prometheus/promql/promqltest/testdata/native_histograms.test
Filip Petkovski acb6c1ae4b
Fix decoding buckets for native histograms in binops
The optimizer which detects cases where histogram buckets can be skipped
does not take into account binary expressions. This can lead to buckets
not being decoded if a metric is used with both histogram_fraction/quantile and
histogram_sum/count in the same expression.

Signed-off-by: Filip Petkovski <filip.petkovsky@gmail.com>
2024-07-10 11:55:29 +02:00

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# Minimal valid case: an empty histogram.
load 5m
empty_histogram {{}}
eval instant at 5m empty_histogram
{__name__="empty_histogram"} {{}}
eval instant at 5m histogram_count(empty_histogram)
{} 0
eval instant at 5m histogram_sum(empty_histogram)
{} 0
eval instant at 5m histogram_avg(empty_histogram)
{} NaN
eval instant at 5m histogram_fraction(-Inf, +Inf, empty_histogram)
{} NaN
eval instant at 5m histogram_fraction(0, 8, empty_histogram)
{} NaN
# buckets:[1 2 1] means 1 observation in the 1st bucket, 2 observations in the 2nd and 1 observation in the 3rd (total 4).
load 5m
single_histogram {{schema:0 sum:5 count:4 buckets:[1 2 1]}}
# histogram_count extracts the count property from the histogram.
eval instant at 5m histogram_count(single_histogram)
{} 4
# histogram_sum extracts the sum property from the histogram.
eval instant at 5m histogram_sum(single_histogram)
{} 5
# histogram_avg calculates the average from sum and count properties.
eval instant at 5m histogram_avg(single_histogram)
{} 1.25
# We expect half of the values to fall in the range 1 < x <= 2.
eval instant at 5m histogram_fraction(1, 2, single_histogram)
{} 0.5
# We expect all values to fall in the range 0 < x <= 8.
eval instant at 5m histogram_fraction(0, 8, single_histogram)
{} 1
# Median is 1.5 due to linear estimation of the midpoint of the middle bucket, whose values are within range 1 < x <= 2.
eval instant at 5m histogram_quantile(0.5, single_histogram)
{} 1.5
# Repeat the same histogram 10 times.
load 5m
multi_histogram {{schema:0 sum:5 count:4 buckets:[1 2 1]}}x10
eval instant at 5m histogram_count(multi_histogram)
{} 4
eval instant at 5m histogram_sum(multi_histogram)
{} 5
eval instant at 5m histogram_avg(multi_histogram)
{} 1.25
eval instant at 5m histogram_fraction(1, 2, multi_histogram)
{} 0.5
eval instant at 5m histogram_quantile(0.5, multi_histogram)
{} 1.5
# Each entry should look the same as the first.
eval instant at 50m histogram_count(multi_histogram)
{} 4
eval instant at 50m histogram_sum(multi_histogram)
{} 5
eval instant at 50m histogram_avg(multi_histogram)
{} 1.25
eval instant at 50m histogram_fraction(1, 2, multi_histogram)
{} 0.5
eval instant at 50m histogram_quantile(0.5, multi_histogram)
{} 1.5
# Accumulate the histogram addition for 10 iterations, offset is a bucket position where offset:0 is always the bucket
# with an upper limit of 1 and offset:1 is the bucket which follows to the right. Negative offsets represent bucket
# positions for upper limits <1 (tending toward zero), where offset:-1 is the bucket to the left of offset:0.
load 5m
incr_histogram {{schema:0 sum:4 count:4 buckets:[1 2 1]}}+{{sum:2 count:1 buckets:[1] offset:1}}x10
eval instant at 5m histogram_count(incr_histogram)
{} 5
eval instant at 5m histogram_sum(incr_histogram)
{} 6
eval instant at 5m histogram_avg(incr_histogram)
{} 1.2
# We expect 3/5ths of the values to fall in the range 1 < x <= 2.
eval instant at 5m histogram_fraction(1, 2, incr_histogram)
{} 0.6
eval instant at 5m histogram_quantile(0.5, incr_histogram)
{} 1.5
eval instant at 50m incr_histogram
{__name__="incr_histogram"} {{count:14 sum:24 buckets:[1 12 1]}}
eval instant at 50m histogram_count(incr_histogram)
{} 14
eval instant at 50m histogram_sum(incr_histogram)
{} 24
eval instant at 50m histogram_avg(incr_histogram)
