dajac commented on a change in pull request #11552:
URL: https://github.com/apache/kafka/pull/11552#discussion_r770355553
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File path: clients/src/test/java/org/apache/kafka/clients/MetadataTest.java
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@@ -372,6 +372,30 @@ public void testUpdateLastEpoch() {
assertOptional(metadata.lastSeenLeaderEpoch(tp), leaderAndEpoch ->
assertEquals(leaderAndEpoch.intValue(), 12));
}
+ @Test
+ public void testEpochUpdateAfterTopicDeletion() {
+ TopicPartition tp = new TopicPartition("topic-1", 0);
+
+ MetadataResponse metadataResponse = emptyMetadataResponse();
+ metadata.updateWithCurrentRequestVersion(metadataResponse, false, 0L);
+
+ Map<String, Uuid> topicIds = Collections.singletonMap("topic-1",
Uuid.randomUuid());
+ metadataResponse = RequestTestUtils.metadataUpdateWithIds("dummy", 1,
Collections.emptyMap(), Collections.singletonMap("topic-1", 1), _tp -> 10,
topicIds);
+ metadata.updateWithCurrentRequestVersion(metadataResponse, false, 1L);
+ assertEquals(Optional.of(10), metadata.lastSeenLeaderEpoch(tp));
+
+ // Topic topic-1 is now deleted so Response contains an Error.
LeaderEpoch should still maintain Old value
+ metadataResponse = RequestTestUtils.metadataUpdateWith("dummy", 1,
Collections.singletonMap("topic-1", Errors.UNKNOWN_TOPIC_OR_PARTITION),
Collections.emptyMap());
+ metadata.updateWithCurrentRequestVersion(metadataResponse, false, 1L);
+ assertEquals(Optional.of(10), metadata.lastSeenLeaderEpoch(tp));
+
+ // Create topic-1 again but this time with a topic ID bar. LeaderEpoch
should be updated to new even if lower.
Review comment:
nit: `Create topic-1 again but this time with a topic ID.`?
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