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app/vmselect/promql: increase the estimated number of time series returned by aggr() by (something) from 100 to 1K, since 100 may result in OOM for high number of time series

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This commit is contained in:
Aliaksandr Valialkin 2020-01-03 01:02:04 +02:00
parent cb3a342882
commit b5645ccbdf
1 changed files with 2 additions and 2 deletions
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4
app/vmselect/promql/eval.go
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@ -617,8 +617,8 @@ func evalRollupFuncWithMetricExpr(ec *EvalConfig, name string, rf rollupFunc, me
if iafc.ae.Modifier.Op != "" {
// Increase the number of timeseries for non-empty group list: `aggr() by (something)`,
// since each group can have own set of time series in memory.
// Estimate the number of such groups is lower than 100 :)
timeseriesLen *= 100
// Estimate the number of such groups is lower than 1000 :)
timeseriesLen *= 1000
}
}
rollupPoints := mulNoOverflow(pointsPerTimeseries, int64(timeseriesLen*len(rcs)))