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223 Commits

Author SHA1 Message Date
Aliaksandr Valialkin
d962568e93 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 23:33:46 +03:00
nicbaz
46c5c0772c 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 23:54:29 +03:00
Aliaksandr Valialkin
70bf8218bb app/vmselect/promql: properly override label values from group_left and group_right lists like Prometheus does 
Updates https://github.com/VictoriaMetrics/VictoriaMetrics/issues/577
 2020-06-21 16:32:27 +03:00
Aliaksandr Valialkin
6939e36fdd app/vmselect/promql: fill gaps on right side with values from left side of or operator in the same way as Prometheus does 
Updates https://github.com/VictoriaMetrics/VictoriaMetrics/issues/552
 2020-06-18 23:05:23 +03:00
Aliaksandr Valialkin
d83c68ca03 app/vmselect/promql: add ascent_over_time(m[d]) and descent_over_time(m[d]) functions 
These functions could be useful in GPS tracking apps for calculating the summary for height gain/loss
over the given duration `d`.
 2020-05-21 12:06:34 +03:00
Aliaksandr Valialkin
8ff28f5b91 app/vmselect/promql: update numbers after the upgrade of github.com/VictoriaMetrics/metrics from v1.11.2 to v1.11.3 2020-05-20 03:07:07 +03:00
Aliaksandr Valialkin
7d46dd452a app/vmselect/promql: move common code from aggrFuncOutliersK and newAggrFuncRangeTopK into getRangeTopKTimeseries 2020-05-19 16:11:03 +03:00
Aliaksandr Valialkin
37068064dd app/vmselect/promql: fix outilersk calculations 2020-05-19 14:45:10 +03:00
Aliaksandr Valialkin
fc81ea38d4 app/vmselect/promql: add outliersk(N, m) aggregate function for anomaly detection across groups of similar time series 2020-05-19 13:52:44 +03:00
Aliaksandr Valialkin
3845420a8f lib: extract common code for returning fast unix timestamp into lib/fasttime 2020-05-14 23:06:50 +03:00
Aliaksandr Valialkin
f3d9a5b0ec app/vmselect/promql: suppress "SA4006: this value of dstValues is never used" error in golangci-lint 2020-05-13 11:46:05 +03:00
Aliaksandr Valialkin
18a0caee43 app/vmselect/promql: fix any(..) calculations - return all the data points instead of the first one 2020-05-12 20:36:49 +03:00
Aliaksandr Valialkin
81b8811cf4 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.
 2020-05-12 19:54:44 +03:00
Aliaksandr Valialkin
408ade27a9 app/vmselect/promql: add any(x) by (y) aggregate function, which returns any time series from q for each group y 2020-05-12 19:50:29 +03:00
Aliaksandr Valialkin
21c2982ac8 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 19:50:12 +03:00
Aliaksandr Valialkin
f341c6fcc4 Revert "app/vmselect: add -search.estimatedSeriesCountAfterAggregation command-line flag for tuning the probability of OOMs or false-positive not enough memory errors" 
This reverts commit fbb7986dd2380fce2fc8633b7eda8b67f419e74c.

Reason for revert: this commit has been removed from single-node version
 2020-05-12 19:50:08 +03:00
Aliaksandr Valialkin
9ed4951ec8 lib/metricsql: move it to a separate repository - github.com/VictoriaMetrics/metrics 2020-04-28 15:30:06 +03:00
Aliaksandr Valialkin
cd1145e5f4 app/vmselect: add -search.estimatedSeriesCountAfterAggregation command-line flag for tuning the probability of OOMs or false-positive not enough memory errors 2020-04-28 12:51:48 +03:00
Aliaksandr Valialkin
b59f1f1504 app/vmselect: add -search.minStalenessInterval command-line flag for removing gaps on graphs built from time series with irregular duration between samples 
Updates https://github.com/VictoriaMetrics/VictoriaMetrics/issues/426
 2020-04-20 19:42:41 +03:00
Aliaksandr Valialkin
603d4c9217 app/vmselect: merge -search.maxLookback and -search.maxStalenessInterval flags, since it has been appeared they have identical purpose :( 
Leave both flags for backwards compatibility reasons.

