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Check ref value when appending staleness markers

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Signed-off-by: Lukasz Mierzwa <l.mierzwa@gmail.com>
This commit is contained in:
Lukasz Mierzwa 2025-04-14 15:48:25 +01:00
parent 872f03766c
commit 0eedc046f4
1 changed files with 3 additions and 1 deletions
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4
scrape/target.go
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@ -332,7 +332,9 @@ type limitAppender struct {
}
func (app *limitAppender) Append(ref storage.SeriesRef, lset labels.Labels, t int64, v float64) (storage.SeriesRef, error) {
if !value.IsStaleNaN(v) {
// Bypass sample_limit checks only if we have a staleness marker for a known series (ref value is non-zero).
// This ensures that if a series is already in TSDB then we always write the marker.
if ref == 0 || !value.IsStaleNaN(v) {
app.i++
if app.i > app.limit {
return 0, errSampleLimit