217 Commits

Author	SHA1	Message	Date
Dmytro Kozlov	463ea6897b	vmselect/promql: enable search.maxPointsSubqueryPerTimeseries for sub-queries (#2963) ... * vmselect/promql: enable search.maxPointsPerTimeSeriesSubquery for sub-queries * vmselect/promql: cleanup * vmselect/promql: rename config flag * vmselect/promql: add tests * vmselect/promql: use test object instead of log * vmselect/promql: fix posible panic is subquery has more points. add description * vmselect/promql: update tests descriptions * vmselect/promql: update doInternal validation * vmselect/promql: fix linter * vmselect/promql: fix linter * vmselect/promql: update documentation and release notes * wip - Properly apply -search.maxPointsSubqueryPerTimeseries limit to subqueries. Previously the -search.maxPointsPerTimeseries limit was unexpectedly applied to subqueries if it was smaller than the -search.maxPointsSubqueryPerTimeseries . - Clarify docs for -search.maxPointsSubqueryPerTimeseries command-line flag . - Document -search.maxPointsPerTimeseries and -search.maxPointsSubqueryPerTimeseries flags at https://docs.victoriametrics.com/#resource-usage-limits . - Update docs/CHANGELOG.md . Updates https://github.com/VictoriaMetrics/VictoriaMetrics/issues/2922 Co-authored-by: Aliaksandr Valialkin <valyala@victoriametrics.com>	2022-08-24 15:25:18 +03:00
Dmytro Kozlov	a927814e7b	vmselect/promql: add tests for vmrangeBucketsToLE (#2907) ... * vmselect/promql: add tests for vmrangeBucketsToLE * vmselect/promql: cleanup * vmselect/promql: cleanup * vmselect/promql: fix panic tests want result * vmselect/promql: cleanup * vmselect/promql: update test name * vmselect/promql: fix linter error * vmselect/promql: refactor testcases * vmselect/promql: cleanup * vmselect/promql: remove unused reassign to workers, fix typo * wip * wip * wip Co-authored-by: Aliaksandr Valialkin <valyala@victoriametrics.com>	2022-07-26 20:42:41 +03:00
Aliaksandr Valialkin	b5da47bfaf	app/vmselect/promql: properly return q1 series from q1 ifnot q2 when q2 returns nothing	2022-07-18 14:24:54 +03:00
Roman Khavronenko	e1a41cfab5	metricsql: properly evaluate timezone_offset over time interval (#2842) ... * metricsql: properly evaluate `timezone_offset` over time interval https://github.com/VictoriaMetrics/VictoriaMetrics/issues/2771 Signed-off-by: hagen1778 <roman@victoriametrics.com> * Update docs/CHANGELOG.md Co-authored-by: Aliaksandr Valialkin <valyala@victoriametrics.com>	2022-07-08 14:03:56 +03:00
Aliaksandr Valialkin	f3ece83e67	app/vmselect/promql: properly calculate histogram_quantile over unexpected le buckets ... See https://github.com/VictoriaMetrics/VictoriaMetrics/issues/2819	2022-07-05 13:19:24 +03:00
Aliaksandr Valialkin	84e373e5c7	app/vmselect/promql: properly handle partial counter resets in rate(), irate(), increase() and remove_resets() functions	2022-06-30 22:39:38 +03:00
Aliaksandr Valialkin	41958ed5dd	all: add initial support for query tracing ... See https://docs.victoriametrics.com/Single-server-VictoriaMetrics.html#query-tracing Updates https://github.com/VictoriaMetrics/VictoriaMetrics/issues/1403	2022-06-01 02:29:23 +03:00
Aliaksandr Valialkin	a7f18f8cb2	app/vmselect/promql: do not return values from label_value() if the original time series has no values at the selected timestamps	2022-05-09 17:57:39 +03:00
Aliaksandr Valialkin	cce1b6d7f9	app/vmselect/promql: add tlast_change_over_time(m[d]) function, which returns the timestamp for the last change of m on the given lookbehind window d	2022-04-27 10:59:03 +03:00
Aliaksandr Valialkin	25fe83577d	app/vmselect/promql: properly handle scalar default vector, scalar if vector and scalar ifnot vector queries ... Previously `vector` time series could be unexpectedly returned from such queries	2022-04-21 15:34:36 +03:00
Aliaksandr Valialkin	d1a9fac894	app/vmselect/promql: fix comparison to nan ... The comparison to nan has been broken in d335cc886c Updates https://github.com/VictoriaMetrics/VictoriaMetrics/issues/150	2022-04-21 14:55:37 +03:00