Updates https://github.com/VictoriaMetrics/VictoriaMetrics/issues/209
Updates https://github.com/VictoriaMetrics/VictoriaMetrics/issues/426
 2020-04-20 19:28:28 +03:00
Aliaksandr Valialkin
a873b553cf app/vmselect: handle timestamp(metric offset X) the same way as Prometheus does 
Updates https://github.com/VictoriaMetrics/VictoriaMetrics/issues/415
 2020-04-15 12:01:05 +03:00
Aliaksandr Valialkin
a012f6fe70 app/vmselect/promql: keep metric name after applying first_over_time and last_over_time functions 2020-04-04 14:54:02 +03:00
Aliaksandr Valialkin
58cb7fc476 app/vmselect: adjust label_map() handling for corner cases 
The following corner cases now supported:
* label_map(q, "label", "", "foo") - adds `label="foo"` to series with missing `label`
* label_map(q, "label", "foo", "") - removes `label="foo"` from series

All the unmatched labels are kept unchanged.
 2020-03-13 18:41:52 +02:00
Aliaksandr Valialkin
0e7a71a245 app/vmselect: add label_map(q, label, srcValue1, dstValue1, ... srcValueN, dstValueN) function to MetricsQL 
Updates https://github.com/VictoriaMetrics/VictoriaMetrics/issues/369
 2020-03-12 19:13:56 +02:00
Aliaksandr Valialkin
50555d89d3 app/vmselect: add -search.maxStalenessInterval for tuning Prometheus data model closer to Influx-style data model 2020-03-11 16:44:03 +02:00
Aliaksandr Valialkin
0d893eff36 Makefile: add build and test rules with enabled race detector. These rules have -race suffix 
Fix also `unsafe pointer conversion` errors detected by Go1.14. See https://golang.org/doc/go1.14#compiler .
 2020-03-05 12:05:16 +02:00
Aliaksandr Valialkin
6ca1e58d98 app/vmselect/promql: properly take into account the first datapoint when calculating rollup_candlestick 2020-02-24 13:25:07 +02:00
Aliaksandr Valialkin
b58e3fc8a9 app/vmselect/promql: do not take into account values outside the current window in rollup_candlestick 
Updates https://github.com/VictoriaMetrics/VictoriaMetrics/issues/309
 2020-02-23 18:06:26 +02:00
Yaroslav
c69d4b01f0 fix rollupOpen(), rollupHigh(), rollupLow() functions (#328) 2020-02-23 18:06:25 +02:00
Aliaksandr Valialkin
f22aefdb16 app/vmselect/promql: log when rollupResult cache is cleared 2020-02-21 20:06:53 +02:00
Aliaksandr Valialkin
d5c2a0ce64 app/vmselect: add -search.cacheTimestampOffset command-line flag 
This flag can be used for removing gaps on graphs if the difference between the current time
and the timestamps from the ingested data exceeds 5 minutes.

This is the case when the time between data sources and VictoriaMetrics is improperly synchronized.

