diff --git a/internal/indexcoord/meta_table.go b/internal/indexcoord/meta_table.go
index 94415e6c7e..5cc4383508 100644
--- a/internal/indexcoord/meta_table.go
+++ b/internal/indexcoord/meta_table.go
@@ -277,6 +277,7 @@ func (mt *metaTable) MarkIndexAsDeleted(indexID UniqueID) error {
 	return nil
 }
 
+// GetIndexStates gets the index states from meta table.
 func (mt *metaTable) GetIndexStates(indexBuildIDs []UniqueID) []*indexpb.IndexInfo {
 	mt.lock.Lock()
 	defer mt.lock.Unlock()