Aliaksandr Valialkin	de892239a9	app/vmselect/promql: add drop_common_labels() function	2022-04-21 14:20:20 +03:00
Aliaksandr Valialkin	d335cc886c	app/vmselect/promql: fix duplicate time series error on joins against time series filtered by values ... This should prevent from `duplicate time series` errors when executing the following query: kube_pod_container_resource_requests{resource="cpu"} * on (namespace,pod) group_left() (kube_pod_status_phase{phase=~"Pending|Running"}==1) where `kube_pod_status_phase{phase=~"Pending|Running"}==1` filters out diplicate time series	2022-04-20 22:18:44 +03:00
Aliaksandr Valialkin	6e364e19ef	app/vmselect: add fine-grained limits for the number of returned/scanned time series for various APIs	2022-03-26 11:29:49 +02:00
Aliaksandr Valialkin	b1f94f7f0e	app/vmselect/promql: return at most one time series from absent_over_time() in the same way as Prometheus does ... See https://github.com/VictoriaMetrics/VictoriaMetrics/issues/2130	2022-02-12 15:45:09 +02:00
Aliaksandr Valialkin	dc7b63a793	app/vmselect/promql: properly keep metric names when optimized path is used for aggregate function calculations ... For example, `sum(rate(...) keep_metric_names) by (__name__)` didn't leave the original metric name because of this issue. This is a follup-up for 1bdc71d917 Udates https://github.com/VictoriaMetrics/VictoriaMetrics/issues/949	2022-01-17 15:30:30 +02:00
Aliaksandr Valialkin	1bdc71d917	app/vmselect/promql: implement keep_metric_names modifier for transform and rollup functions ... Updates https://github.com/VictoriaMetrics/VictoriaMetrics/issues/949	2022-01-14 04:14:59 +02:00
Aliaksandr Valialkin	c883c15878	app/vmselect/promql: add support for @ modifier ... Add support for `@` modifier in MetricsQL according to https://prometheus.io/docs/prometheus/latest/querying/basics/#modifier Extend the support with the following features: * Allow using `@` modifier everywhere in the query. For example, `sum(foo) @ end()` * Allow using arbitrary expression as `@` modifier. For example, `foo @ (end() - 1h)` returns `foo` value at `end - 1 hour` timestamp on the selected time range `[start ... end]` Updates https://github.com/VictoriaMetrics/VictoriaMetrics/issues/1348	2022-01-13 22:12:06 +02:00
Aliaksandr Valialkin	9469696e46	app/vmselect/promql: fix limit_offset() test ... The test has been broken in addae7fc6a	2022-01-13 16:59:28 +02:00
Aliaksandr Valialkin	974d9c0eee	app/vmselect/promql: follow-up after 177e345d8a ... * Document changes_prometheus(), increase_prometheus() and delta_prometheus() functions. * Simplify their implementation * Mention these functions in docs/CHANGELOG.md	2021-12-20 13:19:44 +02:00
Aliaksandr Valialkin	5efe377a26	app/vmselect/promql: add timestamp_with_name(m[d]) function ... This function works the same as `timestamp()`, but doesn't remove source time series names. See https://github.com/VictoriaMetrics/VictoriaMetrics/issues/949#issuecomment-995222388	2021-12-15 23:37:07 +02:00
Aliaksandr Valialkin	d1f8915ed1	app/vmselect/promql: preserve the order of time series passed to limit_offset() function ... Previously time series passed to `limit_offset()` were shuffled according to hash for their labels. This was unexpected behaviour for most users. See https://github.com/VictoriaMetrics/VictoriaMetrics/issues/1920 and https://github.com/VictoriaMetrics/VictoriaMetrics/issues/951	2021-12-12 18:04:58 +02:00
Aliaksandr Valialkin	9bee043ff2	app/vmselect/promql: consistently return zero from deriv(const)	2021-11-17 18:02:05 +02:00
Aliaksandr Valialkin	b900560b83	app/vmselect/promql: add now() function, which returns the current timestamp as a floating-point value in seconds	2021-11-17 16:35:30 +02:00
Aliaksandr Valialkin	3419ac1d36	app/vmselect/promql: add duration_over_time(m[d], max_interval) function ... This function calculates the actual lifetime of the time series on the given lookbehdind window `d` Updates https://github.com/VictoriaMetrics/VictoriaMetrics/issues/1780	2021-11-08 13:14:09 +02:00
