frankvicky commented on code in PR #19223:
URL: https://github.com/apache/kafka/pull/19223#discussion_r2011192553
##########
core/src/test/scala/unit/kafka/server/AbstractFetcherThreadTest.scala:
##########
@@ -1153,4 +1153,28 @@ class AbstractFetcherThreadTest {
assertTrue(fetcher.fetchState(unknownPartition).isEmpty)
}
-}
+ @Test
+ def testIgnoreFetchResponseWhenLeaderEpochChanged(): Unit = {
+ val newEpoch = 1
+ val initEpoch = 0
+
+ val partition = new TopicPartition("topic", 0)
+ val mockLeaderEndpoint = new MockLeaderEndPoint(version = version)
+ val mockTierStateMachine = new MockTierStateMachine(mockLeaderEndpoint)
+ val fetcher = new MockFetcherThread(mockLeaderEndpoint,
mockTierStateMachine)
+ val replicaState = PartitionState(leaderEpoch = newEpoch)
+ fetcher.setReplicaState(partition, replicaState)
+ val initFetchState = initialFetchState(topicIds.get(partition.topic), 0L,
leaderEpoch = newEpoch)
+ fetcher.addPartitions(Map(partition -> initFetchState))
+
+ val batch = mkBatch(baseOffset = 0L, leaderEpoch = 0, new
SimpleRecord("a".getBytes))
+ val leaderState = PartitionState(Seq(batch), leaderEpoch = initEpoch,
highWatermark = 1L)
+ fetcher.mockLeader.setLeaderState(partition, leaderState)
+
+ val partitionData = Map(partition -> new
FetchRequest.PartitionData(Uuid.randomUuid(), 0, 0, 1048576,
Optional.of(initEpoch), Optional.of(0))).asJava
Review Comment:
Sure
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