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
19dfe52254
app/vmselect/promql: properly handle histogram_quantile(0, ...) with zero buckets
2019-11-23 14:02:35 +02:00
Aliaksandr Valialkin
7753c8c0a1
app/vmselect/promql: transparently apply prometheus_buckets in histogram_quantile
2019-11-23 11:48:51 +02:00
Aliaksandr Valialkin
c4287b3c86
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 00:20:20 +02:00
Aliaksandr Valialkin
2f58f37f07
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 12:21:33 +02:00
Aliaksandr Valialkin
956fdd89d3
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 12:30:05 +03:00
Aliaksandr Valialkin
67d44b0845
app/vmselect/promql: do not generate timestamps for NaN values in timestamp function according to Prometheus logic
2019-09-27 18:54:43 +03:00
Aliaksandr Valialkin
26dc21cf64
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 20:38:44 +03:00
Aliaksandr Valialkin
4d636c244d
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 17:42:52 +03:00
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
db4560ca31
app/vmselect/promql: reset timeseries name on group_left and group_right as Prometheus does
2019-09-03 20:42:54 +03:00
Aliaksandr Valialkin
1272e407b2
app/vmselect/promql: attempt to repair invalid bucket counts passed to histogram_quantile
...
Updates https://github.com/VictoriaMetrics/VictoriaMetrics/issues/136
Updates https://github.com/VictoriaMetrics/VictoriaMetrics/issues/154
2019-08-22 14:39:46 +03:00
Aliaksandr Valialkin
d3fd113a80
app/vmselect/promql: add label_value(q, label_name) func, which returns numeric value labels with name label_name in q
2019-08-20 00:28:34 +03:00
Aliaksandr Valialkin
10f5a26bec
app/vmselect/promql: return NaN values if invalid bucket counts are passed to histogram_quantile
...
Updates https://github.com/VictoriaMetrics/VictoriaMetrics/issues/136
2019-07-30 22:05:10 +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
2db685c19c
app/vmselect/promql: properly preserve metric name after applying functions in any case from transformFuncsKeepMetricGroup
2019-07-09 23:10:35 +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
b9166a60ff
app/vmselect: do not return empty time series in /api/v1/query result
2019-07-01 17:16:34 +03:00
Aliaksandr Valialkin
74c0fb04f3
app/vmselect/promql: consistency renaming: candlestick -> rollup_candlestick
2019-06-29 03:13:02 +03:00
Aliaksandr Valialkin
796b010139
app/vmselect: add candlestick(m[d]) func for returning open, close, low and high rollups on the given time range d
...
This function is frequently used in financial apps. See https://en.wikipedia.org/wiki/Candlestick_chart
2019-06-27 18:46:13 +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
9e1119dab8
app/vmselect/promql: ajdust data model to the model used in Prometheus
...
Do not take into account data points on the range `[timestamp .. timestamp+step)`
when calculating value on the given `timestamp`.
Use only data points from the past when performing these calculations like Prometheus does.
This should reduce discrepancies between results returned by VictoriaMetrics
and results returned by Prometheus.
Updates https://github.com/VictoriaMetrics/VictoriaMetrics/issues/72
Updates https://github.com/VictoriaMetrics/VictoriaMetrics/issues/71
2019-06-21 21:54:48 +03:00
Aliaksandr Valialkin
47a3228108
app/vmselect/promql: do not strip __name__ form time series after binary comparison operation
...
Example:
foo > 10
Would leave `foo` name for all the matching time series on the left.
2019-06-21 13:09:38 +03:00
Aliaksandr Valialkin
a8db528930
app/vmselect/promql: merge non-overlapping duplicate time series in group_left and group_right joins
2019-06-12 20:32:32 +03:00
Aliaksandr Valialkin
d15d0127fe
app/vmselect/promql: add alias(q, name) function that sets the given name to all the time series in q
2019-05-24 02:41:45 +03:00
Aliaksandr Valialkin
fb140eda33
app/vmselect/promql: add label_transform(q, label, regexp, replacement) function for replacing all the occurences of regexp with replacement in the given label for q
2019-05-23 16:26:19 +03:00
Aliaksandr Valialkin
1836c415e6
all: open-sourcing single-node version
2019-05-23 00:18:06 +03:00
