ilm: Expect objects with only free versions when scanning (#21112)

cmd/data-scanner.go

@@ -1036,6 +1036,9 @@ type actionsAccountingFn func(oi ObjectInfo, sz, actualSz int64, sizeS *sizeSumm
 // The metadata will be compared to consensus on the object layer before any changes are applied.
 // If no metadata is supplied, -1 is returned if no action is taken.
 func (i *scannerItem) applyActions(ctx context.Context, objAPI ObjectLayer, objInfos []ObjectInfo, lr lock.Retention, sizeS *sizeSummary, fn actionsAccountingFn) {
+	if len(objInfos) == 0 {
+		return
+	}
 	healActions := func(oi ObjectInfo, actualSz int64) int64 {
 		size := actualSz
 		if i.heal.enabled {

cmd/data-scanner_test.go

@@ -245,6 +245,12 @@ func TestApplyNewerNoncurrentVersionsLimit(t *testing.T) {
 			wants:       nil,
 			wantExpired: []ObjectToDelete{{ObjectV: ObjectV{ObjectName: obj, VersionID: allVersExpObjInfos[0].VersionID}}},
 		},
+		{
+			// When no versions are present, in practice this could be an object with only free versions
+			objInfos:    nil,
+			wants:       nil,
+			wantExpired: nil,
+		},
 	}
 	for i, test := range tests {
 		t.Run(fmt.Sprintf("TestApplyNewerNoncurrentVersionsLimit-%d", i), func(t *testing.T) {