TrueCloudLab/frostfs-node
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[#2037] services/object: Fix concurrent map writes in traverser

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```
fatal error: concurrent map writes

goroutine 4337 [running]:
github.com/nspcc-dev/neofs-node/pkg/services/object/put.(*traversal).submitProcessed(...)
        github.com/nspcc-dev/neofs-node/pkg/services/object/put/distributed.go:78
github.com/nspcc-dev/neofs-node/pkg/services/object/put.(*distributedTarget).iteratePlacement.func1()
        github.com/nspcc-dev/neofs-node/pkg/services/object/put/distributed.go:198 +0x265
github.com/panjf2000/ants/v2.(*goWorker).run.func1()
        github.com/panjf2000/ants/v2@v2.4.0/worker.go:68 +0x97
created by github.com/panjf2000/ants/v2.(*goWorker).run
        github.com/panjf2000/ants/v2@v2.4.0/worker.go:48 +0x65
```

Signed-off-by: Evgenii Stratonikov <evgeniy@morphbits.ru>
This commit is contained in:
Evgenii Stratonikov 2022-11-10 09:48:46 +03:00 committed by fyrchik
parent 37f813604f
commit 2522d924b9
2 changed files with 12 additions and 2 deletions
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1
CHANGELOG.md
View file

@ -21,6 +21,7 @@ Changelog for NeoFS Node
- `neofs-cli lock object`'s `lifetime` flag handling (#1972)
- Do not move write-cache in read-only mode for flushing (#1906)
- Child object collection on CLI side with a bearer token (#2000)
- Fix concurrent map writes in `Object.Put` service
### Removed
### Updated

13
pkg/services/object/put/distributed.go
View file

@ -48,6 +48,9 @@ type traversal struct {
// need of additional broadcast after the object is saved
extraBroadcastEnabled bool
// mtx protects mExclude map.
mtx sync.RWMutex
// container nodes which was processed during the primary object placement
mExclude map[string]struct{}
}
@ -71,17 +74,23 @@ func (x *traversal) submitPrimaryPlacementFinish() bool {
// marks the container node as processed during the primary object placement.
func (x *traversal) submitProcessed(n placement.Node) {
if x.extraBroadcastEnabled {
key := string(n.PublicKey())
x.mtx.Lock()
if x.mExclude == nil {
x.mExclude = make(map[string]struct{}, 1)
}
x.mExclude[string(n.PublicKey())] = struct{}{}
x.mExclude[key] = struct{}{}
x.mtx.Unlock()
}
}
// checks if specified node was processed during the primary object placement.
func (x traversal) processed(n placement.Node) bool {
func (x *traversal) processed(n placement.Node) bool {
x.mtx.RLock()
_, ok := x.mExclude[string(n.PublicKey())]
x.mtx.RUnlock()
return ok
}