Aliaksandr Valialkin
0e52357f35
app/vmselect/promql: properly calculate incremental aggregations grouped by __name__
...
Previously the following query may fail on multiple distinct metric names match:
sum(count_over_time{__name__!=''}) by (__name__)
2019-07-25 21:53:26 +03:00
Aliaksandr Valialkin
6875fb411a
app/vmselect/promql: parallelize incremental aggregation to multiple CPU cores
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This may reduce response times for aggregation over big number of time series
with small step between output data points.
2019-07-12 15:53:12 +03:00
Aliaksandr Valialkin
cbab86fd9d
app/vmselect/promql: reduce RAM usage for aggregates over big number of time series
...
Calculate incremental aggregates for `aggr(metric_selector)` function instead of
keeping all the time series matching the given `metric_selector` in memory.
2019-07-10 13:03:36 +03:00
Aliaksandr Valialkin
c3c60bee45
app/vmselect: add -search.denyPartialResponse flag for disabling partial responses if some of vmstorage nodes are unavailable
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Also accept `deny_partial_response` query arg in Prometheus API handlers. If it is set to true,
then return error if some of vmstorage nodes are unavailable.
2019-06-30 01:27:07 +03:00
Aliaksandr Valialkin
72a3050c41
app/vmselect/promql: consistency renaming: candlestick -> rollup_candlestick
2019-06-29 03:13:25 +03:00
Aliaksandr Valialkin
96342f1422
app/vmselect: add candlestick(m[d]) func for returning open, close, low and high rollups on the given time range d
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This function is frequently used in financial apps. See https://en.wikipedia.org/wiki/Candlestick_chart
2019-06-27 18:46:54 +03:00
Aliaksandr Valialkin
d0bf4393a9
app/vmselect/promql: increase default value for -search.maxPointsPerTimeSeries from 10k to 30k
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This may be required for subqueries with small steps. See https://github.com/VictoriaMetrics/VictoriaMetrics/issues/77
2019-06-24 22:53:25 +03:00
Aliaksandr Valialkin
0eac538fc8
app/vmselect/promql: adjust the provided window only for range functions with dt in denominator
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This should fix range function calculations such as `changes(m[d])` where `d` is smaller
than the scrape interval.
Updates https://github.com/VictoriaMetrics/VictoriaMetrics/issues/72
2019-06-23 19:27:25 +03:00
Aliaksandr Valialkin
f334908c22
app/vmselect/promql: ajdust data model to the model used in Prometheus
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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 21:55:25 +03:00
Aliaksandr Valialkin
947bc16f8c
app/vmselect/promql: use dynamic limit on memory for concurrent queries
2019-06-12 23:18:23 +03:00
Aliaksandr Valialkin
bdf696ef18
all: fix misspellings
2019-05-25 21:51:24 +03:00
Aliaksandr Valialkin
24578b4bb1
all: open-sourcing cluster version
2019-05-23 00:25:38 +03:00
Aliaksandr Valialkin
1836c415e6
all: open-sourcing single-node version
2019-05-23 00:18:06 +03:00
