cmccabe commented on code in PR #18708:
URL: https://github.com/apache/kafka/pull/18708#discussion_r1931352833


##########
metadata/src/main/java/org/apache/kafka/image/TopicsDelta.java:
##########
@@ -94,6 +97,25 @@ public void replay(PartitionChangeRecord record) {
         topicDelta.replay(record);
     }
 
+    public void replay(ClearElrRecord record) {
+        if (!record.topicName().isEmpty()) {
+            Uuid topicId;
+            if (image.getTopic(record.topicName()) != null) {
+                topicId = image.getTopic(record.topicName()).id();
+            } else {
+                topicId = createdTopics.get(record.topicName());

Review Comment:
   we should handle the case where the topic ID can't be found (by throwing a 
`RuntimeException` exception explaining what happened). Obviously this is not 
expected but we should try to make it easier to diagnose the problem.



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