chia7712 commented on code in PR #15951:
URL: https://github.com/apache/kafka/pull/15951#discussion_r1608320628
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core/src/main/scala/kafka/server/ReplicaManager.scala:
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@@ -2114,16 +2114,12 @@ class ReplicaManager(val config: KafkaConfig,
partition.log.foreach { _ =>
val leader = BrokerEndPoint(config.brokerId, "localhost", -1)
- // Add future replica log to partition's map
- partition.createLogIfNotExists(
- isNew = false,
- isFutureReplica = true,
- offsetCheckpoints,
- topicIds(partition.topic))
-
- // pause cleaning for partitions that are being moved and start
ReplicaAlterDirThread to move
- // replica from source dir to destination dir
- logManager.abortAndPauseCleaning(topicPartition)
+ // Add future replica log to partition's map if it's not existed
Review Comment:
If `maybeCreateFutureReplica` return false, we assume another thread already
add the future log to partition and invoke alter thread. Hence, we don't need
to abort cleaning since another thread does it.
However, adding alter thread
(`replicaAlterLogDirsManager.addFetcherForPartitions(futureReplicasAndInitialOffset)`)
is not in this check. Is it possible that alter thread, which is invoked by
another thread, just remove the future log and then this thread add the topic
partition to `replicaAlterLogDirsManager`? It seems to me that alter thread
will get fail as future log of partition is gone.
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