nikramakrishnan commented on code in PR #14212:
URL: https://github.com/apache/kafka/pull/14212#discussion_r1296157690
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core/src/test/scala/unit/kafka/server/ReplicaFetcherTierStateMachineTest.scala:
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@@ -85,6 +85,73 @@ class ReplicaFetcherTierStateMachineTest {
assertEquals(9L, replicaState.logEndOffset)
}
+ /**
+ * This test verifies the following scenario:
+ * 1. Leader is archiving to tiered storage and has a follower.
+ * 2. Follower has caught up to offset X (exclusive).
+ * 3. While follower is offline, leader moves X to tiered storage and
expires data locally till Y, such that,
+ * `Y = leaderLocalLogStartOffset` and `leaderLocalLogStartOffset > X`.
Meanwhile, X has been expired from
+ * tiered storage as well. Hence, `X < globalLogStartOffset`.
+ * 4. Follower comes online and tries to fetch X from leader.
+ */
+ @Test
+ def testFollowerFetchMovedToAndDeletedFromTieredStore(): Unit = {
Review Comment:
Renamed it, thanks for the suggestion.
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