Updates https://github.com/VictoriaMetrics/VictoriaMetrics/issues/312
 2020-02-21 14:02:15 +02:00
Aliaksandr Valialkin
846d7fa7e9 app/vmselect: add sort_by_label(q, label) and sort_by_label_desc(q, label) functions 
This is implementation of https://github.com/prometheus/prometheus/pull/1533 for VictoriaMetrics.
 2020-02-13 17:01:50 +02:00
Aliaksandr Valialkin
e6d9ea3094 app/vmselect/promql: do not add step to range end, since this hack became obsolete since commit 9e1119dab8 2020-02-05 21:23:44 +02:00
Aliaksandr Valialkin
4a1de7fee9 app/vmselect/promql: properly adjust time range for data to select 
Updates https://github.com/VictoriaMetrics/VictoriaMetrics/issues/309
 2020-02-05 21:23:43 +02:00
Aliaksandr Valialkin
8e77b54846 app/vmselect: unconditionally offset -step to rollup_candlestick. This makes results more consistent 2020-02-04 23:31:47 +02:00
Aliaksandr Valialkin
ce38b176bc 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 23:24:04 +02:00
Aliaksandr Valialkin
4f7116d1ee app/vmselect/promql: adjust rollup_candlestick calculations to the exepcted results 
Updates https://github.com/VictoriaMetrics/VictoriaMetrics/issues/309
 2020-02-04 22:43:28 +02:00
Aliaksandr Valialkin
45bc6c62f2 app/vmselect/promql: adjust and and unless binary operator handling to be consistent with Prometheus 2020-01-31 18:52:51 +02:00
Aliaksandr Valialkin
170c1c3a4e app/vmselect/promql: add keep_next_value(q) for filling gaps with the next non-empty value 2020-01-29 00:48:14 +02:00
Aliaksandr Valialkin
b28c9a3944 app/vmselect/promql: return expected results from increase() over the beginning of time series, which start from big value 
Examples for such counters: OS-level counters for network or cpu stats.
 2020-01-28 16:31:05 +02:00
Aliaksandr Valialkin
3e304890a6 app/vmselect/promql: fix panic on a single zero vmrange bucket in prometheus_buckets() function 
Updates https://github.com/VictoriaMetrics/VictoriaMetrics/issues/296
 2020-01-27 18:05:12 +02:00
Aliaksandr Valialkin
ea53a21b02 all: consistently log durations in seconds with millisecond precision 
This should improve logs readability
 2020-01-22 18:35:24 +02:00
Aliaksandr Valialkin
e127173984 app/vmselect: mention command-line flag, which could be used for adjusting query timeouts, in timeout errors 2020-01-22 15:53:42 +02:00
Aliaksandr Valialkin
40e564eb9c app/vmselect/promql: add range_over_time(m[d]) function for calculating value range for m over d 2020-01-21 19:05:29 +02:00
Aliaksandr Valialkin
9eaa2ab871 app/vmselect/promql: add label_match(q, label, regexp) and label_mismatch(q, label, regexp) functions for filtering out time series with labels matching the given regexp 2020-01-21 15:00:35 +02:00
Aliaksandr Valialkin
ce0b602405 app/vmselect/promql: fix panic on sum(aggr_over_time(...)) with incorrect number of args 2020-01-15 16:26:16 +02:00
Aliaksandr Valialkin
bcd3f0c5bd 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 14:47:13 +02:00
Aliaksandr Valialkin
fc01b11ddc app/vmselect/promql: return continuous values for min_over_time and max_over_time when step is smaller than scrape_interval 2020-01-11 12:47:57 +02:00
Aliaksandr Valialkin
16fb128bbc app/vmselect/promql: do not take into account the previous point before time window in square brackets for min_over_time, max_over_time, rollup_first and rollup_last functions 
This makes the behaviour for these functions similar to Prometheus when processing broken time series with irregular data points
like `gitlab_runner_jobs`. See https://gitlab.com/gitlab-org/gitlab-exporter/issues/50 for details.
 2020-01-11 00:26:11 +02:00
Aliaksandr Valialkin
adc36d00b7 app/vmselect/promql: properly handle aggr(aggr_over_time(...)) 2020-01-10 21:57:11 +02:00
Aliaksandr Valialkin
87a106702b 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 21:18:12 +02:00
Aliaksandr Valialkin
c314d9a219 app/vmselect/promql: add tmin_over_time(m[d]) and tmax_over_time(m[d]) functions 
These functions return timestamp in seconds for the minimum and maximum value for `m` over time range `d`
 2020-01-10 19:39:34 +02:00
Aliaksandr Valialkin
7c6df1e51d app/vmselect/promql: skip rate calculation for the first point on time series 2020-01-08 14:42:44 +02:00
Aliaksandr Valialkin
76707b2ab9 app/vmselect/promql: fix calculations for histogram_share 2020-01-04 14:44:15 +02:00
Aliaksandr Valialkin
accad01b3e app/vmselect/promql: add missing MetricName into netstorage.Result in tests 2020-01-04 12:53:14 +02:00
Aliaksandr Valialkin
6f29d37cb5 app/vmselect/promql: add histogram_share(le, buckets) function 2020-01-04 12:53:08 +02:00
Aliaksandr Valialkin
2290503140 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 12:53:01 +02:00
Aliaksandr Valialkin
67f94bbe12 app/vmselect/promql: add histogram_over_time(m[d]) rollup function 2020-01-04 12:52:56 +02:00
Aliaksandr Valialkin
9a1f6848ca 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 20:44:54 +02:00
Aliaksandr Valialkin
3d0c7b095a app/vmselect/promql: use scrapeInterval instead of window in denominator when calculating rate for the first point on the time series 
This should provide better estimation for `rate` in the beginning of time series.
 2020-01-03 19:03:32 +02:00
Aliaksandr Valialkin
6ea7f23446 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 01:02:30 +02:00
Aliaksandr Valialkin
e0abf45d45 app/vmselect/promql: add share_le_over_time and share_gt_over_time functions for SLI and SLO calculations 2020-01-03 00:41:36 +02:00
Aliaksandr Valialkin
