Aliaksandr Valialkin
a102fca4ac
app/vmselect/promql: add limit_offset(limit, offset, q) function, which can be used for paging over big number of time series
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Updates https://github.com/VictoriaMetrics/VictoriaMetrics/issues/1778
2021-11-03 16:03:10 +02:00
Aliaksandr Valialkin
43bf0333eb
app/vmselect/promql: add label_graphite_group() function for extracting groups from Graphite metric names
2021-11-03 13:20:34 +02:00
Aliaksandr Valialkin
48c3668b3d
app/vmselect/promql: add atan2 binary operator, which is going to be added in Prometheus 2.31
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See https://github.com/prometheus/prometheus/pull/9248
2021-10-11 21:17:23 +03:00
Aliaksandr Valialkin
b3d28f3872
app/vmselect/promql: add missing trigonometric functions, which are going to be added in Prometheus 2.31
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See https://github.com/prometheus/prometheus/issues/9233
2021-10-11 21:17:21 +03:00
Aliaksandr Valialkin
f1e1d20ac4
app/vmselect/promql: consistently return the same set of time series from limitk() function
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This is the expected behaviour by most users.
2021-10-08 19:55:29 +03:00
Aliaksandr Valialkin
7e6ec0bbe9
app/vmselect/promql: return back the behaviour for deriv() function when the lookbehind window doesnt contain enough points
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It is expected that the `deriv(m[d])` returns non-empty value if the lookbehind window `d`
contains less than 2 samples in the same way as `rate()` does.
This is a follow-up after 3e084be06b
2021-10-07 12:55:58 +03:00
Roman Khavronenko
0a8804d6aa
app/vmselect: make predict_linear and deriv compatible with Prometheus ( #1681 )
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Previously, `predict_linear` returned slightly different results comparing
to Prometheus. The change makes linear regression algorithm compatible
with Prometheus.
`deriv` was excluded from the list of functions which can adjust the time
window for the same reasons.
2021-10-07 12:55:56 +03:00
Aliaksandr Valialkin
ec6eb03d65
app/vmselect/promql: add topk_last and bottomk_last functions
2021-09-30 13:23:27 +03:00
Roman Khavronenko
95ddfda894
app/vmselect: fix binary comparison func ( #1667 )
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The fix makes the binary comparison func to check for NaNs
before executing the actual comparison. This prevents VM
to return values for non-existing samples for expressions
which contain bool comparisons. Please see added test
for example.
2021-09-30 13:04:10 +03:00
Roman Khavronenko
57eb5ef194
app/vmselect: fix testRowsEqual func NaN checks ( #1666 )
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It appeared, that `testRowsEqual` NaN comparison was incorrect.
The fix caused some tests to fail. Please see the change and
tests updated.
Signed-off-by: hagen1778 <roman@victoriametrics.com>
2021-09-30 13:04:08 +03:00
Aliaksandr Valialkin
4b3951fd86
app/vmselect/promql: add rollup_scrape_interval(m[d]) function
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It calculates the min, max and avg scrape intervals for m over the given lookbehind window d
2021-09-27 19:21:55 +03:00
Roman Khavronenko
6061464d80
app/vmselect: quantile func compatiblity with Prometheus ( #1646 )
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* app/vmselect: `quantile` func compatiblity with Prometheus
The `quantile` func was previously calculated by https://github.com/valyala/histogram
package. The result of such calculation was always the closest real value to
requested quantile. While in Prometheus implementation interpolation is used.
Such difference may result into discrepancy in output between Prometheus and
VictoriaMetrics.
This commit adds a Prometheus-like `quantile` function. It also used by other
functions which depend on it, such as `quantiles`, `quantile_over_time`, `median` etc.
https://github.com/VictoriaMetrics/VictoriaMetrics/issues/1625
Signed-off-by: hagen1778 <roman@victoriametrics.com>
* app/vmselect: `quantile` review fixes
* quantile functions were split into multiple to provide
different API for already sorted data;
* float64sPool is used for reducing allocations. Items in pool may have
different sizes, but defining a new pool was complicates due to name collisions;
Signed-off-by: hagen1778 <roman@victoriametrics.com>
2021-09-27 18:57:02 +03:00
Aliaksandr Valialkin
a746fe8778
app/vmselect/promql: follow-up after 57b3320478
2021-09-24 01:25:04 +03:00
Roman Khavronenko
7ac0559d4f
app/vmselect: make sorting for query result similar to Prometheus ( #1647 )
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* app/vmselect: make sorting for query result similar to Prometheus
Updated sorting allows to get the order of series in result similar or equal
to what Prometheus returns.
The change is needed for compatibility reasons.
