divijvaidya commented on code in PR #13719:
URL: https://github.com/apache/kafka/pull/13719#discussion_r1199008645
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core/src/main/scala/kafka/server/AbstractFetcherThread.scala:
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@@ -680,12 +680,15 @@ abstract class AbstractFetcherThread(name: String,
*/
val offsetAndEpoch = leader.fetchEarliestOffset(topicPartition,
currentLeaderEpoch)
val leaderStartOffset = offsetAndEpoch.offset
- warn(s"Reset fetch offset for partition $topicPartition from
$replicaEndOffset to current " +
- s"leader's start offset $leaderStartOffset")
val offsetToFetch = Math.max(leaderStartOffset, replicaEndOffset)
+ info(s"Reset fetch offset for partition $topicPartition from
$replicaEndOffset to " +
+ s"new fetch offset $offsetToFetch")
// Only truncate log when current leader's log start offset is greater
than follower's log end offset.
- if (leaderStartOffset > replicaEndOffset)
+ if (leaderStartOffset > replicaEndOffset) {
truncateFullyAndStartAt(topicPartition, leaderStartOffset)
+ warn(s"Truncate fully and start at leader's start offset
$leaderStartOffset for partition $topicPartition " +
Review Comment:
This log should probably be placed before the call to
truncateFullyAndStartAt. Placing the line "before" will help in debugging cases
where truncation fails for some reason. It would help us understand what code
path was being executed
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