{} 1.7142857142857142
# We expect 12/14ths of the values to fall in the range 1 < x <= 2.
eval instant at 50m histogram_fraction(1, 2, incr_histogram)
{} 0.8571428571428571
eval instant at 50m histogram_quantile(0.5, incr_histogram)
{} 1.5
# Per-second average rate of increase should be 1/(5*60) for count and buckets, then 2/(5*60) for sum.
eval instant at 50m rate(incr_histogram[5m])
{} {{count:0.0033333333333333335 sum:0.006666666666666667 offset:1 buckets:[0.0033333333333333335]}}
# Calculate the 50th percentile of observations over the last 10m.
eval instant at 50m histogram_quantile(0.5, rate(incr_histogram[10m]))
{} 1.5
# Schema represents the histogram resolution, different schema have compatible bucket boundaries, e.g.:
# 0: 1 2 4 8 16 32 64 (higher resolution)
# -1: 1 4 16 64 (lower resolution)
#
# Histograms can be merged as long as the histogram to the right is same resolution or higher.
load 5m
low_res_histogram {{schema:-1 sum:4 count:1 buckets:[1] offset:1}}+{{schema:0 sum:4 count:4 buckets:[2 2] offset:1}}x1
eval instant at 5m low_res_histogram
{__name__="low_res_histogram"} {{schema:-1 count:5 sum:8 offset:1 buckets:[5]}}
eval instant at 5m histogram_count(low_res_histogram)
{} 5
eval instant at 5m histogram_sum(low_res_histogram)
{} 8
eval instant at 5m histogram_avg(low_res_histogram)
{} 1.6
# We expect all values to fall into the lower-resolution bucket with the range 1 < x <= 4.
eval instant at 5m histogram_fraction(1, 4, low_res_histogram)
{} 1
# z_bucket:1 means there is one observation in the zero bucket and z_bucket_w:0.5 means the zero bucket has the range
# 0 < x <= 0.5. Sum and count are expected to represent all observations in the histogram, including those in the zero bucket.
load 5m
single_zero_histogram {{schema:0 z_bucket:1 z_bucket_w:0.5 sum:0.25 count:1}}
eval instant at 5m histogram_count(single_zero_histogram)
{} 1
eval instant at 5m histogram_sum(single_zero_histogram)
{} 0.25
eval instant at 5m histogram_avg(single_zero_histogram)
{} 0.25
# When only the zero bucket is populated, or there are negative buckets, the distribution is assumed to be equally
# distributed around zero; i.e. that there are an equal number of positive and negative observations. Therefore the
# entire distribution must lie within the full range of the zero bucket, in this case: -0.5 < x <= +0.5.
eval instant at 5m histogram_fraction(-0.5, 0.5, single_zero_histogram)
{} 1
# Half of the observations are estimated to be zero, as this is the midpoint between -0.5 and +0.5.
eval instant at 5m histogram_quantile(0.5, single_zero_histogram)
{} 0
# Let's turn single_histogram upside-down.
load 5m
negative_histogram {{schema:0 sum:-5 count:4 n_buckets:[1 2 1]}}
eval instant at 5m histogram_count(negative_histogram)
{} 4
eval instant at 5m histogram_sum(negative_histogram)
{} -5
eval instant at 5m histogram_avg(negative_histogram)
{} -1.25
# We expect half of the values to fall in the range -2 < x <= -1.
eval instant at 5m histogram_fraction(-2, -1, negative_histogram)
{} 0.5
eval instant at 5m histogram_quantile(0.5, negative_histogram)
{} -1.5
# Two histogram samples.
load 5m
two_samples_histogram {{schema:0 sum:4 count:4 buckets:[1 2 1]}} {{schema:0 sum:-4 count:4 n_buckets:[1 2 1]}}
# We expect to see the newest sample.
eval instant at 10m histogram_count(two_samples_histogram)
{} 4
eval instant at 10m histogram_sum(two_samples_histogram)
{} -4
eval instant at 10m histogram_avg(two_samples_histogram)
{} -1
eval instant at 10m histogram_fraction(-2, -1, two_samples_histogram)
{} 0.5
eval instant at 10m histogram_quantile(0.5, two_samples_histogram)
