George Krajcsovits
5d3f9ee39b
Merge pull request #17904 from linasm/trim_histogram
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promql: Implement </ and >/ operators for trimming native histograms
2026-02-24 17:16:24 +01:00
Linas Medžiūnas
5bd0d00f8c
PromQL: Add experimental histogram_quantiles variadic function ( #17285 )
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Signed-off-by: Linas Medziunas <linas.medziunas@gmail.com >
Signed-off-by: Björn Rabenstein <github@rabenste.in >
Signed-off-by: beorn7 <beorn@grafana.com >
Co-authored-by: Björn Rabenstein <github@rabenste.in >
Co-authored-by: beorn7 <beorn@grafana.com >
2026-02-18 17:32:29 +01:00
Linas Medziunas
38a7befa14
Add test case with join
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Signed-off-by: Linas Medziunas <linas.medziunas@gmail.com >
2026-02-18 15:49:23 +02:00
Linas Medziunas
c753252028
Update/fix test comments
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Signed-off-by: Linas Medziunas <linas.medziunas@gmail.com >
2026-02-18 15:38:27 +02:00
zenador
8937cbd395
promql: info function: support multiple name matchers ( #17968 )
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* Add new test cases for multiple name matchers in PromQL info function
* Fix handling of multiple name matchers in PromQL info function
---------
Signed-off-by: Jeanette Tan <jeanette.tan@grafana.com >
2026-02-13 17:22:58 +01:00
Linas Medziunas
86248a5ceb
Fix for nhcb +Inf bucket
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Signed-off-by: Linas Medziunas <linas.medziunas@gmail.com >
2026-02-13 16:43:25 +02:00
Linas Medziunas
c657e859e3
Fix for nhcb [-Inf; -x) bucket
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Signed-off-by: Linas Medziunas <linas.medziunas@gmail.com >
2026-02-13 16:21:12 +02:00
Linas Medziunas
9a6c170d15
Fix midpoint of NHCB 1st bucket
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Signed-off-by: Linas Medziunas <linas.medziunas@gmail.com >
2026-02-13 15:39:42 +02:00
Linas Medziunas
538ad96136
Don't use extra digits in expected float values
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Signed-off-by: Linas Medziunas <linas.medziunas@gmail.com >
2026-02-13 15:39:27 +02:00
Björn Rabenstein
b84d7dcc56
Merge pull request #18058 from zenador/fix-avg-over-time-nh
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promql: fix avg_over_time for single native histogram
2026-02-11 12:42:27 +01:00
Martin Valiente Ainz
eb5a0e1eed
Refactor parse.go into an instance-based Parser interface
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Signed-off-by: Martin Valiente Ainz <64830185+tinitiuset@users.noreply.github.com >
2026-02-11 11:21:49 +01:00
Martin Valiente Ainz
539936c861
Replace per-component parser options with default instance
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Signed-off-by: Martin Valiente Ainz <64830185+tinitiuset@users.noreply.github.com >
2026-02-11 11:16:04 +01:00
Martin Valiente Ainz
af16f35ad6
PromQL: Refactor parser to use instance configuration instead of global flags
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Parser configuration is now per-engine/API/loader and no longer uses package-level flags, so behavior is consistent and tests don't rely on save/restore of global variables.
Signed-off-by: Martin Valiente Ainz <64830185+tinitiuset@users.noreply.github.com >
2026-02-11 11:16:04 +01:00
Jeanette Tan
9fddb70b8c
promql: Add test case for avg_over_time single histogram fix
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Add regression test for the bug where avg_over_time with a single
histogram sample would produce +Inf count/sum and NaN zero bucket
due to division by zero. The test verifies that both regular
exponential histograms and native histograms with custom buckets
(NHCB) correctly return the histogram unchanged when averaging
a single sample.