* Update app/vmselect/promql/exec_test.go
Co-authored-by: Aliaksandr Valialkin <valyala@victoriametrics.com>
2021-09-24 01:25:03 +03:00
Aliaksandr Valialkin
76c650bbda
app/vmselect/promql: add quantiles_over_time("phiLabel", phi1, ..., phiN, m[d]) function for calculating multiple quantiles at once
2021-09-17 23:35:04 +03:00
Aliaksandr Valialkin
81d24045c2
app/vmselect/promql: add histogram_quantiles("phiLabel", phi1, ..., phiN, buckets) function
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This function calculates multiple quantiles over the given buckets at once
Updates https://github.com/VictoriaMetrics/VictoriaMetrics/issues/1573
2021-09-17 13:39:06 +03:00
Aliaksandr Valialkin
3f8de4f82f
app/vmselect/promql: add mad(q) and outliers_mad(tolerance, q) functions to MetricsQL
2021-09-16 13:35:38 +03:00
Aliaksandr Valialkin
19516aedb5
app/vmselect/promql: use Prometheus-compatible label value formatting for count_values function
2021-09-13 13:48:18 +03:00
Aliaksandr Valialkin
9b07cb2988
app/vmselect/promql: keep metric name in rollup_candlestick results, since they don't change the original series meaning
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Updates https://github.com/VictoriaMetrics/VictoriaMetrics/issues/1600
2021-09-09 19:24:10 +03:00
Aliaksandr Valialkin
39bb6bdd79
app/vmselect/promql: add quantile("phiLabel", phi1, ..., phiN, q) aggregate function to MetricsQL
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See https://github.com/VictoriaMetrics/VictoriaMetrics/issues/1573
2021-08-27 18:40:25 +03:00
Aliaksandr Valialkin
40b06e84f8
app/vmselect/promql: rename sign() function to sgn() in order to be consistent with Prometheus
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See https://github.com/prometheus/prometheus/pull/8457 for details.
2021-08-23 11:46:29 +03:00
Aliaksandr Valialkin
49886ecbc8
app/vmselect/promql: add bitmap_and(), bitmap_or() and bitmap_xor() functions to MetricsQL
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Updates https://github.com/VictoriaMetrics/VictoriaMetrics/issues/1541
2021-08-17 13:22:15 +03:00
Aliaksandr Valialkin
60cfa5f100
app/vmselect/promql: add present_over_time(m[d]) function, which will be available starting from Prometheus 2.29.0
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See https://github.com/prometheus/prometheus/releases/tag/v2.29.0-rc.0 and https://github.com/prometheus/prometheus/pull/9097
2021-08-03 12:21:53 +03:00
Aliaksandr Valialkin
b047feeb8b
app/vmselect/promql: properly handle (a op b) default N if (a op b) returns NaN series
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The result should be a series with `N` values and `a op b` labels. Previously such series has been removed from the result.
2021-07-16 01:44:24 +03:00
Aliaksandr Valialkin
9add9d86a6
app/vmselect/promql: duration handling improvements in MetricsQL queries
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- Support durations anywhere in MetricsQL queries. E.g. sum_over_time(m[1h])/1h is equivalent to sum_over_time(m[1h])/3600
- Support durations without suffix. E.g. rate(m[300]) is equivalent to rate(m[5m])
2021-07-12 17:19:32 +03:00
Aliaksandr Valialkin
180829b8c2
app/vmselect/promql: add timezone_offset(tz) function
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Updates https://github.com/VictoriaMetrics/VictoriaMetrics/issues/1306
2021-05-20 11:54:06 +03:00
Aliaksandr Valialkin
e48fd5776b
app/vmselect/promql: fix tests after d3fa0ccabd
2021-04-08 00:17:40 +03:00
Aliaksandr Valialkin
4aa59cae7c
app/vmselect/promql: do not delete dst_label if src_label is empty in label_copy(q, src_label, dst_label) and label_move(q, src_label, dst_label)
2021-04-03 22:06:50 +03:00
Aliaksandr Valialkin
b9469de410
app/vmselect/promql: add ability to set label value additionally to label name for the remaining sum of time series returned from topk_* and bottomk_* functions in the form: topk_min(N, m, "label=value")
2021-04-02 23:56:30 +03:00
Aliaksandr Valialkin
f54ece438d
app/vmselect/promql: do not crash if histogram_over_time() function name contains uppercase letters such as Histogram_over_time()
2021-03-16 12:23:55 +02:00
Aliaksandr Valialkin
8844b38745
app/vmselect/promql: fix tests after 2dae0a2c47
2021-03-15 20:20:27 +02:00
Nikolay
28e450cd7c
duplicate timeseries fix for prometheus_buckets function ( #1119 )
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* try fix for prometheus_buckets
* merge possible end of the bucket collision
2021-03-09 12:54:21 +02:00
Aliaksandr Valialkin
5277507932
app/vmselect/promql: add histogram_avg(), histogram_stddev() and histogram_stdvar() functions to MetricsQL
2021-03-04 14:12:52 +02:00
Aliaksandr Valialkin
e38ca28d99
app/vmselect/promql: increase accuracy for buckets_limit() function for small limits by skipping the first and the last buckets during merge
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The first and the last buckets are usually `[0 ... leMin]` and `(leMax ... +Inf)`. If they are merged with adjancent buckets,
then the resulting accuracy can suffer.
