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Add doc that plugins in binding cycle should not use NodeInfoSnapshot()

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Jun Gong 2019-07-23 20:24:36 +08:00
parent 55807b71ad
commit a3ed664246
1 changed files with 4 additions and 1 deletions
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5
pkg/scheduler/framework/v1alpha1/interface.go
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@ -306,7 +306,10 @@ type FrameworkHandle interface {
// NodeInfoSnapshot return the latest NodeInfo snapshot. The snapshot
// is taken at the beginning of a scheduling cycle and remains unchanged until
// a pod finishes "Reserve" point. There is no guarantee that the information
// remains unchanged in the binding phase of scheduling.
// remains unchanged in the binding phase of scheduling, so plugins in the binding
// cycle(permit/pre-bind/bind/post-bind/un-reserve plugin) should not use it,
// otherwise a concurrent read/write error might occur, they should use scheduler
// cache instead.
NodeInfoSnapshot() *internalcache.NodeInfoSnapshot
// IterateOverWaitingPods acquires a read lock and iterates over the WaitingPods map.