{} -1.5
# Add two histograms with negated data.
load 5m
balanced_histogram {{schema:0 sum:4 count:4 buckets:[1 2 1]}}+{{schema:0 sum:-4 count:4 n_buckets:[1 2 1]}}x1
eval instant at 5m histogram_count(balanced_histogram)
{} 8
eval instant at 5m histogram_sum(balanced_histogram)
{} 0
eval instant at 5m histogram_avg(balanced_histogram)
{} 0
eval instant at 5m histogram_fraction(0, 4, balanced_histogram)
{} 0.5
# If the quantile happens to be located in a span of empty buckets, the actually returned value is the lower bound of
# the first populated bucket after the span of empty buckets.
eval instant at 5m histogram_quantile(0.5, balanced_histogram)
{} 0.5
# Add histogram to test sum(last_over_time) regression
load 5m
incr_sum_histogram{number="1"} {{schema:0 sum:0 count:0 buckets:[1]}}+{{schema:0 sum:1 count:1 buckets:[1]}}x10
incr_sum_histogram{number="2"} {{schema:0 sum:0 count:0 buckets:[1]}}+{{schema:0 sum:2 count:1 buckets:[1]}}x10
eval instant at 50m histogram_sum(sum(incr_sum_histogram))
{} 30
eval instant at 50m histogram_sum(sum(last_over_time(incr_sum_histogram[5m])))
{} 30
# Apply rate function to histogram.
load 15s
histogram_rate {{schema:1 count:12 sum:18.4 z_bucket:2 z_bucket_w:0.001 buckets:[1 2 0 1 1] n_buckets:[1 2 0 1 1]}}+{{schema:1 count:9 sum:18.4 z_bucket:1 z_bucket_w:0.001 buckets:[1 1 0 1 1] n_buckets:[1 1 0 1 1]}}x100
eval instant at 5m rate(histogram_rate[45s])
{} {{schema:1 count:0.6 sum:1.2266666666666652 z_bucket:0.06666666666666667 z_bucket_w:0.001 buckets:[0.06666666666666667 0.06666666666666667 0 0.06666666666666667 0.06666666666666667] n_buckets:[0.06666666666666667 0.06666666666666667 0 0.06666666666666667 0.06666666666666667]}}
eval range from 5m to 5m30s step 30s rate(histogram_rate[45s])
{} {{schema:1 count:0.6 sum:1.2266666666666652 z_bucket:0.06666666666666667 z_bucket_w:0.001 buckets:[0.06666666666666667 0.06666666666666667 0 0.06666666666666667 0.06666666666666667] n_buckets:[0.06666666666666667 0.06666666666666667 0 0.06666666666666667 0.06666666666666667]}}x1
# Apply count and sum function to histogram.
load 10m
histogram_count_sum_2 {{schema:0 count:24 sum:100 z_bucket:4 z_bucket_w:0.001 buckets:[2 3 0 1 4] n_buckets:[2 3 0 1 4]}}x1
eval instant at 10m histogram_count(histogram_count_sum_2)
{} 24
eval instant at 10m histogram_sum(histogram_count_sum_2)
{} 100
# Apply stddev and stdvar function to histogram with {1, 2, 3, 4} (low res).
load 10m
histogram_stddev_stdvar_1 {{schema:2 count:4 sum:10 buckets:[1 0 0 0 1 0 0 1 1]}}x1
eval instant at 10m histogram_stddev(histogram_stddev_stdvar_1)
{} 1.0787993180043811
eval instant at 10m histogram_stdvar(histogram_stddev_stdvar_1)
{} 1.163807968526718
# Apply stddev and stdvar function to histogram with {1, 1, 1, 1} (high res).
load 10m
histogram_stddev_stdvar_2 {{schema:8 count:10 sum:10 buckets:[1 2 3 4]}}x1
eval instant at 10m histogram_stddev(histogram_stddev_stdvar_2)
{} 0.0048960313898237465
eval instant at 10m histogram_stdvar(histogram_stddev_stdvar_2)
