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Add hedged request to Store Gateway #6388

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SungJin1212
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This PR adds hedged requests to Store Gateway. It can reduce the tail latency between Store Gateway and Object store.

Which issue(s) this PR fixes:
Fixes #6343

Checklist

  • Tests updated
  • Documentation added
  • CHANGELOG.md updated - the order of entries should be [CHANGE], [FEATURE], [ENHANCEMENT], [BUGFIX]

pkg/storegateway/gateway.go Outdated Show resolved Hide resolved
@SungJin1212 SungJin1212 force-pushed the Add-hedged-request-to-Store-Gateway branch from b5378b2 to 3994384 Compare December 3, 2024 02:30
@SungJin1212 SungJin1212 requested a review from yeya24 December 3, 2024 02:53
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Looks good. Just a small nit

pkg/storegateway/gateway.go Outdated Show resolved Hide resolved
@SungJin1212 SungJin1212 force-pushed the Add-hedged-request-to-Store-Gateway branch 2 times, most recently from c595c0f to cbd4232 Compare December 3, 2024 04:33
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@friedrichg friedrichg left a comment

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LGTM Only a minor typo!

pkg/storage/bucket/hedged_reqeust_test.go Outdated Show resolved Hide resolved
@dosubot dosubot bot added the lgtm This PR has been approved by a maintainer label Dec 3, 2024
@SungJin1212 SungJin1212 force-pushed the Add-hedged-request-to-Store-Gateway branch from cbd4232 to dca3507 Compare December 3, 2024 11:26
@yeya24 yeya24 merged commit 91ff8b4 into cortexproject:master Dec 3, 2024
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hrt.mu.Lock()
err = hrt.TDigest.Add(duration)
if err != nil {
return nil, err
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Potential deadlock here

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Thanks, I made a PR here thanos-io/thanos#7962.
cc. @yeya24

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Thanks for the catch! @damnever

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Store Gateway: Support hedged requests to object store
4 participants