m1a2st commented on code in PR #18592:
URL: https://github.com/apache/kafka/pull/18592#discussion_r1921073702
##########
core/src/main/scala/kafka/log/LogManager.scala:
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@@ -1080,11 +1079,7 @@ class LogManager(logDirs: Seq[File],
log
}
- // When running a ZK controller, we may get a log that does not have a
topic ID. Assign it here.
- if (log.topicId.isEmpty) {
- topicId.foreach(log.assignTopicId)
- }
-
+
Review Comment:
Although this method doesn't utilize Optional's functionality internally,
the calling method `Partition#createLogIfNotExists` uses Optional features, and
Optional is still required when passing to the `UnifiedLog` constructor later.
Therefore, I don't see a compelling reason to avoid using Optional at this
point.
https://github.com/apache/kafka/blob/78e35457ee966695bd392aa4e4c16cbfe919ad4f/core/src/main/scala/kafka/cluster/Partition.scala#L463
https://github.com/apache/kafka/blob/78e35457ee966695bd392aa4e4c16cbfe919ad4f/core/src/main/scala/kafka/log/UnifiedLog.scala#L191
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