{} 2.3971123370139447e-05
# Apply stddev and stdvar function to histogram with {-50, -8, 0, 3, 8, 9}.
load 10m
histogram_stddev_stdvar_3 {{schema:3 count:7 sum:62 z_bucket:1 buckets:[0 0 0 0 0 0 0 0 0 0 0 0 0 1 0 0 0 0 0 0 0 0 0 0 1 0 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 ] n_buckets:[0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 ]}}x1
eval instant at 10m histogram_stddev(histogram_stddev_stdvar_3)
{} 42.947236400258
eval instant at 10m histogram_stdvar(histogram_stddev_stdvar_3)
{} 1844.4651144196398
# Apply stddev and stdvar function to histogram with {-100000, -10000, -1000, -888, -888, -100, -50, -9, -8, -3}.
load 10m
histogram_stddev_stdvar_4 {{schema:0 count:10 sum:-112946 z_bucket:0 n_buckets:[0 0 1 1 1 0 1 1 0 0 3 0 0 0 1 0 0 1]}}x1
eval instant at 10m histogram_stddev(histogram_stddev_stdvar_4)
{} 27556.344499842
eval instant at 10m histogram_stdvar(histogram_stddev_stdvar_4)
{} 759352122.1939945
# Apply stddev and stdvar function to histogram with {-10x10}.
load 10m
histogram_stddev_stdvar_5 {{schema:0 count:10 sum:-100 z_bucket:0 n_buckets:[0 0 0 0 10]}}x1
eval instant at 10m histogram_stddev(histogram_stddev_stdvar_5)
{} 1.3137084989848
eval instant at 10m histogram_stdvar(histogram_stddev_stdvar_5)
{} 1.725830020304794
# Apply stddev and stdvar function to histogram with {-50, -8, 0, 3, 8, 9, NaN}.
load 10m
histogram_stddev_stdvar_6 {{schema:3 count:7 sum:NaN z_bucket:1 buckets:[0 0 0 0 0 0 0 0 0 0 0 0 0 1 0 0 0 0 0 0 0 0 0 0 1 0 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 ] n_buckets:[0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 ]}}x1
eval instant at 10m histogram_stddev(histogram_stddev_stdvar_6)
{} NaN
eval instant at 10m histogram_stdvar(histogram_stddev_stdvar_6)
{} NaN
# Apply stddev and stdvar function to histogram with {-50, -8, 0, 3, 8, 9, Inf}.
load 10m
histogram_stddev_stdvar_7 {{schema:3 count:7 sum:Inf z_bucket:1 buckets:[0 0 0 0 0 0 0 0 0 0 0 0 0 1 0 0 0 0 0 0 0 0 0 0 1 0 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 ] n_buckets:[0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 ]}}x1
eval instant at 10m histogram_stddev(histogram_stddev_stdvar_7)
{} Inf
eval instant at 10m histogram_stdvar(histogram_stddev_stdvar_7)
{} Inf
# Apply quantile function to histogram with all positive buckets with zero bucket.
load 10m
histogram_quantile_1 {{schema:0 count:12 sum:100 z_bucket:2 z_bucket_w:0.001 buckets:[2 3 0 1 4]}}x1
eval_warn instant at 10m histogram_quantile(1.001, histogram_quantile_1)
{} Inf
eval instant at 10m histogram_quantile(1, histogram_quantile_1)
{} 16
eval instant at 10m histogram_quantile(0.99, histogram_quantile_1)
{} 15.759999999999998
eval instant at 10m histogram_quantile(0.9, histogram_quantile_1)
{} 13.600000000000001
eval instant at 10m histogram_quantile(0.6, histogram_quantile_1)
{} 4.799999999999997
eval instant at 10m histogram_quantile(0.5, histogram_quantile_1)
{} 1.6666666666666665
eval instant at 10m histogram_quantile(0.1, histogram_quantile_1)
{} 0.0006000000000000001
eval instant at 10m histogram_quantile(0, histogram_quantile_1)
{} 0
eval_warn instant at 10m histogram_quantile(-1, histogram_quantile_1)
