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Author SHA1 Message Date
Aliaksandr Valialkin
a8d22e1223
app/vmselect/promql: check for binary operation in case-insensitive manner when deciding which side of the operation to perform the first 
PromQL and MetricsQL operators are case-insensitive
 2022-01-31 22:06:15 +02:00
Aliaksandr Valialkin
e7f1ceeb84
app/vmselect/promql: optimize queries, which join on _info metrics. 
Automatically add common filters from one side of binary operation
to the other side before sending the query to storage subsystem.

See https://grafana.com/blog/2021/08/04/how-to-use-promql-joins-for-more-effective-queries-of-prometheus-metrics-at-scale/
and https://www.robustperception.io/exposing-the-software-version-to-prometheus
 2022-01-31 19:32:36 +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
f41846d002
app/vmselect/promql: add stale_samples_over_time() function 2022-01-14 01:48:04 +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
ff15a752c1
app/vmselect: accept optional extra_filters[] query args for all the supported Prometheus querying APIs 
See https://github.com/VictoriaMetrics/VictoriaMetrics/issues/1863
 2021-12-06 17:07:09 +02:00
Michael Fuller
cf8c171f85
vmselect: in promql evaluation, return bytes requested when rollup memory limiter is unable to satisfy the request (#1838) 
Co-authored-by: Michael Fuller <mfuller@digitalocean.com>
 2021-11-22 13:20:42 +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
cdc372bb98 app/vmselect: add -search.noStaleMarkers command-line flag for disabling stale markers handling in queries 
This option allows reducing CPU usage a bit when VictoriaMetrics is used
for collecting and processing non-Prometheus data. For example, InfluxDB line protocol, Graphite, OpenTSDB, CSV, etc.
 2021-08-18 13:59:02 +03:00
Aliaksandr Valialkin
bd14b0887e app/vmselect/promql: move common condition to dropStaleNaNs in order to improve code maintainability 2021-08-17 11:01:16 +03:00
Aliaksandr Valialkin
113f0a8a07 app/vmselect/promql: drop staleness marks before calling rollupConfig.Do 
This allows dropping staleness marks only once and then calculate multiple rollup functions on the result.

Updates https://github.com/VictoriaMetrics/VictoriaMetrics/issues/1526
 2021-08-15 13:21:10 +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
71b72304ae app/vmselect: improve description for -search.maxPointsPerTimeseries command-line flag 2021-03-22 16:45:34 +02:00
Aliaksandr Valialkin
2dae0a2c47 app/vmselect: add round_digits query arg to /api/v1/query and /api/v1/query_range handlers for limiting the number of decimal digits after the point 2021-03-15 12:36:33 +02:00
Aliaksandr Valialkin
2d33230793 app/vmselect/promql: properly make copies of EvalConfig 2021-02-11 12:41:15 +02:00
Aliaksandr Valialkin
7a3a9421f3 app/vmselect/promql: make a copy of EvalConfig when executing q1 and q2 in parallel for q1 binary_op q2 
This should prevent from data races if the underlying functions modify EvalConfig contents.
 2021-02-10 23:05:55 +02:00
Aliaksandr Valialkin
04faea8b45 app/vmselect: parallelize q1 <binary_op> q2 queries by running q1 and q2 in parallel 
This should reduce query execution times.
 2021-02-10 22:59:39 +02:00
Aliaksandr Valialkin
b43b498fd8 app/vmselect: add ability to pass extra_label=<label>=<value> query arg to Prometheus Querying API 
This enforced `{label="value"}` label filter to the query.

See https://github.com/VictoriaMetrics/VictoriaMetrics/issues/1021
 2021-02-01 18:04:17 +02:00
Aliaksandr Valialkin
c164a8d231 app/vmselect/promql: improve documentation for -search.maxPointsPertimeseries command-line flag 
This should reduce incorrect usage and assumptions for this flag.

See https://github.com/VictoriaMetrics/VictoriaMetrics/issues/1020
 2021-01-22 13:00:10 +02:00
Aliaksandr Valialkin
c86286ec1d app/vmselect/promql: do not ajdust offset value provided in the query 
Previously it could be modified in order to improve response cache hit ratio.
This is unneeded, since cache hit ratio should remain good because the query time range
should be already aligned to multiple of `step` values.

See https://github.com/VictoriaMetrics/VictoriaMetrics/issues/976
 2020-12-27 14:09:25 +02:00
Aliaksandr Valialkin
4146fc4668 all: properly handle CPU limits set on the host system/container 
This can reduce memory usage on systems with enabled CPU limits.

