prat0318 commented on a change in pull request #11552:
URL: https://github.com/apache/kafka/pull/11552#discussion_r759881263
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File path: clients/src/test/java/org/apache/kafka/clients/MetadataTest.java
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@@ -381,13 +381,12 @@ public void testEpochUpdateOnChangedTopicIds() {
metadata.updateWithCurrentRequestVersion(metadataResponse, false, 0L);
// Start with a topic with no topic ID
- metadataResponse = RequestTestUtils.metadataUpdateWith("dummy", 1,
Collections.emptyMap(), Collections.singletonMap("topic-1", 1), _tp -> 10);
+ metadataResponse = RequestTestUtils.metadataUpdateWith("dummy", 1,
Collections.emptyMap(), Collections.singletonMap("topic-1", 1), _tp -> 100);
metadata.updateWithCurrentRequestVersion(metadataResponse, false, 1L);
- assertEquals(Optional.of(10), metadata.lastSeenLeaderEpoch(tp));
+ assertEquals(Optional.of(100), metadata.lastSeenLeaderEpoch(tp));
- // We should treat an added topic ID as though it is the same topic.
Handle only when epoch increases.
- // Don't update to an older one
- metadataResponse = RequestTestUtils.metadataUpdateWithIds("dummy", 1,
Collections.emptyMap(), Collections.singletonMap("topic-1", 1), _tp -> 1,
topicIds);
+ // If the Older topic Id is null, we should go with the new TopicId as
the leader Epoch
Review comment:
added a new testcase with the suggested flow. Old test-case still needs
to be changed as that case fails now, so modified the case as per the new
changes.
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