{} -Inf
# Apply quantile function to histogram with all negative buckets with zero bucket.
load 10m
histogram_quantile_2 {{schema:0 count:12 sum:100 z_bucket:2 z_bucket_w:0.001 n_buckets:[2 3 0 1 4]}}x1
eval_warn instant at 10m histogram_quantile(1.001, histogram_quantile_2)
{} Inf
eval instant at 10m histogram_quantile(1, histogram_quantile_2)
{} 0
eval instant at 10m histogram_quantile(0.99, histogram_quantile_2)
{} -6.000000000000048e-05
eval instant at 10m histogram_quantile(0.9, histogram_quantile_2)
{} -0.0005999999999999996
eval instant at 10m histogram_quantile(0.5, histogram_quantile_2)
{} -1.6666666666666667
eval instant at 10m histogram_quantile(0.1, histogram_quantile_2)
{} -13.6
eval instant at 10m histogram_quantile(0, histogram_quantile_2)
{} -16
eval_warn instant at 10m histogram_quantile(-1, histogram_quantile_2)
{} -Inf
# Apply quantile function to histogram with both positive and negative buckets with zero bucket.
load 10m
histogram_quantile_3 {{schema:0 count:24 sum:100 z_bucket:4 z_bucket_w:0.001 buckets:[2 3 0 1 4] n_buckets:[2 3 0 1 4]}}x1
eval_warn instant at 10m histogram_quantile(1.001, histogram_quantile_3)
{} Inf
eval instant at 10m histogram_quantile(1, histogram_quantile_3)
{} 16
eval instant at 10m histogram_quantile(0.99, histogram_quantile_3)
{} 15.519999999999996
eval instant at 10m histogram_quantile(0.9, histogram_quantile_3)
{} 11.200000000000003
eval instant at 10m histogram_quantile(0.7, histogram_quantile_3)
{} 1.2666666666666657
eval instant at 10m histogram_quantile(0.55, histogram_quantile_3)
{} 0.0006000000000000005
eval instant at 10m histogram_quantile(0.5, histogram_quantile_3)
{} 0
eval instant at 10m histogram_quantile(0.45, histogram_quantile_3)
{} -0.0005999999999999996
eval instant at 10m histogram_quantile(0.3, histogram_quantile_3)
{} -1.266666666666667
eval instant at 10m histogram_quantile(0.1, histogram_quantile_3)
{} -11.2
eval instant at 10m histogram_quantile(0.01, histogram_quantile_3)
{} -15.52
eval instant at 10m histogram_quantile(0, histogram_quantile_3)
{} -16
eval_warn instant at 10m histogram_quantile(-1, histogram_quantile_3)
{} -Inf
# Apply fraction function to empty histogram.
load 10m
histogram_fraction_1 {{}}x1
eval instant at 10m histogram_fraction(3.1415, 42, histogram_fraction_1)
{} NaN
# Apply fraction function to histogram with positive and zero buckets.
load 10m
histogram_fraction_2 {{schema:0 count:12 sum:100 z_bucket:2 z_bucket_w:0.001 buckets:[2 3 0 1 4]}}x1
eval instant at 10m histogram_fraction(0, +Inf, histogram_fraction_2)
{} 1
eval instant at 10m histogram_fraction(-Inf, 0, histogram_fraction_2)
{} 0
eval instant at 10m histogram_fraction(-0.001, 0, histogram_fraction_2)
{} 0
eval instant at 10m histogram_fraction(0, 0.001, histogram_fraction_2)
{} 0.16666666666666666
eval instant at 10m histogram_fraction(0, 0.0005, histogram_fraction_2)
{} 0.08333333333333333
eval instant at 10m histogram_fraction(0.001, inf, histogram_fraction_2)
{} 0.8333333333333334
eval instant at 10m histogram_fraction(-inf, -0.001, histogram_fraction_2)
{} 0
eval instant at 10m histogram_fraction(1, 2, histogram_fraction_2)
{} 0.25
eval instant at 10m histogram_fraction(1.5, 2, histogram_fraction_2)
{} 0.125
eval instant at 10m histogram_fraction(1, 8, histogram_fraction_2)
{} 0.3333333333333333
eval instant at 10m histogram_fraction(1, 6, histogram_fraction_2)
{} 0.2916666666666667
eval instant at 10m histogram_fraction(1.5, 6, histogram_fraction_2)
{} 0.16666666666666666
eval instant at 10m histogram_fraction(-2, -1, histogram_fraction_2)
{} 0
eval instant at 10m histogram_fraction(-2, -1.5, histogram_fraction_2)
{} 0
eval instant at 10m histogram_fraction(-8, -1, histogram_fraction_2)
{} 0
eval instant at 10m histogram_fraction(-6, -1, histogram_fraction_2)
{} 0
eval instant at 10m histogram_fraction(-6, -1.5, histogram_fraction_2)
{} 0
eval instant at 10m histogram_fraction(42, 3.1415, histogram_fraction_2)
{} 0
eval instant at 10m histogram_fraction(0, 0, histogram_fraction_2)
{} 0
eval instant at 10m histogram_fraction(0.000001, 0.000001, histogram_fraction_2)
{} 0
eval instant at 10m histogram_fraction(42, 42, histogram_fraction_2)
{} 0
eval instant at 10m histogram_fraction(-3.1, -3.1, histogram_fraction_2)
{} 0
eval instant at 10m histogram_fraction(3.1415, NaN, histogram_fraction_2)
{} NaN
eval instant at 10m histogram_fraction(NaN, 42, histogram_fraction_2)
{} NaN
eval instant at 10m histogram_fraction(NaN, NaN, histogram_fraction_2)
{} NaN
eval instant at 10m histogram_fraction(-Inf, +Inf, histogram_fraction_2)
