160 Commits

Author	SHA1	Message	Date
Aliaksandr Valialkin	6eb1580158	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 10:58:40 +03:00
Aliaksandr Valialkin	dac24aa342	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 15:34:14 +03:00
Aliaksandr Valialkin	bc54ae9608	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 14:56:41 +03:00
Aliaksandr Valialkin	a5cfe5d13e	app/vmselect/promql: add drop_common_labels() function	2022-04-21 14:20:36 +03:00
Aliaksandr Valialkin	25b841c6ed	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 22:21:20 +03:00
Aliaksandr Valialkin	b843f0e229	app/vmselect: add fine-grained limits for the number of returned/scanned time series for various APIs	2022-03-26 11:28:14 +02:00
Aliaksandr Valialkin	989668beba	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 15:46:43 +02:00
Aliaksandr Valialkin	cc76174387	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 15:33:39 +02:00
Aliaksandr Valialkin	5a1e4a140f	app/vmselect/promql: implement keep_metric_names modifier for transform and rollup functions ... Updates https://github.com/VictoriaMetrics/VictoriaMetrics/issues/949	2022-01-14 04:15:35 +02:00
Aliaksandr Valialkin	0580a58feb	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 22:15:19 +02:00
Aliaksandr Valialkin	7d635a2311	app/vmselect/promql: fix limit_offset() test ... The test has been broken in addae7fc6a	2022-01-13 16:58:47 +02:00
Aliaksandr Valialkin	3396f08874	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 13:15:06 +02:00
Aliaksandr Valialkin	c170841951	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 23:38:09 +02:00
Aliaksandr Valialkin	addae7fc6a	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 18:07:15 +02:00
Aliaksandr Valialkin	84decc4254	app/vmselect/promql: consistently return zero from deriv(const)	2021-11-17 18:01:58 +02:00
Aliaksandr Valialkin	aa6d11a33f	app/vmselect/promql: add now() function, which returns the current timestamp as a floating-point value in seconds	2021-11-17 16:42:11 +02:00
Aliaksandr Valialkin	3a1ac218ba	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 13:14:57 +02:00
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 ... 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 ... 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 ... 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 ... 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 ... 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) ... 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) ... 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) ... 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 ... 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) ... * 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) ... * 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 ... 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 ... 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 ... 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 ... 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 ... 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 ... 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 ... 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 ... - 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 ... 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) ... * 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