From 824d8d521b67de8890fe5bac362c62ed47dab1db Mon Sep 17 00:00:00 2001
From: Pavel <177363085+pkcll@users.noreply.github.com>
Date: Tue, 9 Jun 2026 01:52:51 -0400
Subject: [PATCH] fix(chipingress): set explicit bucket boundaries for
 request_size_bytes   histogram

---
 pkg/chipingress/batch/client.go | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/pkg/chipingress/batch/client.go b/pkg/chipingress/batch/client.go
index 42f9c437d5..90c3bca980 100644
--- a/pkg/chipingress/batch/client.go
+++ b/pkg/chipingress/batch/client.go
@@ -547,6 +547,12 @@ func newBatchClientMetrics() (batchClientMetrics, error) {
 		"chip_ingress.batch.request_size_bytes",
 		otelmetric.WithDescription("PublishBatch request size measured in bytes"),
 		otelmetric.WithUnit("By"),
+		otelmetric.WithExplicitBucketBoundaries(
+			// Buckets from 1 KiB to 10 MiB (default maxGRPCRequestSize).
+			1*1024, 4*1024, 16*1024, 64*1024, 256*1024,
+			512*1024, 1*1024*1024, 2*1024*1024, 4*1024*1024,
+			8*1024*1024, 10*1024*1024,
+		),
 	)
 	if err != nil {
 		return batchClientMetrics{}, err