From 39364b9654311eb2cbde1ea6f4d7d4b724156c9c Mon Sep 17 00:00:00 2001
From: ken <1647023764@qq.com>
Date: Thu, 19 Oct 2023 10:18:12 +0800
Subject: [PATCH] [fix][broker] Fix heartbeat namespace create transaction
 internal topic (#21348)

---
 .../service/persistent/PersistentTopic.java   |  3 ++-
 .../systopic/PartitionedSystemTopicTest.java  | 19 +++++++++++++++++++
 2 files changed, 21 insertions(+), 1 deletion(-)

diff --git a/pulsar-broker/src/main/java/org/apache/pulsar/broker/service/persistent/PersistentTopic.java b/pulsar-broker/src/main/java/org/apache/pulsar/broker/service/persistent/PersistentTopic.java
index 1bfe55cf74c29..a090aa1bf2565 100644
--- a/pulsar-broker/src/main/java/org/apache/pulsar/broker/service/persistent/PersistentTopic.java
+++ b/pulsar-broker/src/main/java/org/apache/pulsar/broker/service/persistent/PersistentTopic.java
@@ -305,7 +305,8 @@ public PersistentTopic(String topic, ManagedLedger ledger, BrokerService brokerS
 
         TopicName topicName = TopicName.get(topic);
         if (brokerService.getPulsar().getConfiguration().isTransactionCoordinatorEnabled()
-                && !isEventSystemTopic(topicName)) {
+                && !isEventSystemTopic(topicName)
+                && !NamespaceService.isHeartbeatNamespace(topicName.getNamespaceObject())) {
             this.transactionBuffer = brokerService.getPulsar()
                     .getTransactionBufferProvider().newTransactionBuffer(this);
         } else {
diff --git a/pulsar-broker/src/test/java/org/apache/pulsar/broker/systopic/PartitionedSystemTopicTest.java b/pulsar-broker/src/test/java/org/apache/pulsar/broker/systopic/PartitionedSystemTopicTest.java
index 4af0bd9052391..42d941e616809 100644
--- a/pulsar-broker/src/test/java/org/apache/pulsar/broker/systopic/PartitionedSystemTopicTest.java
+++ b/pulsar-broker/src/test/java/org/apache/pulsar/broker/systopic/PartitionedSystemTopicTest.java
@@ -81,6 +81,7 @@ protected void setup() throws Exception {
         conf.setDefaultNumPartitions(PARTITIONS);
         conf.setManagedLedgerMaxEntriesPerLedger(1);
         conf.setBrokerDeleteInactiveTopicsEnabled(false);
+        conf.setTransactionCoordinatorEnabled(true);
 
         super.baseSetup();
     }
@@ -207,6 +208,24 @@ public void testHeartbeatTopicNotAllowedToSendEvent() throws Exception {
         });
     }
 
+    @Test
+    public void testHeartbeatNamespaceNotCreateTransactionInternalTopic() throws Exception {
+        admin.brokers().healthcheck(TopicVersion.V2);
+        NamespaceName namespaceName = NamespaceService.getHeartbeatNamespaceV2(pulsar.getLookupServiceAddress(),
+                pulsar.getConfig());
+        TopicName topicName = TopicName.get("persistent",
+                namespaceName, SystemTopicNames.TRANSACTION_BUFFER_SNAPSHOT);
+        Optional<Topic> optionalTopic = pulsar.getBrokerService()
+                .getTopic(topicName.getPartition(1).toString(), false).join();
+        Assert.assertTrue(optionalTopic.isEmpty());
+
+        List<String> topics = getPulsar().getNamespaceService().getListOfPersistentTopics(namespaceName).join();
+        Assert.assertEquals(topics.size(), 1);
+        TopicName heartbeatTopicName = TopicName.get("persistent",
+                namespaceName, BrokersBase.HEALTH_CHECK_TOPIC_SUFFIX);
+        Assert.assertEquals(topics.get(0), heartbeatTopicName.toString());
+    }
+
     @Test
     public void testSetBacklogCausedCreatingProducerFailure() throws Exception {
         final String ns = "prop/ns-test";