Aliaksandr Valialkin	27044b84d2	app/vmselect/promql: add limit_offset(limit, offset, q) function, which can be used for paging over big number of time series ... Updates https://github.com/VictoriaMetrics/VictoriaMetrics/issues/1778	2021-11-03 16:02:27 +02:00
Aliaksandr Valialkin	43a58bd618	app/vmselect/promql: add label_graphite_group() function for extracting groups from Graphite metric names	2021-11-03 13:19:08 +02:00
Aliaksandr Valialkin	a5001b9c20	app/vmselect/promql: add atan2 binary operator, which is going to be added in Prometheus 2.31 ... See https://github.com/prometheus/prometheus/pull/9248	2021-10-11 21:15:53 +03:00
Aliaksandr Valialkin	81c6720392	app/vmselect/promql: add missing trigonometric functions, which are going to be added in Prometheus 2.31 ... See https://github.com/prometheus/prometheus/issues/9233	2021-10-11 21:01:33 +03:00
Aliaksandr Valialkin	92b92d4d2c	app/vmselect/promql: consistently return the same set of time series from limitk() function ... This is the expected behaviour by most users.	2021-10-08 19:53:52 +03:00
Aliaksandr Valialkin	c45210a6f9	app/vmselect/promql: return back the behaviour for deriv() function when the lookbehind window doesnt contain enough points ... 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 12:52:27 +03:00
Roman Khavronenko	3e084be06b	app/vmselect: make predict_linear and deriv compatible with Prometheus (#1681) ... 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 12:50:49 +03:00
Aliaksandr Valialkin	0e3de5a0cc	app/vmselect/promql: add topk_last and bottomk_last functions	2021-09-30 13:22:52 +03:00
Roman Khavronenko	a31407006c	app/vmselect: fix binary comparison func (#1667) ... 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 12:24:17 +03:00
Roman Khavronenko	344490d89b	app/vmselect: fix testRowsEqual func NaN checks (#1666) ... 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 12:08:47 +03:00
Aliaksandr Valialkin	2efe0acfc9	app/vmselect/promql: add rollup_scrape_interval(m[d]) function ... It calculates the min, max and avg scrape intervals for m over the given lookbehind window d	2021-09-27 19:21:24 +03:00
Roman Khavronenko	526dd93b32	app/vmselect: quantile func compatiblity with Prometheus (#1646) ... * 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 18:02:41 +03:00
Aliaksandr Valialkin	8ed95e82c6	app/vmselect/promql: follow-up after 57b3320478	2021-09-24 01:24:18 +03:00
Roman Khavronenko	57b3320478	app/vmselect: make sorting for query result similar to Prometheus (#1647) ... * 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 01:03:12 +03:00
Aliaksandr Valialkin	9a3d0c43b5	app/vmselect/promql: add quantiles_over_time("phiLabel", phi1, ..., phiN, m[d]) function for calculating multiple quantiles at once	2021-09-17 23:35:10 +03:00
Aliaksandr Valialkin	2951dd0a57	app/vmselect/promql: add histogram_quantiles("phiLabel", phi1, ..., phiN, buckets) function ... This function calculates multiple quantiles over the given buckets at once Updates https://github.com/VictoriaMetrics/VictoriaMetrics/issues/1573	2021-09-17 13:32:39 +03:00
Aliaksandr Valialkin	e60dfc96ff	app/vmselect/promql: add mad(q) and outliers_mad(tolerance, q) functions to MetricsQL	2021-09-16 13:33:53 +03:00
Aliaksandr Valialkin	d1a16e0891	app/vmselect/promql: use Prometheus-compatible label value formatting for count_values function	2021-09-13 13:48:06 +03:00
Aliaksandr Valialkin	ea943911bc	app/vmselect/promql: keep metric name in rollup_candlestick results, since they don't change the original series meaning ... Updates https://github.com/VictoriaMetrics/VictoriaMetrics/issues/1600	2021-09-09 19:21:18 +03:00
Aliaksandr Valialkin	5ea689d61b	app/vmselect/promql: add quantile("phiLabel", phi1, ..., phiN, q) aggregate function to MetricsQL ... See https://github.com/VictoriaMetrics/VictoriaMetrics/issues/1573	2021-08-27 18:37:20 +03:00
Aliaksandr Valialkin	0078486ea7	app/vmselect/promql: rename sign() function to sgn() in order to be consistent with Prometheus ... See https://github.com/prometheus/prometheus/pull/8457 for details.	2021-08-23 11:45:51 +03:00
