From b153e61f0dd52fd17b62e5be3d8816cb85243970 Mon Sep 17 00:00:00 2001
From: elegance code <webdevelop@live.com>
Date: Fri, 16 May 2025 15:03:01 +0800
Subject: [PATCH] fix issue #5401 (#5402)

---
 .../connector/rocketmq/producer/CanalRocketMQProducer.java    | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/connector/rocketmq-connector/src/main/java/com/alibaba/otter/canal/connector/rocketmq/producer/CanalRocketMQProducer.java b/connector/rocketmq-connector/src/main/java/com/alibaba/otter/canal/connector/rocketmq/producer/CanalRocketMQProducer.java
index 2f174557..eb478c95 100644
--- a/connector/rocketmq-connector/src/main/java/com/alibaba/otter/canal/connector/rocketmq/producer/CanalRocketMQProducer.java
+++ b/connector/rocketmq-connector/src/main/java/com/alibaba/otter/canal/connector/rocketmq/producer/CanalRocketMQProducer.java
@@ -372,6 +372,10 @@ public class CanalRocketMQProducer extends AbstractMQProducer implements CanalMQ
             topicName = this.defaultMQProducer.withNamespace(topicName);
             DefaultMQProducerImpl innerProducer = this.defaultMQProducer.getDefaultMQProducerImpl();
             TopicPublishInfo topicInfo = innerProducer.getTopicPublishInfoTable().get(topicName);
+            if (topicInfo == null) {
+                innerProducer.getMqClientFactory().updateTopicRouteInfoFromNameServer(topicName);
+            }
+            topicInfo = innerProducer.getTopicPublishInfoTable().get(topicName);
             if (topicInfo == null) {
                 return null;
             } else {