Infs Native histograms are ignored when calculating stddev or stdvar. However, for the first series of each group, a `groupedAggregation` is always created. If the first series that was encountered is a histogram then it acts as the equivalent of a 0 point. This change creates the first `groupedAggregation` with the `seen` field set to `false` if the point is a histogram, thus ignoring it like the rest of the aggregation function does. A new `groupedAggregation` will then be created once an actual float value is encountered. This commit also sets the `floatValue` field of the `groupedAggregation` to `NaN`, if the first float value of a group is `NaN` or `±Inf`, so that the outcome is consistently `NaN` once those values are in the mix. (The added tests fail without this change). Signed-off-by: Joshua Hesketh <josh@nitrotech.org> Signed-off-by: beorn7 <beorn@grafana.com> --------- Signed-off-by: Joshua Hesketh <josh@nitrotech.org> Signed-off-by: beorn7 <beorn@grafana.com> Co-authored-by: beorn7 <beorn@grafana.com>		1 month ago
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fuzz-data	textparse: Add fuzzing and fix bug caught	8 years ago
parser	fix: use "ErrorContains" or "EqualError" instead of "Contains(t, err.Error()" and "Equal(t, err.Error()" (#15094)	2 months ago
promqltest	Fix stddev/stdvar when aggregating histograms, NaNs, and infinities (#14941)	1 month ago
bench_test.go	promql: rename holt_winters to double_exponential_smoothing	2 months ago
engine.go	Fix stddev/stdvar when aggregating histograms, NaNs, and infinities (#14941)	1 month ago
engine_internal_test.go	chore!: adopt log/slog, remove go-kit/log	2 months ago
engine_test.go	chore!: adopt log/slog, remove go-kit/log	2 months ago
functions.go	[REFACTOR] PromQL: remove label_join and label_replace stubs	2 months ago
functions_internal_test.go	Fix issue where summation of +/- infinity returns NaN instead of infinity	5 months ago
functions_test.go	Refactor engine creation in tests	5 months ago
fuzz.go	change: No longer ingest OM _created as timeseries if feature-flag 'enable-ct-zero-ingestion' is enabled; fixed OM text CT conversion bug (#14738)	2 months ago
fuzz_test.go	fix: use "ErrorContains" or "EqualError" instead of "Contains(t, err.Error()" and "Equal(t, err.Error()" (#15094)	2 months ago
histogram_stats_iterator.go	Use CopyTo when resetting histogram in stats iterator	4 months ago
histogram_stats_iterator_test.go	Add more test cases	4 months ago
promql_test.go	Refactor engine creation in tests	5 months ago
quantile.go	promql(native histograms): Introduce exponential interpolation	2 months ago
quantile_test.go	PromQL: ignore small errors for bucketQuantile (#13153)	1 year ago
query_logger.go	chore!: adopt log/slog, remove go-kit/log	2 months ago
query_logger_test.go	chore: Fix typos (#14868)	3 months ago
value.go	chore: Fix typos (#14868)	3 months ago
value_test.go	test: move most PromQL tests into separate test package	7 months ago