Updates https://github.com/VictoriaMetrics/VictoriaMetrics/issues/946
 2020-12-08 21:07:29 +02:00
Aliaksandr Valialkin
266788be14 app/vmselect: use storage.NewSearchQuery() instead of constructing storage.SearchQuery in-place 
This should prevent from bugs when AccountID and ProjectID aren't set in storage.SearchQuery.
 2020-11-16 18:24:00 +02:00
Aliaksandr Valialkin
1b3efccb24 app/vmselect: stop /api/v1/export/* execution if client disconnects 2020-09-27 23:53:13 +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
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
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
509d12643b app/vmselect: show X-Forwarded-For contents on /api/v1/status/active_queries page 
Updates https://github.com/VictoriaMetrics/VictoriaMetrics/issues/659
 2020-07-31 20:05:18 +03:00
Aliaksandr Valialkin
f0c678c41b app/vmselect: do not adjust start and end query args passed to /api/v1/query_range when -search.disableCache command-line flag is set 
Updates https://github.com/VictoriaMetrics/VictoriaMetrics/issues/563
 2020-07-30 23:14:37 +03:00
Aliaksandr Valialkin
79c30cf4cb app/vmselect: show query origin (aka remote_addr or client address) on the /api/v1/status/active_queries page for every query 2020-07-28 15:13:08 +03:00
Aliaksandr Valialkin
b9c8f6bf34 app/vmselect: log the total available memory for concurrent requests on not enough memory errors 
This should simplify root cause analysis
 2020-07-20 19:51:40 +03:00
Aliaksandr Valialkin
d5dddb0953 all: use %w instead of %s for wrapping errors in fmt.Errorf 
This will simplify examining the returned errors such as httpserver.ErrorWithStatusCode .
See https://blog.golang.org/go1.13-errors for details.
 2020-06-30 23:05:11 +03:00
Aliaksandr Valialkin
574289c3fb app/vmselect/promql: support for sum(x) by (y) limit N syntax in order to limit the number of output time series after aggregation 2020-05-12 19:45:54 +03:00
Aliaksandr Valialkin
57407cca83 app/vmselect/promql: remove -search.maxPointsPerTimeseries command-line flag 
Limit the estimated time series count after aggregation with grouping by the number of source time series.
 2020-04-29 00:20:04 +03:00
Aliaksandr Valialkin
4e4f57b121 lib/metricsql: move it to a separate repository - github.com/VictoriaMetrics/metrics 2020-04-28 15:28:22 +03:00
Aliaksandr Valialkin
17d96e4503 app/vmselect: add -search.estimatedSeriesCountAfterAggregation command-line flag for tuning the probability of OOMs vs false-positive not enough memory errors 2020-04-28 12:52:37 +03:00
Aliaksandr Valialkin
78b62dee87 app/vmselect/promql: properly adjust time range for data to select 
Updates https://github.com/VictoriaMetrics/VictoriaMetrics/issues/309
 2020-02-05 21:22:18 +02:00
Aliaksandr Valialkin
366693b9f1 app/vmselect: unconditionally offset -step to rollup_candlestick. This makes results more consistent 2020-02-04 23:32:12 +02:00
Aliaksandr Valialkin
525101339e app/vmselect/promql: automatically apply offset -step to rollup_candlestick function in order to obtain the expected OHLC results 
See https://github.com/VictoriaMetrics/VictoriaMetrics/issues/309
 2020-02-04 23:24:35 +02:00
Aliaksandr Valialkin
2839f4688a app/vmselect/promql: fix panic on sum(aggr_over_time(...)) with incorrect number of args 2020-01-15 16:26:09 +02:00
Aliaksandr Valialkin
8b14572f70 app/vmselect/promql: add hoeffding_bound_upper(phi, m[d]) and hoeffding_bound_lower(phi, m[d]) functions 
These functions can be used for calculating Hoeffding bounds
for `m` over `d` time range and for the given `phi` in the range `[0..1]`.

Updates https://github.com/VictoriaMetrics/VictoriaMetrics/issues/283
 2020-01-11 14:46:23 +02:00
Aliaksandr Valialkin
164278151f app/vmselect/promql: add aggr_over_time(("aggr_func1", "aggr_func2", ...), m[d]) function 
This function can be used for simultaneous calculating of multiple `aggr_func*` functions
that accept range vector. For example, `aggr_over_time(("min_over_time", "max_over_time"), m[d])`
would calculate `min_over_time` and `max_over_time` for `m[d]`.
 2020-01-10 21:18:06 +02:00
Aliaksandr Valialkin
b1ded7cf9a app/vmselect/promql: add absent_over_time(m[d]) func similar to the function in Prometheus 2.16 
See https://github.com/prometheus/prometheus/issues/2882
 2020-01-04 12:45:07 +02:00
Aliaksandr Valialkin
a8360d04c0 app/vmselect/promql: add histogram_over_time(m[d]) rollup function 2020-01-04 12:44:56 +02:00
Aliaksandr Valialkin
3e09d38f29 app/vmselect/promql: fix results caching for multi-arg rollup functions such as quantile_over_time 
Previosly only a single arg was taken into account, so caching didn't work properly for multi-arg rollup funcs.
 2020-01-03 20:49:08 +02:00
Aliaksandr Valialkin
b5645ccbdf app/vmselect/promql: increase the estimated number of time series returned by aggr() by (something) from 100 to 1K, since 100 may result in OOM for high number of time series 2020-01-03 01:02:21 +02:00
Aliaksandr Valialkin
1925ee038d Rename lib/promql to lib/metricsql and apply small fixes 2019-12-25 22:03:59 +02:00
Mike Poindexter
bec62e4e43 Split Extended PromQL parsing to a separate library 2019-12-25 22:03:51 +02:00
Aliaksandr Valialkin
d880325cf6 app/vmselect/promql: make sure AdjustStartEnd returns time range covering the same number of points as the initial time range 
This should prevent from the following panic at app/vmselect/promql/binary_op.go:255:

    BUG: len(leftVaues) must match len(rightValues) and len(dstValues)
 2019-12-24 22:45:56 +02:00
Aliaksandr Valialkin
3c076544bf app/vmselect/promql: allow negative offsets 
Updates https://github.com/prometheus/prometheus/issues/6282
 2019-12-11 01:00:23 +02:00