drawxy commented on code in PR #14553:
URL: https://github.com/apache/kafka/pull/14553#discussion_r1371202846
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core/src/main/scala/kafka/log/LogManager.scala:
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@@ -1156,6 +1156,9 @@ class LogManager(logDirs: Seq[File],
// we will add metrics back after sourceLog remove the metrics
destLog.removeLogMetrics()
destLog.updateHighWatermark(sourceLog.highWatermark)
+ sourceLog.leaderEpochCache.foreach(cache =>
+ cache.latestEntry.map(entry =>
+ destLog.maybeAssignEpochStartOffset(entry.epoch, entry.startOffset)))
Review Comment:
If not, there wouldn't be leader epoch cache for the log after altering log
dir without any produce traffic. As written in description, "The cache for each
partition is updated only when appending new messages or becoming leader. If
there is no traffic and the replica is already the leader, the cache will not
be updated any more."
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