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George Krajcsovits 5b7ff92d95 fix(promql): histogram_quantile and histogram_fraction NaN observed in native histogram (#16724) ... * fix(promql): histogram_quantile NaN observed in native histogram Fixes: #16578 See the issue for detailed explanation. When a histogram had only NaN observations and no normal observations, we returned 0 from the quantile, which is completely wrong. If there were normal observations but we went over them, we returned the upper bound of the existing buckets, however that contradicts expectations on histogram_fraction. Now we return NaN if the quantile is calculated to be over all normal observations, falling into NaNs (in a virtual +Inf bucket). We also return info level annotations if we see any NaN observations. The annotation calls out if we returned NaN or even if we took the virtual +Inf bucket into account. Signed-off-by: György Krajcsovits <gyorgy.krajcsovits@grafana.com> * fix(promql): histogram_fraction NaN observed in native histogram Fixes: #16580 According to the specification we should not take NaN observations into account when calculating the fraction. This commit fixes that and adds an info level annotation to let the user know about this. Signed-off-by: György Krajcsovits <gyorgy.krajcsovits@grafana.com>		1 day ago
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fuzz-data	textparse: Add fuzzing and fix bug caught	8 years ago
parser	fix: prevent invalid array access in aggregate expression	1 week ago
promqltest	fix(promql): histogram_quantile and histogram_fraction NaN observed in native histogram (#16724)	1 day ago
bench_test.go	chore(engine): add simple NHCB benchmark	2 months ago
durations.go	Address feedback	3 months ago
durations_test.go	Address feedback	3 months ago
engine.go	promql: reuse `histogramStatsIterator` where possible, and expose it for other implementations to use (#16686)	1 week ago
engine_internal_test.go	chore: enable gci linter (#16245)	3 months ago
engine_test.go	engine: fix PossibleNonCounterInfo annotation for rate and increase. (#16718)	2 weeks ago
functions.go	fix(promql): histogram_quantile and histogram_fraction NaN observed in native histogram (#16724)	1 day ago
functions_internal_test.go	Fix issue where summation of +/- infinity returns NaN instead of infinity	1 year ago
functions_test.go	Refactor engine creation in tests	12 months ago
fuzz.go	feature: type-and-unit-labels (PROM-39 implementation) (#16228)	1 month ago
fuzz_test.go	fix: use "ErrorContains" or "EqualError" instead of "Contains(t, err.Error()" and "Equal(t, err.Error()" (#15094)	9 months ago
histogram_stats_iterator.go	promql: reuse `histogramStatsIterator` where possible, and expose it for other implementations to use (#16686)	1 week ago
histogram_stats_iterator_test.go	promql: reuse `histogramStatsIterator` where possible, and expose it for other implementations to use (#16686)	1 week ago
info.go	chore: enable unused-parameter from revive	4 months ago
info_test.go	[FEATURE] PromQL: Add experimental info function MVP (#14495)	8 months ago
promql_test.go	Refactor engine creation in tests	12 months ago
quantile.go	fix(promql): histogram_quantile and histogram_fraction NaN observed in native histogram (#16724)	1 day ago
quantile_test.go	Export quantile functions (#15190)	7 months ago
query_logger.go	chore!: adopt log/slog, remove go-kit/log	9 months ago
query_logger_test.go	chore: Fix typos (#14868)	10 months ago
value.go	promql: support variable scalar parameter in aggregations in range queries (#16404)	2 months ago
value_test.go	test: move most PromQL tests into separate test package	1 year ago