2021-02-26 22:56:04 +02:00
Aliaksandr Valialkin
0144b164c7
app/vmselect: add sign(q) and clamp(q, min, max) functions, which will be added in the upcoming Prometheus release
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See https://twitter.com/roidelapluie/status/1363428376162295811
The `last_over_time(m[d])` function already exists in MetricsQL.
2021-02-24 17:26:27 +02:00
Aliaksandr Valialkin
d16effc29e
app/vmselect/promql: properly calculate histogram_quantile() over zero buckets and only a single non-zero le="+Inf"` bucket like Prometheus does
2021-02-24 00:41:30 +02:00
Aliaksandr Valialkin
5dbe88a1c6
app/vmselect/promql: add increase_pure() function to MetricsQL
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Updates https://github.com/VictoriaMetrics/VictoriaMetrics/issues/962
2021-02-22 19:15:31 +02:00
Aliaksandr Valialkin
46e98ed490
vendor: update github.com/VictoriaMetrics/metrics from v1.13.1 to v1.14.0
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The new version switches from log-linear histograms to log-based histograms,
which provide up to 3.6 times better accuracy.
2021-02-15 15:11:15 +02:00
Aliaksandr Valialkin
c5bdab5a4c
app/vmselect/promql: add ability to pass multiple labels to sort_by_label and sort_by_label_desc functions
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See https://github.com/VictoriaMetrics/VictoriaMetrics/issues/992
2021-01-13 12:43:47 +02:00
Aliaksandr Valialkin
262cf81757
app/vmselect: properly parse negative combined offsets such as -1h2m3s
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Previously such offsets were parsed as `-1h + 2m + 3s`. Now they are parsed as `-(1h + 2m + 3s)`.
2020-12-19 01:25:03 +02:00
Aliaksandr Valialkin
d242c2f2bd
app/vmselect/promql: add count_eq_over_time(m[d], N) and count_ne_over_time(m[d], N) for calculating the number of samples in m over d that are equal / not equal to N
2020-12-05 12:31:01 +02:00
Aliaksandr Valialkin
8cf76d8747
app/vmselect/promql: add label_uppercase(q, label1, ... labelN) and label_lowercase(q, label1, ... labelN) functions
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Updates https://github.com/VictoriaMetrics/VictoriaMetrics/issues/936
2020-12-03 21:46:18 +02:00
Aliaksandr Valialkin
11bbb3552d
app/vmselect/promql: make fmt
2020-12-02 21:34:15 +02:00
Aliaksandr Valialkin
9e98a8f3d3
app/vmselect/promql: return nan from minute(m) when m equals to nan
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This aligns VictoriaMetrics behaviour with Prometheus behaviour.
The issue has been spotted in https://promlabs.com/promql-compliance-test-results/2020-12-01/victoriametrics/
2020-12-02 20:16:40 +02:00
Aliaksandr Valialkin
4ef7158e89
app/vmselect/promql: return nan from a >bool b if a is nan in the same way as Prometheus does
2020-12-02 00:28:56 +02:00
Aliaksandr Valialkin
4f2c5877db
app/vmselect: add -search.treatDotsAsIsInRegexps command-line flag for automatic escaping of dots in regexp label filters
2020-11-11 12:40:28 +02:00
Aliaksandr Valialkin
c4464594b7
app/vmselect/promql: allow passing optional third argument to topk_* and bottomk_* functions in order to obtain sum of time series outside top/bottom K
2020-10-20 20:09:55 +03:00
Aliaksandr Valialkin
b9a4601c97
app/vmselect/promql: return a single time series at max from absent() function like Prometheus does
2020-10-13 15:56:10 +03:00
Aliaksandr Valialkin
217c192c88
app/vmselect/promql: improve time series staleness detection
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This should prevent from double counting for time series at the time when it changes label.
The most common case is in K8S, which changes pod uid label with each new deployment.
Updates https://github.com/VictoriaMetrics/VictoriaMetrics/issues/748
2020-10-13 12:20:08 +03:00
Aliaksandr Valialkin
79d70480b7
Revert "app/vmselect/promql: remove metric name after applying clamp_min and clamp_max functions in order to be consistent with Prometheus"
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This reverts commit bb61a4769bhttps://github.com/VictoriaMetrics/VictoriaMetrics/issues/674
2020-10-12 11:48:38 +03:00