Signed-off-by: Jeanette Tan <jeanette.tan@grafana.com >
2026-02-11 05:06:53 +08:00
Linas Medziunas
0615b6af4f
Handle zero_bucket_only case (plus more tests)
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Signed-off-by: Linas Medziunas <linas.medziunas@gmail.com >
2026-02-10 16:02:01 +02:00
Linas Medziunas
5c49187719
Fix NHCB first bucket handling
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Signed-off-by: Linas Medziunas <linas.medziunas@gmail.com >
2026-02-10 14:37:13 +02:00
Linas Medziunas
34f71ba96f
Detect more noop trimmings
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Signed-off-by: Linas Medziunas <linas.medziunas@gmail.com >
2026-02-10 14:32:30 +02:00
Linas Medziunas
b3066144d1
Add test cases trimming a biased zero bucket
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Signed-off-by: Linas Medziunas <linas.medziunas@gmail.com >
2026-02-10 13:42:24 +02:00
Linas Medziunas
16c801d04e
Change interpolation within zero bucket
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Signed-off-by: Linas Medziunas <linas.medziunas@gmail.com >
2026-02-09 17:40:23 +02:00
Sasha
1dcdb07d30
promql: use Kahan summation for Native Histograms ( #15687 )
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As for float samples, Kahan summation is used for the `sum` and `avg` aggregation and for the respective `_over_time` functions.
Kahan summation is not perfect. This commit also adds tests that even Kahan summation cannot reliably pass.
These tests are commented out.
Note that the behavior might be different on other hardware platforms. We have to keep an eye on test failing on other hardware platforms and adjust them accordingly.
Signed-off-by: Aleksandr Smirnov <5targazer@mail.ru >
2026-02-08 00:52:22 +01:00
Linas Medziunas
a3a52004ba
Update native_histograms.test following the feedback
...
Signed-off-by: Linas Medziunas <linas.medziunas@gmail.com >
2026-02-06 13:41:51 +02:00
Julien
eaf47798af
promql: fix panic with @ modifier on empty ranges ( #18020 )
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When using the @ modifier with a timestamp that has no data, several
PromQL range functions were panicking with "index out of range [0]
with length 0". This was introduced by #16797 which changed function
signatures to use concrete types instead of interfaces.
The panic occurred because functions were accessing array elements
(matrixVal[0], vectorVals[0][0]) without checking if the arrays were
empty first.
Fixes #18018
Signed-off-by: Julien Pivotto <291750+roidelapluie@users.noreply.github.com >
2026-02-06 08:30:15 +00:00
Linas Medziunas
35aba0bbde
Compute resulting sum based on surviving buckets
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Signed-off-by: Linas Medziunas <linas.medziunas@gmail.com >
2026-02-02 15:46:32 +02:00
Julien Pivotto
55193c3058
promql: fix smoothed interpolation across counter resets
...
Fix incorrect interpolation when counter resets occur in smoothed range
selector evaluation. Previously, the asymmetric handling of counter
resets (y1=0 on left edge, y2+=y1 on right edge) produced wrong values.
Now uniformly set y1=0 when a counter reset is detected, correctly
modeling the counter as starting from 0 post-reset.
This fixes rate calculations across counter resets. For example,
rate(metric[10s] smoothed) where metric goes from 100 to 10 (a reset)
now correctly computes 0.666... by treating the counter as resetting
to 0 rather than producing inflated values from the old behavior.
Signed-off-by: Julien Pivotto <291750+roidelapluie@users.noreply.github.com >
2026-02-02 11:54:35 +01:00
Linas Medziunas
b69ec3f39c
Only track signs of surviving buckets
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Signed-off-by: Linas Medziunas <linas.medziunas@gmail.com >
2026-01-28 15:11:10 +02:00
Linas Medziunas
e6c07126a6
Midpoint of negative bucket must be negative
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Signed-off-by: Linas Medziunas <linas.medziunas@gmail.com >
2026-01-28 15:07:24 +02:00
beorn7
b812c6457d
promqltest: Document testing for counter reset hints in histograms
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Signed-off-by: beorn7 <beorn@grafana.com >
2026-01-27 14:53:38 +01:00
Linas Medziunas
d0b7fe402f
Edge test cases with Exponential Histogram
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Signed-off-by: Linas Medziunas <linas.medziunas@gmail.com >
2026-01-27 11:17:26 +02:00
Linas Medziunas
001fc1bfea
Handle infinity buckets conservatively
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Signed-off-by: Linas Medziunas <linas.medziunas@gmail.com >
2026-01-27 09:37:27 +02:00
zenador
9a49316c59
promql: info function: fix unit test for ignoring info metrics themselves ( #17911 )
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Signed-off-by: Jeanette Tan <jeanette.tan@grafana.com >
2026-01-22 15:24:41 +01:00
Björn Rabenstein
82fec75982
Merge pull request #17626 from aviralgarg05/fix-promqltest-counter-reset-hint-comparison
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promqltest: Add optional counter reset hint comparison for native histograms
2026-01-22 15:03:20 +01:00
sujal shah
8528d5c446
promql: Implement </ and >/ operators for trimming native histograms.
