diff --git a/internal/indexcoord/task.go b/internal/indexcoord/task.go
index 635ade54c8..6bf6bbdee6 100644
--- a/internal/indexcoord/task.go
+++ b/internal/indexcoord/task.go
@@ -36,7 +36,7 @@ type task interface {
 	Ctx() context.Context
 	ID() UniqueID       // return ReqID
 	SetID(uid UniqueID) // set ReqID
-	Name() string
+	Name() string // set task name
 	PreExecute(ctx context.Context) error
 	Execute(ctx context.Context) error
 	PostExecute(ctx context.Context) error