Repository: apache/kafka
File: core/src/test/scala/unit/kafka/server/ReplicaManagerTest.scala (Scala)

Code before:
    when(cache.getAliveBrokerNodes(any[ListenerName])).thenReturn(aliveBrokers.asJava)
  }

  @Test
  def testMaybeAddLogDirFetchers(): Unit = {
    val dir1 = TestUtils.tempDir()
    val dir2 = TestUtils.tempDir()
    val props = TestUtils.createBrokerConfig(0)
    props.put("log.dirs", dir1.getAbsolutePath + "," + dir2.getAbsolutePath)
    val config = KafkaConfig.fromProps(props)
    val logManager = TestUtils.createLogManager(config.logDirs.asScala.map(new File(_)), new LogConfig(new Properties()))
    mockGetAliveBrokerFunctions(metadataCache, Seq(new Node(0, "host0", 0)))
    when(metadataCache.metadataVersion()).thenReturn(MetadataVersion.MINIMUM_VERSION)
    val rm = new ReplicaManager(
      metrics = metrics,
      config = config,
      time = time,
      scheduler = new MockScheduler(time),
      logManager = logManager,
      quotaManagers = quotaManager,
      metadataCache = metadataCache,
      logDirFailureChannel = new LogDirFailureChannel(config.logDirs.size),
      alterPartitionManager = alterPartitionManager)

    try {
      val delta = topicsCreateDelta(0, isStartIdLeader = true, partitions = List(0), topicName = topic, topicId =  topicIds(topic))
      val image = imageFromTopics(delta.apply())
      rm.applyDelta(delta, image)
      val partition = rm.getPartitionOrException(topicPartition)

      appendRecords(rm, topicPartition,
        MemoryRecords.withRecords(Compression.NONE, new SimpleRecord("first message".getBytes()), new SimpleRecord("second message".getBytes())))
      logManager.maybeUpdatePreferredLogDir(topicPartition, dir2.getAbsolutePath)

      partition.createLogIfNotExists(isNew = true, isFutureReplica = true,
        new LazyOffsetCheckpoints(rm.highWatermarkCheckpoints.asJava), None)

      // this method should use hw of future log to create log dir fetcher. Otherwise, it causes offset mismatch error
      rm.maybeAddLogDirFetchers(Set(partition), new LazyOffsetCheckpoints(rm.highWatermarkCheckpoints.asJava), _ => None)
      rm.replicaAlterLogDirsManager.fetcherThreadMap.values.foreach(t => t.fetchState(topicPartition).foreach(s => assertEquals(0L, s.fetchOffset)))
      // make sure alter log dir thread has processed the data
      rm.replicaAlterLogDirsManager.fetcherThreadMap.values.foreach(t => t.doWork())
      assertEquals(Set.empty, rm.replicaAlterLogDirsManager.failedPartitions.partitions())
      // the future log becomes the current log, so the partition state should get removed
      rm.replicaAlterLogDirsManager.fetcherThreadMap.values.foreach(t => assertEquals(None, t.fetchState(topicPartition)))
    } finally {
      rm.shutdown(checkpointHW = false)
    }
  }

  @ParameterizedTest(name = "testMaybeAddLogDirFetchersPausingCleaning with futureLogCreated: {0}")

Review comment (suggestion):
```suggestion
      val delta = topicsCreateDelta(0, isStartIdLeader = true, partitions = List(0), topicName = topic, topicId = topicIds(topic))
```

Code after:
    when(cache.getAliveBrokerNodes(any[ListenerName])).thenReturn(aliveBrokers.asJava)
  }

  @Test
  def testMaybeAddLogDirFetchers(): Unit = {
    val dir1 = TestUtils.tempDir()
    val dir2 = TestUtils.tempDir()
    val props = TestUtils.createBrokerConfig(0)
    props.put("log.dirs", dir1.getAbsolutePath + "," + dir2.getAbsolutePath)
    val config = KafkaConfig.fromProps(props)
    val logManager = TestUtils.createLogManager(config.logDirs.asScala.map(new File(_)), new LogConfig(new Properties()))
    mockGetAliveBrokerFunctions(metadataCache, Seq(new Node(0, "host0", 0)))
    when(metadataCache.metadataVersion()).thenReturn(MetadataVersion.MINIMUM_VERSION)
    val rm = new ReplicaManager(
      metrics = metrics,
      config = config,
      time = time,
      scheduler = new MockScheduler(time),
      logManager = logManager,
      quotaManagers = quotaManager,
      metadataCache = metadataCache,
      logDirFailureChannel = new LogDirFailureChannel(config.logDirs.size),
      alterPartitionManager = alterPartitionManager)

    try {
      val delta = topicsCreateDelta(0, isStartIdLeader = true, partitions = List(0), topicName = topic, topicId = topicIds(topic))
      val image = imageFromTopics(delta.apply())
      rm.applyDelta(delta, image)
      val partition = rm.getPartitionOrException(topicPartition)

      appendRecords(rm, topicPartition,
        MemoryRecords.withRecords(Compression.NONE, new SimpleRecord("first message".getBytes()), new SimpleRecord("second message".getBytes())))
      logManager.maybeUpdatePreferredLogDir(topicPartition, dir2.getAbsolutePath)

      partition.createLogIfNotExists(isNew = true, isFutureReplica = true,
        new LazyOffsetCheckpoints(rm.highWatermarkCheckpoints.asJava), None)

      // this method should use hw of future log to create log dir fetcher. Otherwise, it causes offset mismatch error
      rm.maybeAddLogDirFetchers(Set(partition), new LazyOffsetCheckpoints(rm.highWatermarkCheckpoints.asJava), _ => None)
      rm.replicaAlterLogDirsManager.fetcherThreadMap.values.foreach(t => t.fetchState(topicPartition).foreach(s => assertEquals(0L, s.fetchOffset)))
      // make sure alter log dir thread has processed the data
      rm.replicaAlterLogDirsManager.fetcherThreadMap.values.foreach(t => t.doWork())
      assertEquals(Set.empty, rm.replicaAlterLogDirsManager.failedPartitions.partitions())
      // the future log becomes the current log, so the partition state should get removed
      rm.replicaAlterLogDirsManager.fetcherThreadMap.values.foreach(t => assertEquals(None, t.fetchState(topicPartition)))
    } finally {
      rm.shutdown(checkpointHW = false)
    }
  }

  @ParameterizedTest(name = "testMaybeAddLogDirFetchersPausingCleaning with futureLogCreated: {0}")