Aliaksandr Valialkin	db1e62495b	app/vmselect/promql: add bitmap_and(), bitmap_or() and bitmap_xor() functions to MetricsQL ... Updates https://github.com/VictoriaMetrics/VictoriaMetrics/issues/1541	2021-08-17 13:21:21 +03:00
Aliaksandr Valialkin	e92fde7945	app/vmselect/promql: add present_over_time(m[d]) function, which will be available starting from Prometheus 2.29.0 ... See https://github.com/prometheus/prometheus/releases/tag/v2.29.0-rc.0 and https://github.com/prometheus/prometheus/pull/9097	2021-08-03 16:11:49 +03:00
Aliaksandr Valialkin	05672ffc32	app/vmselect/promql: properly handle (a op b) default N if (a op b) returns NaN series ... 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 01:44:58 +03:00
Aliaksandr Valialkin	a925d5a3e1	app/vmselect/promql: duration handling improvements in MetricsQL queries ... - 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 17:16:41 +03:00
Aliaksandr Valialkin	0842bb9294	app/vmselect/promql: add timezone_offset(tz) function ... Updates https://github.com/VictoriaMetrics/VictoriaMetrics/issues/1306	2021-05-20 11:53:09 +03:00
Aliaksandr Valialkin	544821b719	app/vmselect/promql: fix tests after d3fa0ccabd	2021-04-08 00:18:01 +03:00
Aliaksandr Valialkin	7a0b964e8d	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 22:05:06 +03:00
Aliaksandr Valialkin	3055ab0115	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 23:55:54 +03:00
Aliaksandr Valialkin	f0a4157f89	app/vmselect/promql: do not crash if histogram_over_time() function name contains uppercase letters such as Histogram_over_time()	2021-03-16 12:24:21 +02:00
Aliaksandr Valialkin	82aab87446	app/vmselect/promql: fix tests after 2dae0a2c47	2021-03-15 20:18:59 +02:00
Nikolay	433fff0006	duplicate timeseries fix for prometheus_buckets function (#1119) ... * try fix for prometheus_buckets * merge possible end of the bucket collision	2021-03-09 12:26:23 +02:00
Aliaksandr Valialkin	a14053ffa0	app/vmselect/promql: add histogram_avg(), histogram_stddev() and histogram_stdvar() functions to MetricsQL	2021-03-04 14:12:07 +02:00
Aliaksandr Valialkin	d86e9b49c4	app/vmselect/promql: increase accuracy for buckets_limit() function for small limits by skipping the first and the last buckets during merge ... 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 22:56:36 +02:00
Aliaksandr Valialkin	98854e5f2b	app/vmselect: add sign(q) and clamp(q, min, max) functions, which will be added in the upcoming Prometheus release ... See https://twitter.com/roidelapluie/status/1363428376162295811 The `last_over_time(m[d])` function already exists in MetricsQL.	2021-02-24 17:24:56 +02:00
Aliaksandr Valialkin	f4135b0d14	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 00:42:22 +02:00
Aliaksandr Valialkin	fa03e0d210	app/vmselect/promql: add increase_pure() function to MetricsQL ... Updates https://github.com/VictoriaMetrics/VictoriaMetrics/issues/962	2021-02-22 19:14:15 +02:00
Aliaksandr Valialkin	4e39bf148c	vendor: update github.com/VictoriaMetrics/metrics from v1.13.1 to v1.14.0 ... The new version switches from log-linear histograms to log-based histograms, which provide up to 3.6 times better accuracy.	2021-02-15 15:12:29 +02:00
Aliaksandr Valialkin	1051d8aa2d	app/vmselect/promql: add ability to pass multiple labels to sort_by_label and sort_by_label_desc functions ... See https://github.com/VictoriaMetrics/VictoriaMetrics/issues/992	2021-01-13 12:44:51 +02:00
Aliaksandr Valialkin	88ac4dfc07	app/vmselect: properly parse negative combined offsets such as -1h2m3s ... Previously such offsets were parsed as `-1h + 2m + 3s`. Now they are parsed as `-(1h + 2m + 3s)`.	2020-12-19 01:23:46 +02:00
Aliaksandr Valialkin	e2e8ef86d9	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 12:30:46 +02:00
Aliaksandr Valialkin	66379cc69f	app/vmselect/promql: add label_uppercase(q, label1, ... labelN) and label_lowercase(q, label1, ... labelN) functions ... Updates https://github.com/VictoriaMetrics/VictoriaMetrics/issues/936	2020-12-03 21:47:36 +02:00
Aliaksandr Valialkin	44a34a0f5f	app/vmselect/promql: make fmt	2020-12-02 21:33:35 +02:00
