Kiu/VictoriaMetrics
Kiu/VictoriaMetrics
1
0
Fork 0
mirror of https://github.com/VictoriaMetrics/VictoriaMetrics.git synced 2024-12-15 08:23:34 +01:00
Code Issues Actions 1 Packages Projects Releases Wiki Activity

app/vmselect/promql: substitute rollupFuncsCannotAdjustWindow with rollupFuncsCanAdjustWindow

Browse Source 
The list of functions, which can adjust lookbehind window is more limited than the rest of functions,
so it is better from maintainability and readability PoV using the allowlist instead of blocklist.
This commit is contained in:
Aliaksandr Valialkin 2021-10-07 13:17:20 +03:00
parent 7e6ec0bbe9
commit cbf01f7384
No known key found for this signature in database
GPG Key ID: A72BEC6CD3D0DED1
1 changed files with 21 additions and 32 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

53
app/vmselect/promql/rollup.go
View File

@ -145,37 +145,26 @@ var rollupAggrFuncs = map[string]rollupFunc{
"rate_over_sum": rollupRateOverSum,
}
var rollupFuncsCannotAdjustWindow = map[string]bool{
"changes": true,
"delta": true,
"holt_winters": true,
"idelta": true,
"increase": true,
"predict_linear": true,
"resets": true,
"avg_over_time": true,
"sum_over_time": true,
"count_over_time": true,
"quantile_over_time": true,
"quantiles_over_time": true,
"stddev_over_time": true,
"stdvar_over_time": true,
"absent_over_time": true,
"present_over_time": true,
"sum2_over_time": true,
"geomean_over_time": true,
"distinct_over_time": true,
"increases_over_time": true,
"decreases_over_time": true,
"increase_pure": true,
"integrate": true,
"ascent_over_time": true,
"descent_over_time": true,
"zscore_over_time": true,
"first_over_time": true,
"last_over_time": true,
"min_over_time": true,
"max_over_time": true,
// VictoriaMetrics can increase lookbehind window in square brackets for these functions
// if the given window doesn't contain enough samples for calculations.
//
// This is needed in order to return the expected non-empty graphs when zooming in the graph in Grafana,
// which is built with `func_name(metric[$__interval])` query.
var rollupFuncsCanAdjustWindow = map[string]bool{
"default_rollup": true,
"deriv": true,
"deriv_fast": true,
"ideriv": true,
"irate": true,
"rate": true,
"rate_over_sum": true,
"rollup": true,
"rollup_candlestick": true,
"rollup_deriv": true,
"rollup_rate": true,
"rollup_scrape_interval": true,
"scrape_interval": true,
"timestamp": true,
}
var rollupFuncsRemoveCounterResets = map[string]bool{
@ -287,7 +276,7 @@ func getRollupConfigs(name string, rf rollupFunc, expr metricsql.Expr, start, en
End: end,
Step: step,
Window: window,
MayAdjustWindow: !rollupFuncsCannotAdjustWindow[name],
MayAdjustWindow: rollupFuncsCanAdjustWindow[name],
LookbackDelta: lookbackDelta,
Timestamps: sharedTimestamps,
isDefaultRollup: name == "default_rollup",