{} 1
# Apply fraction function to histogram with negative and zero buckets.
load 10m
histogram_fraction_3 {{schema:0 count:12 sum:100 z_bucket:2 z_bucket_w:0.001 n_buckets:[2 3 0 1 4]}}x1
eval instant at 10m histogram_fraction(0, +Inf, histogram_fraction_3)
{} 0
eval instant at 10m histogram_fraction(-Inf, 0, histogram_fraction_3)
{} 1
eval instant at 10m histogram_fraction(-0.001, 0, histogram_fraction_3)
{} 0.16666666666666666
eval instant at 10m histogram_fraction(0, 0.001, histogram_fraction_3)
{} 0
eval instant at 10m histogram_fraction(-0.0005, 0, histogram_fraction_3)
{} 0.08333333333333333
eval instant at 10m histogram_fraction(0.001, inf, histogram_fraction_3)
{} 0
eval instant at 10m histogram_fraction(-inf, -0.001, histogram_fraction_3)
{} 0.8333333333333334
eval instant at 10m histogram_fraction(1, 2, histogram_fraction_3)
{} 0
eval instant at 10m histogram_fraction(1.5, 2, histogram_fraction_3)
{} 0
eval instant at 10m histogram_fraction(1, 8, histogram_fraction_3)
{} 0
eval instant at 10m histogram_fraction(1, 6, histogram_fraction_3)
{} 0
eval instant at 10m histogram_fraction(1.5, 6, histogram_fraction_3)
{} 0
eval instant at 10m histogram_fraction(-2, -1, histogram_fraction_3)
{} 0.25
eval instant at 10m histogram_fraction(-2, -1.5, histogram_fraction_3)
{} 0.125
eval instant at 10m histogram_fraction(-8, -1, histogram_fraction_3)
{} 0.3333333333333333
eval instant at 10m histogram_fraction(-6, -1, histogram_fraction_3)
{} 0.2916666666666667
eval instant at 10m histogram_fraction(-6, -1.5, histogram_fraction_3)
{} 0.16666666666666666
eval instant at 10m histogram_fraction(42, 3.1415, histogram_fraction_3)
{} 0
eval instant at 10m histogram_fraction(0, 0, histogram_fraction_3)
{} 0
eval instant at 10m histogram_fraction(0.000001, 0.000001, histogram_fraction_3)
{} 0
eval instant at 10m histogram_fraction(42, 42, histogram_fraction_3)
{} 0
eval instant at 10m histogram_fraction(-3.1, -3.1, histogram_fraction_3)
{} 0
eval instant at 10m histogram_fraction(3.1415, NaN, histogram_fraction_3)
{} NaN
eval instant at 10m histogram_fraction(NaN, 42, histogram_fraction_3)
{} NaN
eval instant at 10m histogram_fraction(NaN, NaN, histogram_fraction_3)
{} NaN
eval instant at 10m histogram_fraction(-Inf, +Inf, histogram_fraction_3)
