receiver: avoid race of hashring#1371
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brancz merged 1 commit intothanos-io:masterfrom Aug 5, 2019
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@squat PTAL |
squat
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Aug 5, 2019
pkg/receive/handler.go
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| defer h.mtx.Unlock() | ||
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| if hashring == nil { | ||
| atomic.StoreUint32(&h.hashringReady, 0) |
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Now that we have introduced a new syncronization mechanism, we can get rid of the hashringReady field, which we were accessing atomically to determine hashring readiness. Instead, isReady can do a RLock, e.g.
h.mtx.RLock()
hr := h.Hashring != nil
h.mtx.RUnlock()
return sr > 0 && hr
squat
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Aug 5, 2019
pkg/receive/handler.go
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| // It is possible that hashring is ready in testReady() but become unready now, | ||
| // so we need to lock here. | ||
| if h.hashring == nil { | ||
| h.mtx.RLock() |
squat
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Aug 5, 2019
| replicas := make(map[string]replica) | ||
| var i uint64 | ||
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| h.mtx.RLock() |
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Just for clarity, plz move this locking below the comment.
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Aug 5, 2019
| wreqs := make(map[string]*prompb.WriteRequest) | ||
| replicas := make(map[string]replica) | ||
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| h.mtx.RLock() |
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Let's move this below the comment.
Signed-off-by: YaoZengzeng <yaozengzeng@zju.edu.cn>
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@squat Updated. |
squat
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Aug 5, 2019
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cc @brancz for approval and merge |
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Aug 5, 2019
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Thanks a lot for finding and fixing this @YaoZengzeng! |
paulfantom
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Aug 7, 2019
* master: iter.go: error message typo correction (thanos-io#1376) Fix usage of $GOPATH in Makefile (thanos-io#1379) Moved Prometheus 2.11.1 and TSDB to 0.9.1 (thanos-io#1380) Store latest config hash and timestamp as metrics (thanos-io#1378) pkg/receive/handler.go: log errors (thanos-io#1372) receive: Hash-ring metrics (thanos-io#1363) receiver: avoid race of hashring (thanos-io#1371) feat compact: added readiness Prober (thanos-io#1297) Add changelog entry for S3 option (thanos-io#1361) Multipart features (thanos-io#1358) Added katacoda.yaml (thanos-io#1359) Remove deprecated option from example (thanos-io#1351) Move suggestion about admin API to appropriate place (thanos-io#1355)
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Signed-off-by: YaoZengzeng yaozengzeng@zju.edu.cn