Aliaksandr Valialkin	1982505c2b	app/vmselect/promql: return nan from minute(m) when m equals to nan ... 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 20:16:58 +02:00
Aliaksandr Valialkin	700bda8e2e	app/vmselect/promql: return nan from a >bool b if a is nan in the same way as Prometheus does	2020-12-02 00:28:26 +02:00
Aliaksandr Valialkin	348edd92fe	app/vmselect: add -search.treatDotsAsIsInRegexps command-line flag for automatic escaping of dots in regexp label filters	2020-11-11 12:39:07 +02:00
Aliaksandr Valialkin	c539494b36	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	2020-11-01 23:35:06 +02:00
Aliaksandr Valialkin	a2b9476897	app/vmselect/promql: return a single time series at max from absent() function like Prometheus does	2020-10-13 15:56:04 +03:00
Aliaksandr Valialkin	9aa3b65766	app/vmselect/promql: improve time series staleness detection ... 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 12:19:57 +03:00
Aliaksandr Valialkin	a94825b169	Revert "app/vmselect/promql: remove metric name after applying clamp_min and clamp_max functions in order to be consistent with Prometheus" ... This reverts commit bb61a4769b. Reason for revert: the previous behavior for VictoriaMetrics is easier to understand and use by users - functions, which don't change the meaning of the time series shouldn't drop metric name. Now the following functions do not drop metric name: * clamp_min * clamp_max Updates https://github.com/VictoriaMetrics/VictoriaMetrics/issues/674	2020-10-12 11:38:27 +03:00
Aliaksandr Valialkin	f7d28bddbf	Revert "app/vmselect/promql: remove metric name from results of certain rollup functions in order to be consistent with Prometheus" ... This reverts commit e5202a4eae. Reason for revert: the previous behavior for VictoriaMetrics is easier to understand and use by users - functions, which don't change the meaning of the time series shouldn't drop metric name. Now the following functions do not drop metric name: * max_over_time * min_over_time * avg_over_time * quantile_over_time * geomean_over_time * mode_over_time * holt_winters * predict_linear Updates https://github.com/VictoriaMetrics/VictoriaMetrics/issues/674	2020-10-12 11:35:18 +03:00
Aliaksandr Valialkin	0e533d1a9c	app/vmselect/promql: support composite durations like Prometheus 2.21 does ... The following durations are supported now: `1h5m35s` or `1s543ms` See https://github.com/prometheus/prometheus/releases/tag/v2.21.0 and https://github.com/prometheus/prometheus/pull/7713	2020-09-11 23:39:13 +03:00
Aliaksandr Valialkin	f0005c3007	app/vmselect: move Deadline from netstorage to searchutils ... This removes dependency on netstorage from searchutils.	2020-09-11 13:27:13 +03:00
Aliaksandr Valialkin	8e85b56737	app/vmselect/promql: adjust integrate() calculations to be more similar to calculations from InfluxDB ... Updates https://github.com/VictoriaMetrics/VictoriaMetrics/issues/701	2020-09-08 14:23:39 +03:00
Aliaksandr Valialkin	c0343a661b	app/vmselect/promql: increase floating point calculations accuracy by dividing by 1e3 instead of multiplying by 1e-3	2020-09-08 14:00:47 +03:00
Aliaksandr Valialkin	f4e7e5fb90	app/vmselect/promql: add count_le_over_time(m[d], le) and count_gt_over_time(m[d], gt) functions ... These functions returns the number of raw samples that don't exceed `le` or are bigger than `gt`. These functions are complement to already existing `share_le_over_time(m[d], le)` and `share_gt_over_time(m[d], gt)`.	2020-09-03 15:29:10 +03:00
Aliaksandr Valialkin	e706e59d49	app/vmselect: unconditionally align time range boundaries to step for subqueries as Prometheus does	2020-09-03 13:29:50 +03:00
Aliaksandr Valialkin	7d89fafe1a	app/vmselect/promql: allow passing multiple args to aggregate functions such as avg(q1, q2, q3)	2020-08-15 01:15:09 +03:00
Aliaksandr Valialkin	716754fae6	app/vmselect/promql: properly handle -n^m like Prometheus does ... `-n^m` must be handled as `-(n^m)` instead of `(-n)^m`. See https://github.com/VictoriaMetrics/VictoriaMetrics/issues/675	2020-08-07 07:42:18 +03:00