{} 1
# Apply fraction function to histogram with both positive, negative and zero buckets.
load 10m
histogram_fraction_4 {{schema:0 count:24 sum:100 z_bucket:4 z_bucket_w:0.001 buckets:[2 3 0 1 4] n_buckets:[2 3 0 1 4]}}x1
eval instant at 10m histogram_fraction(0, +Inf, histogram_fraction_4)
{} 0.5
eval instant at 10m histogram_fraction(-Inf, 0, histogram_fraction_4)
{} 0.5
eval instant at 10m histogram_fraction(-0.001, 0, histogram_fraction_4)
{} 0.08333333333333333
eval instant at 10m histogram_fraction(0, 0.001, histogram_fraction_4)
{} 0.08333333333333333
eval instant at 10m histogram_fraction(-0.0005, 0.0005, histogram_fraction_4)
{} 0.08333333333333333
eval instant at 10m histogram_fraction(0.001, inf, histogram_fraction_4)
{} 0.4166666666666667
eval instant at 10m histogram_fraction(-inf, -0.001, histogram_fraction_4)
{} 0.4166666666666667
eval instant at 10m histogram_fraction(1, 2, histogram_fraction_4)
{} 0.125
eval instant at 10m histogram_fraction(1.5, 2, histogram_fraction_4)
{} 0.0625
eval instant at 10m histogram_fraction(1, 8, histogram_fraction_4)
{} 0.16666666666666666
eval instant at 10m histogram_fraction(1, 6, histogram_fraction_4)
{} 0.14583333333333334
eval instant at 10m histogram_fraction(1.5, 6, histogram_fraction_4)
{} 0.08333333333333333
eval instant at 10m histogram_fraction(-2, -1, histogram_fraction_4)
{} 0.125
eval instant at 10m histogram_fraction(-2, -1.5, histogram_fraction_4)
{} 0.0625
eval instant at 10m histogram_fraction(-8, -1, histogram_fraction_4)
{} 0.16666666666666666
eval instant at 10m histogram_fraction(-6, -1, histogram_fraction_4)
{} 0.14583333333333334
eval instant at 10m histogram_fraction(-6, -1.5, histogram_fraction_4)
{} 0.08333333333333333
eval instant at 10m histogram_fraction(42, 3.1415, histogram_fraction_4)
{} 0
eval instant at 10m histogram_fraction(0, 0, histogram_fraction_4)
{} 0
eval instant at 10m histogram_fraction(0.000001, 0.000001, histogram_fraction_4)
{} 0
eval instant at 10m histogram_fraction(42, 42, histogram_fraction_4)
{} 0
eval instant at 10m histogram_fraction(-3.1, -3.1, histogram_fraction_4)
{} 0
eval instant at 10m histogram_fraction(3.1415, NaN, histogram_fraction_4)
{} NaN
eval instant at 10m histogram_fraction(NaN, 42, histogram_fraction_4)
{} NaN
eval instant at 10m histogram_fraction(NaN, NaN, histogram_fraction_4)
{} NaN
eval instant at 10m histogram_fraction(-Inf, +Inf, histogram_fraction_4)
{} 1
eval instant at 10m histogram_sum(scalar(histogram_fraction(-Inf, +Inf, sum(histogram_fraction_4))) * histogram_fraction_4)
{} 100
clear
# Counter reset only noticeable in a single bucket.
load 5m
reset_in_bucket {{schema:0 count:4 sum:5 buckets:[1 2 1]}} {{schema:0 count:5 sum:6 buckets:[1 1 3]}} {{schema:0 count:6 sum:7 buckets:[1 2 3]}}
eval instant at 10m increase(reset_in_bucket[15m])
{} {{count:9 sum:10.5 buckets:[1.5 3 4.5]}}
# The following two test the "fast path" where only sum and count is decoded.
eval instant at 10m histogram_count(increase(reset_in_bucket[15m]))
{} 9
eval instant at 10m histogram_sum(increase(reset_in_bucket[15m]))
{} 10.5
clear
# Test native histograms with custom buckets.
load 5m
custom_buckets_histogram {{schema:-53 sum:5 count:4 custom_values:[5 10] buckets:[1 2 1]}}x10
eval instant at 5m histogram_fraction(5, 10, custom_buckets_histogram)
{} 0.5
eval instant at 5m histogram_quantile(0.5, custom_buckets_histogram)
{} 7.5
eval instant at 5m sum(custom_buckets_histogram)
{} {{schema:-53 sum:5 count:4 custom_values:[5 10] buckets:[1 2 1]}}