Commit Graph

65 Commits

Author SHA1 Message Date
Mike Poindexter
bec62e4e43 Split Extended PromQL parsing to a separate library 2019-12-25 22:03:51 +02:00
Aliaksandr Valialkin
cea5a14853 all: rename Extended PromQL to PromQL extensions 2019-12-12 19:25:58 +02:00
Aliaksandr Valialkin
c09472dfd9 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 19:26:47 +02:00
Aliaksandr Valialkin
0401969d78 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 14:24:21 +02:00
Aliaksandr Valialkin
50ae1879c6 app/vmselect/promql: add histogram aggregate function, which is useful for building heatmaps from multiple time series 2019-11-24 00:04:25 +02:00
Aliaksandr Valialkin
6954e126fc app/vmselect/promql: ignore grouping by destination label in count_values, since such a grouping is performed automatically 2019-09-04 19:58:01 +03:00
Aliaksandr Valialkin
17096b5750 app/vmselect/promql: return NaN from count() over zero time series
This aligns `count` behavior with Prometheus.
2019-07-25 22:02:30 +03:00
Aliaksandr Valialkin
9203170eb2 app/vmselect/promql: extract rmoeveGroupTags function for removing unneeded tags from MetricName according to the given modifierExpr 2019-07-09 23:20:48 +03:00
Aliaksandr Valialkin
4dbd642c86 app/vmselect/promql: remove empty timeseries left after topk call 2019-07-04 19:42:39 +03:00
Aliaksandr Valialkin
90e72c2a42 app/vmselect/promql: add sum2 and sum2_over_time, geomean and geomean_over_time funcs.
These functions may be useful for statistic calculations.
2019-06-24 16:44:44 +03:00
Aliaksandr Valialkin
1c33b5937e app/vmselect/promql: prevent from count_values explosion of timeseries, which could result in OOM 2019-06-11 01:03:13 +03:00
Aliaksandr Valialkin
8bb6bc986d app/vmselect/promql: skip superflouos timestamps copying in count_values 2019-06-11 00:44:01 +03:00
Aliaksandr Valialkin
bf9782eaf6 app/vmselect/promql: skip NaN values in count_values func 2019-06-10 22:42:32 +03:00
Aliaksandr Valialkin
1458450dba app/vmselect/promql: return the correct time series from quantile
Previously arbitrary time series could be returned from `quantile`
depending on sort order for the last data point in the selected range.

Fix this by returning the calculated time series.

Fixes https://github.com/VictoriaMetrics/VictoriaMetrics/issues/55
2019-06-06 17:07:31 +03:00
Aliaksandr Valialkin
1836c415e6 all: open-sourcing single-node version 2019-05-23 00:18:06 +03:00