kevin-wu24 commented on code in PR #20242:
URL: https://github.com/apache/kafka/pull/20242#discussion_r2301695264
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metadata/src/main/java/org/apache/kafka/image/TopicsDelta.java:
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@@ -136,6 +136,7 @@ public String replay(RemoveTopicRecord record) {
String topicName;
if (topicDelta != null) {
topicName = topicDelta.image().name();
+ createdTopics.remove(topicName);
Review Comment:
Apologies, this previous comment is incorrect. If a `TopicRecord` and
`RemoveTopicRecord` are ever replayed in the same delta for a topic with ID = X
before `apply()` is called, ID X should not be present in `deletedTopicIds`,
since it doesn't exist in the previous `image` or in the current
`changedTopics` after being removed on L135 (it would throw an exception in
apply()). It is sufficient to remove it from the `createdTopics` map.
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