liangyepianzhou commented on code in PR #19086:
URL: https://github.com/apache/pulsar/pull/19086#discussion_r1058110386


##########
pulsar-broker/src/main/java/org/apache/pulsar/broker/service/BrokerService.java:
##########
@@ -1016,27 +1016,27 @@ public CompletableFuture<Optional<Topic>> 
getTopic(final TopicName topicName, bo
                 }
             }
             final boolean isPersistentTopic = 
topicName.getDomain().equals(TopicDomain.persistent);
-            if (isPersistentTopic) {
-                return topics.computeIfAbsent(topicName.toString(), (k) -> {
-                    return this.loadOrCreatePersistentTopic(k, 
createIfMissing, properties);
-                });
-            } else {
-                return topics.computeIfAbsent(topicName.toString(), (name) -> {
+            return topics.computeIfAbsent(topicName.toString(), (name) -> {
+                    // partitioned topic
                     if (topicName.isPartitioned()) {
                         final TopicName partitionedTopicName = 
TopicName.get(topicName.getPartitionedTopicName());
-                        return 
this.fetchPartitionedTopicMetadataAsync(partitionedTopicName).thenCompose((metadata)
 -> {
+                        return 
fetchPartitionedTopicMetadataAsync(partitionedTopicName).thenCompose((metadata) 
-> {
                             if (topicName.getPartitionIndex() < 
metadata.partitions) {
-                                return createNonPersistentTopic(name);
+                                return isPersistentTopic ?
+                                        loadOrCreatePersistentTopic(name, 
createIfMissing, properties) :

Review Comment:
   Good work! I just have a little question.
   If the `partitionIndex` is 0 and the metadata can not be found, what will 
happen here?



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