showuon commented on code in PR #12783:
URL: https://github.com/apache/kafka/pull/12783#discussion_r1013697955
##########
core/src/test/scala/unit/kafka/server/ReplicaFetcherThreadTest.scala:
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@@ -1100,6 +1102,66 @@ class ReplicaFetcherThreadTest {
assertEquals(Collections.singletonList(tid1p0),
fetchRequestBuilder2.removed())
}
+ @ParameterizedTest
+ @ValueSource(booleans = Array(true, false))
+ def testLocalFetchCompletionIfHighWatermarkUpdated(highWatermarkUpdated:
Boolean): Unit = {
+ val props = TestUtils.createBrokerConfig(1, "localhost:1234")
+ val config = KafkaConfig.fromProps(props)
+ val highWatermarkReceivedFromLeader = 100L
+
+ val mockBlockingSend: BlockingSend = mock(classOf[BlockingSend])
+ when(mockBlockingSend.brokerEndPoint()).thenReturn(brokerEndPoint)
+
+ var maybeNewHighWatermark: Option[Long] = None
+ if (highWatermarkUpdated) {
+ maybeNewHighWatermark = Some(highWatermarkReceivedFromLeader)
+ }
+ val log: UnifiedLog = mock(classOf[UnifiedLog])
+ when(log.maybeUpdateHighWatermark(highWatermarkReceivedFromLeader))
+ .thenReturn(maybeNewHighWatermark)
+
+ val appendInfo: Option[LogAppendInfo] = Some(mock(classOf[LogAppendInfo]))
+
+ val partition: Partition = mock(classOf[Partition])
+ when(partition.localLogOrException).thenReturn(log)
+ when(partition.appendRecordsToFollowerOrFutureReplica(any[MemoryRecords],
any[Boolean])).thenReturn(appendInfo)
+
+ val replicaManager: ReplicaManager = mock(classOf[ReplicaManager])
+
when(replicaManager.getPartitionOrException(any[TopicPartition])).thenReturn(partition)
+ val brokerTopicStats = new BrokerTopicStats
+ when(replicaManager.brokerTopicStats).thenReturn(brokerTopicStats)
+
+ val replicaQuota: ReplicaQuota = mock(classOf[ReplicaQuota])
+
+ val thread = createReplicaFetcherThread(
+ name = "replica-fetcher",
+ fetcherId = 0,
+ brokerConfig = config,
+ failedPartitions = failedPartitions,
+ replicaMgr = replicaManager,
+ quota = replicaQuota,
+ leaderEndpointBlockingSend = mockBlockingSend)
+
+ val tp0 = new TopicPartition("testTopic", 0)
+ val tp1 = new TopicPartition("testTopic", 1)
+ val records = MemoryRecords.withRecords(CompressionType.NONE,
+ new SimpleRecord(1000, "foo".getBytes(StandardCharsets.UTF_8)))
+ val partitionData = new FetchResponseData.PartitionData()
+ .setRecords(records)
+ .setHighWatermark(highWatermarkReceivedFromLeader)
+
+ thread.processPartitionData(tp0, 0, partitionData.setPartitionIndex(0))
+ thread.processPartitionData(tp1, 0, partitionData.setPartitionIndex(1))
+ thread.doWork()
+
+ if (highWatermarkUpdated) {
+ verify(replicaManager, times(1)).completeDelayedFetchRequests(Seq(tp0,
tp1))
Review Comment:
nit: Could we verify `completeDelayedFetchRequets` is not called before
invoking `doWork` ?
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