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Prevent garbage collector from attempting to sync with 0 resources

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This commit is contained in:
jennybuckley 2018-03-16 11:44:09 -07:00
parent 68e2a96016
commit 455c6fb049
1 changed files with 8 additions and 0 deletions
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8
pkg/controller/garbagecollector/garbagecollector.go
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@ -172,6 +172,14 @@ func (gc *GarbageCollector) Sync(discoveryClient discovery.ServerResourcesInterf
// Get the current resource list from discovery.
newResources := GetDeletableResources(discoveryClient)
// This can occur if there is an internal error in GetDeletableResources.
// If the gc attempts to sync with 0 resources it will block forever.
// TODO: Implement a more complete solution for the garbage collector hanging.
if len(newResources) == 0 {
glog.V(5).Infof("no resources reported by discovery, skipping garbage collector sync")
return
}
// Decide whether discovery has reported a change.
if reflect.DeepEqual(oldResources, newResources) {
glog.V(5).Infof("no resource updates from discovery, skipping garbage collector sync")