From b490846d243294ee2ee5a838603ffbcfc013b653 Mon Sep 17 00:00:00 2001
From: Sven Rebhan <36194019+srebhan@users.noreply.github.com>
Date: Thu, 1 May 2025 13:28:27 -0500
Subject: [PATCH] fix(common.ratelimiter): Only grow the buffer but never
 shrink (#16868)

---
 plugins/common/ratelimiter/serializers.go | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/plugins/common/ratelimiter/serializers.go b/plugins/common/ratelimiter/serializers.go
index 6bd6ce78e..f3f0c632b 100644
--- a/plugins/common/ratelimiter/serializers.go
+++ b/plugins/common/ratelimiter/serializers.go
@@ -51,7 +51,7 @@ func (s *IndividualSerializer) SerializeBatch(metrics []telegraf.Metric, limit i
 	// Grow the buffer so it can hold at least the required size. This will
 	// save us from reallocate often
 	s.buffer.Reset()
-	if limit > 0 && limit < int64(math.MaxInt) {
+	if limit > 0 && limit > int64(s.buffer.Cap()) && limit < int64(math.MaxInt) {
 		s.buffer.Grow(int(limit))
 	}