eb1a66c577 lib/metricsq: add ExpandWithExprs 2019-12-25 22:20:21 +02:00
Aliaksandr Valialkin
453d71d082 Rename lib/promql to lib/metricsql and apply small fixes 2019-12-25 22:09:09 +02:00
Mike Poindexter
009d1559db Split Extended PromQL parsing to a separate library 2019-12-25 22:09:07 +02:00
Aliaksandr Valialkin
ff18101d30 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 22:45:49 +02:00
Aliaksandr Valialkin
e24ee43109 app/vmselect/promql: adjust calculations for rate and increase for the first value 
These calculations should trigger alerts on `/api/v1/query` for counters starting from values greater than 0.
 2019-12-24 19:41:03 +02:00
Aliaksandr Valialkin
9a2554691c app/vmselect/promql: properly calculate rate on the first data point 
It is calculated as `value / scrape_interval`, since the value was missing on the previous scrape,
i.e. we can assume its value was 0 at this time.
 2019-12-24 15:55:15 +02:00
Aliaksandr Valialkin
b238997a84 all: rename Extended PromQL to PromQL extensions 2019-12-12 19:29:59 +02:00
Aliaksandr Valialkin
c25b97829f app/vmselect/promql: return lower and upper bounds for the estimated percentile from histogram_quantile if third arg is passed 
Updates https://github.com/prometheus/prometheus/issues/5706
 2019-12-11 14:00:18 +02:00
Aliaksandr Valialkin
f79b61e2a1 app/vmselect/promql: return matrix instead of vector on subqueries to /api/v1/query like Prometheus does 2019-12-11 00:57:54 +02:00
Aliaksandr Valialkin
5d2ff573aa app/vmselect/promql: allow negative offsets 
Updates https://github.com/prometheus/prometheus/issues/6282
 2019-12-11 00:57:51 +02:00
Aliaksandr Valialkin
d39bba3547 app/vmselect/promql: add {topk|bottomk}_{min|max|avg|median} aggregate functions for returning the exact k time series on the given time range 
The full list of functions added:
- `topk_min(k, q)` - returns top K time series with the max minimums on the given time range
- `topk_max(k, q)` - returns top K time series with the max maximums on the given time range
- `topk_avg(k, q)` - returns top K time series with the max averages on the given time range
- `topk_median(k, q)` - returns top K time series with the max medians on the given time range
- `bottomk_min(k, q)` - returns bottom K time series with the min minimums on the given time range
- `bottomk_max(k, q)` - returns bottom K time series with the min maximums on the given time range
- `bottomk_avg(k, q)` - returns bottom K time series with the min averages on the given time range
- `bottomk_median(k, q)` - returns bottom K time series with the min medians on the given time range
 2019-12-05 19:27:45 +02:00
Aliaksandr Valialkin
819bb36852 app/vmselect/promql: estimate per-series scrape interval as 0.6 quantile for the first 100 intervals 
This should improve scrape interval estimation for tiem series with gaps.
 2019-12-02 13:43:04 +02:00
Aliaksandr Valialkin
1e2019b1b6 app/vmselect/promql: fix corner case for increase over time series with gaps 
In this case `increase` could return invalid high value for the first point after the gap.
 2019-11-30 01:34:18 +02:00
Aliaksandr Valialkin
28cc4c09b5 app/vmselect/promql: remove zero timeseries from prometheus_buckets output 2019-11-25 19:10:13 +02:00
Aliaksandr Valialkin
f7da9b2db2 app/vmselect/promql: allow nested parens 2019-11-25 16:13:33 +02:00
Aliaksandr Valialkin
d2619d6dce vendor: update github.com/VictoriaMetrics/metrics from v1.9.0 to v1.9.1 2019-11-25 15:22:50 +02:00
Aliaksandr Valialkin
f46fb6c740 app/vmselect/promql: re-use metrics.Histogram when calculating histogram function for each point on the graph 
This should reduce the amounts memory allocations
 2019-11-25 14:24:30 +02:00
Aliaksandr Valialkin
0f184affa7 app/vmselect/promql: optimize binary search over big number of samples during rollup calculations 2019-11-25 14:01:54 +02:00
Aliaksandr Valialkin
dbd07041ae app/vmselect/promql: adjust tests after the upgrade of github.com/VictoriaMetrics/metrics from v1.8.3 to v1.9.0 2019-11-25 13:44:08 +02:00
Aliaksandr Valialkin
8bb254d960 app/vmselect/promql: add histogram aggregate function, which is useful for building heatmaps from multiple time series 2019-11-24 00:04:15 +02:00
Aliaksandr Valialkin
414259f47b app/vmselect/promql: do not take into account buckets with negative counters in prometheus_buckets 2019-11-23 14:19:19 +02:00
Aliaksandr Valialkin
193d553f6d app/vmselect/promql: properly handle histogram_quantile(0, ...) with zero buckets 2019-11-23 14:02:25 +02:00
Aliaksandr Valialkin
4d76977745 app/vmselect/promql: transparently apply prometheus_buckets in histogram_quantile 2019-11-23 11:49:16 +02:00
Aliaksandr Valialkin
5f6f03c692 app/vmselect/promql: add prometheus_buckets function for converting the upcoming histogram buckets from github.com/VictoriaMetrics/metrics to Prometheus-compatible buckets 2019-11-23 00:21:56 +02:00
Aliaksandr Valialkin
77bb66a5be app/vmselect/promql: properly calculate integrate(q[d]) 2019-11-13 21:11:03 +02:00
Aliaksandr Valialkin
c33640664a app/vmselect/promql: use universal approach for determining maxByteSliceLen on 32-bit and 64-bit archs 
Updates https://github.com/VictoriaMetrics/VictoriaMetrics/issues/235
 2019-11-13 20:26:07 +02:00
Aliaksandr Valialkin
33abbec6b4 app/vmselect/promql: adjust memory limits calculations for incremental aggregate functions 
Incremental aggregate functions don't keep all the selected time series in memory -
they keep only up to GOMAXPROCS time series for incremental aggregations.

