showuon commented on code in PR #15263:
URL: https://github.com/apache/kafka/pull/15263#discussion_r1467584667
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core/src/main/scala/kafka/cluster/Partition.scala:
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@@ -874,7 +874,13 @@ class Partition(val topicPartition: TopicPartition,
private def createLogInAssignedDirectoryId(partitionState:
LeaderAndIsrPartitionState, highWatermarkCheckpoints: OffsetCheckpoints,
topicId: Option[Uuid], targetLogDirectoryId: Option[Uuid]): Unit = {
targetLogDirectoryId match {
case Some(directoryId) =>
- createLogIfNotExists(directoryId == DirectoryId.UNASSIGNED,
isFutureReplica = false, highWatermarkCheckpoints, topicId,
targetLogDirectoryId)
+ if (logManager.onlineLogDirId(directoryId) ||
!logManager.hasOfflineLogDirs() || directoryId == DirectoryId.UNASSIGNED) {
+ createLogIfNotExists(partitionState.isNew, isFutureReplica = false,
highWatermarkCheckpoints, topicId, targetLogDirectoryId)
+ } else {
+ warn(s"Skipping creation of log because there are potentially
offline log " +
Review Comment:
TBH, I don't understand why we should throw exception
[here](https://github.com/apache/kafka/blob/f1924353126fdf6aad2ba1f8d0c22dade59360b1/core/src/main/scala/kafka/log/LogManager.scala#L1009).
Is it because there are potentially offline log dir might already have the
logs? If so, does that mean we can't create any new topic while 1 log dir goes
offline? Sorry, I'm not quite familiar with this part of logic.
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