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Merge pull request #75760 from wojtek-t/follow_comment_from_critical_sections 

Add explanation about forgetFunc in cacher
k3s-v1.15.3
Kubernetes Prow Robot 2019-03-27 18:41:26 -07:00 committed by GitHub
parent a519e91256 605522b0c7
commit 312eb890e6
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staging/src/k8s.io/apiserver/pkg/storage/cacher/cacher.go
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@ -365,6 +365,8 @@ func (c *Cacher) Watch(ctx context.Context, key string, resourceVersion string,
// Create a watcher here to reduce memory allocations under lock,
// given that memory allocation may trigger GC and block the thread.
// Also note that emptyFunc is a placeholder, until we will be able
// to compute watcher.forget function (which has to happen under lock).
watcher := newCacheWatcher(chanSize, filterWithAttrsFunction(key, pred), emptyFunc, c.versioner)
// We explicitly use thread unsafe version and do locking ourself to ensure that