Take into account that the number of time series in RAM can be higher if they are split
into many groups with `by (...)` or `without (...)` modifiers.

This should reduce the number of `not enough memory for processing ... data points` false
positive errors.
 2019-11-08 19:37:43 +02:00
Aliaksandr Valialkin
4a8251feff app/vmselect/promql: add lag(q[d]) function, which returns the lag between the current timestamp and the timstamp for the last data point in q 2019-11-01 12:21:43 +02:00
Aliaksandr Valialkin
5b01b7fb01 all: add support for GOARCH=386 and fix all the issues related to 32-bit architectures such as GOARCH=arm 
Updates https://github.com/VictoriaMetrics/VictoriaMetrics/issues/212
 2019-10-17 18:27:49 +03:00
Aliaksandr Valialkin
99786c2864 app/vmselect/prometheus: add -search.maxLookback command-line flag for overriding dynamic calculations for max lookback interval 
This flag is similar to `-search.lookback-delta` if set. The max lookback interval is determined dynamically
from interval between datapoints for each input time series if the flag isn't set.

The interval can be overriden on per-query basis by passing `max_lookback=<duration>` query arg to `/api/v1/query` and `/api/v1/query_range`.

Updates https://github.com/VictoriaMetrics/VictoriaMetrics/issues/209
 2019-10-15 21:37:17 +03:00
Aliaksandr Valialkin
a5302a6651 app/vmselect/promql: take into account the previous point when calculating max_over_time and min_over_time 
This lines up with `first_over_time` function used in `rollup_candlestick`, so `rollup=low` always returns
the minimum value.

Updates https://github.com/VictoriaMetrics/VictoriaMetrics/issues/204
 2019-10-08 12:30:16 +03:00
Aliaksandr Valialkin
ba460f62e6 app/vmselect/promql: do not generate timestamps for NaN values in timestamp function according to Prometheus logic 2019-09-27 18:55:16 +03:00
Aliaksandr Valialkin
bd1cf053f6 app/vmselect/promql: add increases_over_time and decreases_over_time functions 
`increases_over_time(q[d])` returns the number of `q` increases during the given duration `d`.
`decreases_over_time(q[d])` returns the number of `q` decreases during the given duration `d`.
 2019-09-25 20:38:51 +03:00
Aliaksandr Valialkin
ee4585db33 app/vmselect/promql: properly handle subqueries like aggr_func(rollup_func(metric[window:step])) 
Updates https://github.com/VictoriaMetrics/VictoriaMetrics/issues/184
 2019-09-13 21:42:11 +03:00
Aliaksandr Valialkin
828e5f6d26 app/vmselect/promql: binary operation fixes according to Prometheus behaviour 
The follosing issues were fixed:
- VictoriaMetrics could leave superflouos labels when using `on` or `ignoring` modifiers
- VictoriaMetrics could return `duplicate timeseries` error when using `group_left` or `group_right` with non-empty label list
 2019-09-13 17:43:09 +03:00
Aliaksandr Valialkin
d0953e9f02 app/vmselect/promql: ignore grouping by destination label in count_values, since such a grouping is performed automatically 2019-09-04 19:59:02 +03:00
Aliaksandr Valialkin
f78ffe565f app/vmselect/promql: do not return artificial points beyond the last point in time series 2019-09-04 16:34:29 +03:00
Aliaksandr Valialkin
b08f085082 app/vmselect/promql: reset timeseries name on group_left and group_right as Prometheus does 2019-09-03 20:43:29 +03:00