...
This implements the TRIM_UPPER (</) and TRIM_LOWER (>/) operators
that allow removing observations below or above a threshold from
a histogram. The implementation zeros out buckets outside the desired
range. It also recalculates the sum, including only bucket counts within
the specified threshold range.
Fixes #14651 .
Signed-off-by: sujal shah <sujalshah28092004@gmail.com >
2026-01-22 15:22:47 +02:00
sujal shah
e8bfcfcf1a
promql: Implement </ and >/ operators for trimming native histograms.
...
This implements the TRIM_UPPER (</) and TRIM_LOWER (>/) operators
that allow removing observations below or above a threshold from
a histogram. The implementation zeros out buckets outside the desired
range. It also recalculates the sum, including only bucket counts within
the specified threshold range.
Fixes #14651 .
Signed-off-by: sujal shah <sujalshah28092004@gmail.com >
2026-01-22 15:22:43 +02:00
Bartlomiej Plotka
04a3ef75f2
chore: remove testutil.T which is no longer needed since Go 1.13 ( #17903 )
...
testutil.T was needed before https://go.dev/doc/go1.13#testingpkgtesting
Now it's inconsistent and confusing, so let's kill it.
Signed-off-by: bwplotka <bwplotka@gmail.com >
2026-01-21 13:02:58 +00:00
zenador
e3b6eee437
promql: info function: fix series without identifying labels not being returned ( #17898 )
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* promql: info function: fix series without identifying labels not being returned
---------
Signed-off-by: Jeanette Tan <jeanette.tan@grafana.com >
2026-01-20 16:53:27 +01:00
Julius Volz
05440ffc3b
Add a few fill modifier tests with keyword-like metric names
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Signed-off-by: Julius Volz <julius.volz@gmail.com >
2026-01-16 20:11:38 +01:00
Julius Volz
d3b6e61487
Put binop fill modifiers behind a feature flag
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Signed-off-by: Julius Volz <julius.volz@gmail.com >
2026-01-15 11:18:48 +01:00
Julius Volz
57dd1f18b4
Add fill modifier PromQL tests
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Signed-off-by: Julius Volz <julius.volz@gmail.com >
2026-01-15 07:56:23 +01:00
Julien Pivotto
de0a864b5c
Fuzzing: Move to go fuzzing
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Signed-off-by: Julien Pivotto <291750+roidelapluie@users.noreply.github.com >
2026-01-12 12:59:10 +01:00
Arve Knudsen
16703766f4
promql: fix info() returning empty when filtering by overlapping labels ( #17817 )
...
When filtering by a label that exists on both the input metric and
target_info (e.g., info(metric, {host_name="orbstack"}) where host_name
exists on both), the function incorrectly returned empty results.
The bug was in combineWithInfoVector: when no new labels were added
(because they all overlapped with base metric labels), the code entered
the "no match" filtering block even though an info series WAS matched.
The fix checks len(seenInfoMetrics) == 0 to correctly identify when no
info series matched. If an info series matched (seenInfoMetrics is
non-empty), the series is kept even if no new labels were added.
Fixes #17813
Signed-off-by: Arve Knudsen <arve.knudsen@gmail.com >
2026-01-09 10:04:37 +01:00
Ben Kochie
e14795bbf4
Remove copyright date from headers ( #17785 )
...
