fix: npe when renew hiddenCollectors

jonyhy96 · k8s-publishing-bot · commit e11df2fd4989 · 2021-11-04T11:10:07.000+08:00
Signed-off-by: haoyun &lt;yun.hao@daocloud.io&gt;

Kubernetes-commit: 1a21a53f7e84e30915e15b4945ad08b5b3ca747b
diff --git a/metrics/registry.go b/metrics/registry.go
@@ -274,7 +274,7 @@ func (kr *kubeRegistry) enableHiddenCollectors() {
 		cs = append(cs, c)
 	}
 
-	kr.hiddenCollectors = nil
+	kr.hiddenCollectors = make(map[string]Registerable)
 	kr.hiddenCollectorsLock.Unlock()
 	kr.MustRegister(cs...)
 }

Original file line number	Diff line number	Diff line change
`@@ -274,7 +274,7 @@ func (kr *kubeRegistry) enableHiddenCollectors() {`
`274`	`274`	`cs = append(cs, c)`
`275`	`275`	`}`
`276`	`276`
`277`		`- kr.hiddenCollectors = nil`
	`277`	`+ kr.hiddenCollectors = make(map[string]Registerable)`
`278`	`278`	`kr.hiddenCollectorsLock.Unlock()`
`279`	`279`	`kr.MustRegister(cs...)`
`280`	`280`	`}`