From d93967564105b51e85665b3945f1eb663d914c61 Mon Sep 17 00:00:00 2001
From: Kirk True <kirk@kirktrue.pro>
Date: Mon, 6 Oct 2025 16:49:22 -0700
Subject: [PATCH] Added comment to NetworkClientDelegate.doSend() change

---
 .../kafka/clients/consumer/internals/NetworkClientDelegate.java | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/clients/src/main/java/org/apache/kafka/clients/consumer/internals/NetworkClientDelegate.java b/clients/src/main/java/org/apache/kafka/clients/consumer/internals/NetworkClientDelegate.java
index 772ca911d11..ca0492e39b5 100644
--- a/clients/src/main/java/org/apache/kafka/clients/consumer/internals/NetworkClientDelegate.java
+++ b/clients/src/main/java/org/apache/kafka/clients/consumer/internals/NetworkClientDelegate.java
@@ -212,6 +212,8 @@ public class NetworkClientDelegate implements AutoCloseable {
         if (!client.ready(node, currentTimeMs)) {
             AuthenticationException authenticationException = client.authenticationException(node);
 
+            // The client may not be ready because it hit an unrecoverable authentication error. In that case, there's
+            // no benefit from retrying, so propagate the error here.
             if (authenticationException != null) {
                 request.callback().onComplete(
                     new ClientResponse(