Remove copyright dates from various files as part of [PROM-50].
[PROM-50]: https://github.com/prometheus/proposals/blob/main/proposals/0050-remove-copyright-dates.md
Signed-off-by: SuperQ <superq@gmail.com >
2026-01-05 13:46:21 +01:00
Julien
48e6f6a751
Merge pull request #17670 from roidelapluie/roidelapluie/promql-range
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PromQL: duration expression: add range()
2025-12-26 16:31:18 +01:00
aviralgarg05
119e75d78b
promqltest: Properly distinguish explicit counter_reset_hint specification
...
This commit addresses the PR feedback for issue #17615 . The previous
implementation could not distinguish between:
- No counter reset hint specified (meaning "don't care")
- counter_reset_hint:unknown explicitly specified (meaning "verify it's unknown")
Changes:
- Added CounterResetHintSet field to parser.SequenceValue to track
whether counter_reset_hint was explicitly specified in the test file
- Modified buildHistogramFromMap to set this flag when the hint is
present in the descriptor map
- Updated newHistogramSequenceValue helper and histogramsSeries
functions to propagate the flag through histogram series creation
- Updated yacc grammar to use the new helper function
- Modified compareNativeHistogram to accept the flag and only compare
hints when explicitly specified
This allows tests to:
1. Not specify a hint (no comparison, backward compatible)
2. Explicitly specify counter_reset_hint:unknown (verify it's unknown)
3. Explicitly specify counter_reset_hint:gauge/reset/not_reset (verify match)
Fixes #17615
Signed-off-by: aviralgarg05 <gargaviral99@gmail.com >
2025-12-19 23:32:08 +05:30
Julien Pivotto
37b97a0200
PromQL: Fix collision in unary negation with non-overlapping series.
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Signed-off-by: Julien Pivotto <291750+roidelapluie@users.noreply.github.com >
2025-12-17 11:03:55 +01:00
Julien Pivotto
b336889d8f
PromQL: Fix collision in label_join and label_replace with non-overlapping series.
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Signed-off-by: Julien Pivotto <291750+roidelapluie@users.noreply.github.com >
2025-12-16 16:58:53 +01:00
Julien Pivotto
6efbb873c7
promql: Fix collision error with delayed name removal for non-overlapping series
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Signed-off-by: Julien Pivotto <291750+roidelapluie@users.noreply.github.com >
2025-12-12 14:50:29 +01:00
Julien Pivotto
d0b122a711
PromQL: duration expression: add range()
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Signed-off-by: Julien Pivotto <291750+roidelapluie@users.noreply.github.com >
2025-12-10 16:27:18 +01:00
Julius Volz
4cad87cae8
PromQL: Fix insufficient cardinality checking for filter ops
...
Generally, binary operations between two vectors fail if there is a many-to-one
or one-to-many matching situation between series within a match group and no
`group_left()` or `group_right()` modifier is present. For filter ops this is
also generally the case, but there can be situations where multiple series on
one side can match a single series on the other side, but only 0 or 1 of those
multiple series remains after the filter operator has been applied. In this
case, the PromQL engine does not produce a matching error, since it only tracks
series matching for those series that survive the filtering. IMO this is
incorrect behavior (which can also erratically make a query sometimes fail and
sometimes succeed, depending on current sample values), and we should always
produce an error if there is a match error prior to applying the filter op.
This PR ensures that we do the cardinality / match tracking independently of
the result of the filter operation.
Signed-off-by: Julius Volz <julius.volz@gmail.com >
2025-12-10 11:31:46 +01:00
Julien
0279e14d4a
Merge pull request #17636 from roidelapluie/roidelapluie/starttime
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Add start_timestamp field for unit tests
2025-12-04 10:47:24 +01:00
Julien Pivotto
1a853e23db
Add start_timestamp field for unit tests.
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This commit adds support for configuring a custom start timestamp
for Prometheus unit tests, allowing tests to use realistic timestamps
instead of starting at Unix epoch 0.
Signed-off-by: Julien Pivotto <291750+roidelapluie@users.noreply.github.com >
2025-12-03 11:20:23 +01:00
