Kiu/VictoriaMetrics
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lib/storage: properly update link for entry at dateMetricID cache (#4258)

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previously during sync for mutable and immutable cache parts, link for hotEntry with current date may be not properly updated
it corrupts cache for backfilling metrics and increased cpu load
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Nikolay 2023-05-06 06:45:47 +02:00 committed by GitHub
parent 4e71003620
commit 8f4de6fa47
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1 changed files with 5 additions and 1 deletions
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6
lib/storage/storage.go
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@ -2162,10 +2162,14 @@ func (dmc *dateMetricIDCache) syncLocked() {
}
v = v.Clone()
v.Union(&e.v)
byDateMutable.m[date] = &byDateMetricIDEntry{
dme := &byDateMetricIDEntry{
date: date,
v: *v,
}
if date == byDateMutable.hotEntry.Load().(*byDateMetricIDEntry).date {
byDateMutable.hotEntry.Store(dme)
}
byDateMutable.m[date] = dme
}
for date, e := range byDate.m {
v := byDateMutable.get(date)