From 07c1b7e501e31fa6d20937afd0797f2aafb3c069 Mon Sep 17 00:00:00 2001
From: shaoyue <shaoyue.chen@zilliz.com>
Date: Mon, 20 Dec 2021 20:14:58 +0800
Subject: [PATCH] [skip e2e] Add comment for typeutil.AddOne (#13798)

Signed-off-by: shaoyue.chen <shaoyue.chen@zilliz.com>
---
 internal/util/typeutil/string_util.go | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/internal/util/typeutil/string_util.go b/internal/util/typeutil/string_util.go
index 41ad9cb871..ffc5c4f8d4 100644
--- a/internal/util/typeutil/string_util.go
+++ b/internal/util/typeutil/string_util.go
@@ -1,6 +1,7 @@
 package typeutil
 
-// Add one to string, add one on empty string return empty
+// AddOne add one to last byte in string, on empty string return empty
+// it helps with key iteration upper bound
 func AddOne(data string) string {
 	if len(data) == 0 {
 		return data