DeltaFIFO should not report HasSynced until deletes are reported

Deletions identified by knownObjects on the initial sync replace
(immediately after the List from a reflector) should be considered part
of the initial sync since we have the information available at the time
we do the deletion.

An error during Replace() can result in Populated not being set, but it
was incorrect before (population would be wrong) and queueActionLocked
does not error except on "my cache is broken because I gave an incorrect
keyFunc".

pkg/client/cache/delta_fifo.go

@@ -437,11 +437,6 @@ func (f *DeltaFIFO) Replace(list []interface{}, resourceVersion string) error {
 	defer f.lock.Unlock()
 	keys := make(sets.String, len(list))
 
-	if !f.populated {
-		f.populated = true
-		f.initialPopulationCount = len(list)
-	}
-
 	for _, item := range list {
 		key, err := f.KeyOf(item)
 		if err != nil {
@@ -467,6 +462,12 @@ func (f *DeltaFIFO) Replace(list []interface{}, resourceVersion string) error {
 				return err
 			}
 		}
+
+		if !f.populated {
+			f.populated = true
+			f.initialPopulationCount = len(list)
+		}
+
 		return nil
 	}
 
@@ -474,6 +475,7 @@ func (f *DeltaFIFO) Replace(list []interface{}, resourceVersion string) error {
 	// TODO(lavalamp): This may be racy-- we aren't properly locked
 	// with knownObjects. Unproven.
 	knownKeys := f.knownObjects.ListKeys()
+	queuedDeletions := 0
 	for _, k := range knownKeys {
 		if keys.Has(k) {
 			continue
@@ -487,10 +489,17 @@ func (f *DeltaFIFO) Replace(list []interface{}, resourceVersion string) error {
 			deletedObj = nil
 			glog.Infof("Key %v does not exist in known objects store, placing DeleteFinalStateUnknown marker without object", k)
 		}
+		queuedDeletions++
 		if err := f.queueActionLocked(Deleted, DeletedFinalStateUnknown{k, deletedObj}); err != nil {
 			return err
 		}
 	}
+
+	if !f.populated {
+		f.populated = true
+		f.initialPopulationCount = len(list) + queuedDeletions
+	}
+
 	return nil
 }