From eff7f21521ff010f8d7722e7279af3dcd83015f0 Mon Sep 17 00:00:00 2001
From: Zheng-Xian Li <garyparrottt@gmail.com>
Date: Thu, 18 Aug 2022 02:43:40 +0800
Subject: [PATCH] Address the issue of replication throttle in Kafka broker
 implementation (#594)

---
 .../org/astraea/app/admin/ReplicationThrottlerTest.java     | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/app/src/test/java/org/astraea/app/admin/ReplicationThrottlerTest.java b/app/src/test/java/org/astraea/app/admin/ReplicationThrottlerTest.java
index dd46b87899..db899e9266 100644
--- a/app/src/test/java/org/astraea/app/admin/ReplicationThrottlerTest.java
+++ b/app/src/test/java/org/astraea/app/admin/ReplicationThrottlerTest.java
@@ -31,6 +31,12 @@
 
 public class ReplicationThrottlerTest extends RequireBrokerCluster {
 
+  /**
+   * There is a bug in the Kafka broker implementation. This will cause the replication throttle to
+   * act unstable at the beginning of replication. For more details, see <a
+   * href="https://github.com/apache/kafka/pull/12528">this</a>. This test attempt to ensure the
+   * throttle works smoothly. It is disabled since it won't pass until the bug is resolved.
+   */
   @EnabledIfEnvironmentVariable(named = "RunReplicationThrottler", matches = "^yes$")
   @Test
   void runReplicationThrottler() {