Aliaksandr Valialkin	bb61a4769b	app/vmselect/promql: remove metric name after applying clamp_min and clamp_max functions in order to be consistent with Prometheus ... This improves VictoriaMetrics score at https://promlabs.com/promql-compliance-test-results-victoriametrics/	2020-08-06 23:42:37 +03:00
Aliaksandr Valialkin	e5202a4eae	app/vmselect/promql: remove metric name from results of certain rollup functions in order to be consistent with Prometheus ... Rollup functions: - avg_over_time - min_over_time - max_over_time - quantile_over_time This improves VictoriaMetrics results at https://promlabs.com/promql-compliance-test-results-victoriametrics/	2020-08-06 23:29:13 +03:00
Aliaksandr Valialkin	68e4f40a72	app/vmselect: properly handle PromQL queries like scalar1 < metric < scalar2 like Prometheus does ... This fixes some cases from https://promlabs.com/promql-compliance-test-results-victoriametrics/	2020-08-06 23:21:03 +03:00
Aliaksandr Valialkin	e6eee2bebf	app/vmselect/promql: add zscore-related functions: zscore_over_time(m[d]) and zscore(q) by (...)	2020-08-03 21:52:18 +03:00
Aliaksandr Valialkin	894dcb7c1c	app/vmselect/promql: improve further the accuracy of buckets_limit() function ... The accuracy is increased by mergin the smallest bucket with the smallest adjacent bucket.	2020-07-26 12:10:13 +03:00
Aliaksandr Valialkin	994fa2f3bf	app/vmselect/promql: add buckets_limit(k, buckets) function, which limits the number of buckets per time series to k ... This function works with both Prometheus-style and VictoriaMetrics-style buckets. The function removes buckets with the lowest values in order to reserve the highest precision. The function is useful for building heatmaps in Grafana from too big number of buckets.	2020-07-24 16:13:53 +03:00
Aliaksandr Valialkin	3e557c9861	app/vmselect/promql: add rate_over_sum(m[d]) function to MetricsQL, which returns rate over sum of m values over d duration ... Something like `sum_over_time(m[d]) / d`, but more accurate.	2020-07-24 01:17:42 +03:00
Aliaksandr Valialkin	caa2952aa6	app/vmselect: take into account the time spent in wait queue before query execution as time spent on the query	2020-07-21 19:00:09 +03:00
Aliaksandr Valialkin	ecb1b2564a	app/vmselect/promql: add mode() aggregate function	2020-07-20 15:31:20 +03:00
Aliaksandr Valialkin	1c641037e8	app/vmselect/promql: add mode_over_time(m[d]) function ... See https://en.wikipedia.org/wiki/Mode_(statistics) and https://stackoverflow.com/questions/61134078/promql-query-to-return-the-value-from-a-range-vector-which-occurs-maximum-no-of	2020-07-17 18:28:45 +03:00
Aliaksandr Valialkin	8949d65ad1	app/vmselect/promql: check that any() doesn't touch metric name	2020-07-17 16:23:21 +03:00
Aliaksandr Valialkin	aa5d88055d	app/vmselect/promql: add group() aggregate function to MetricsQL ... This function has been added in Prometheus 2.20. See https://github.com/prometheus/prometheus/pull/7480	2020-07-17 15:17:55 +03:00
Aliaksandr Valialkin	df01836818	app/vmselect/promql: keep all labels for time series from any() call	2020-07-17 15:17:54 +03:00
Aliaksandr Valialkin	9c350bc20d	app/vmselect/promql: add missing tests for ifnot binary operation	2020-07-09 13:24:06 +03:00
Aliaksandr Valialkin	5d3db3ff7c	app/vmselect: add interpolate function for filling gaps with linearly interpolated values ... See https://stackoverflow.com/q/62565021/274937 for details	2020-07-02 14:54:21 +03:00
nicbaz	774f7ca1c1	vmselect: fix label_replace when mismatch (#579) ... As per documentation on `label_replace` function: "If the regular expression doesn't match then the timeseries is returned unchanged". Currently this behavior is not enforced, if a regexp on an existing tag doesn't match then the tag value is copied as-is in the destination tag. This fix first checks that the regular expression matches the source tag before applying anything. Given the current implementation, this fix also changes the behavior of the **MetricsQL** `label_transform` function which does not document this behavior at the moment.	2020-06-23 23:50:33 +03:00