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lib/promscrape: fix possible deadlock in parallel execution of target relabeling

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This commit is contained in:
Aliaksandr Valialkin 2021-02-28 16:05:13 +02:00
parent 68a0f5ce12
commit 59a31171e3
1 changed files with 2 additions and 2 deletions
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4
lib/promscrape/config.go
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@ -611,9 +611,9 @@ func appendScrapeWorkForTargetLabels(dst []*ScrapeWork, swc *scrapeWorkConfig, t
sw *ScrapeWork sw *ScrapeWork
err error err error
} }
resultCh := make(chan result)
workCh := make(chan map[string]string)
goroutines := cgroup.AvailableCPUs() goroutines := cgroup.AvailableCPUs()
resultCh := make(chan result, len(targetLabels))
workCh := make(chan map[string]string, goroutines)
for i := 0; i < goroutines; i++ { for i := 0; i < goroutines; i++ {
go func() { go func() {
for metaLabels := range workCh { for metaLabels := range workCh {