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app/vmselect/prometheus: do not include datapoints with timestamps matching t-d when returning results from /api/v1/query?query=m[d]&time=t as Prometheus does

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This commit is contained in:
Aliaksandr Valialkin 2021-03-12 12:16:50 +02:00
parent a12d2013d5
commit b6dcb37fca
2 changed files with 6 additions and 0 deletions
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5
app/vmselect/prometheus/prometheus.go
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@ -1034,6 +1034,11 @@ func QueryHandler(startTime time.Time, at *auth.Token, w http.ResponseWriter, r
start -= offset
end := start
start = end - window
// Do not include data point with a timestamp matching the lower boundary of the window as Prometheus does.
start++
if end < start {
end = start
}
if err := exportHandler(at, w, r, []string{childQuery}, etf, start, end, "promapi", 0, false, deadline); err != nil {
return fmt.Errorf("error when exporting data for query=%q on the time range (start=%d, end=%d): %w", childQuery, start, end, err)
}

1
docs/CHANGELOG.md
View file

@ -20,6 +20,7 @@
* BUGFIX: vmagent: properly scrape targets via https proxy specified in `proxy_url` if `insecure_skip_verify` flag isn't set in `tls_config` section. See https://github.com/VictoriaMetrics/VictoriaMetrics/issues/1116
* BUGFUX: avoid `duplicate time series` error if `prometheus_buckets()` covers a time range with distinct set of buckets.
* BUGFIX: prevent exponent overflow when processing extremely small values close to zero such as `2.964393875E-314`. See https://github.com/VictoriaMetrics/VictoriaMetrics/issues/1114
* BUGFIX: do not include datapoints with a timestamp `t-d` when returning results from `/api/v1/query?query=m[d]&time=t` as Prometheus does.
# [v1.55.1](https://github.com/VictoriaMetrics/VictoriaMetrics/releases/tag/v1.55.1)