[GitHub] [kafka] rajinisivaram commented on a change in pull request #9382: KAFKA-10554; Perform follower truncation based on diverging epochs in Fetch response

[GitBox]

rajinisivaram commented on a change in pull request #9382:
URL: https://github.com/apache/kafka/pull/9382#discussion_r511047510



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File path: core/src/main/scala/kafka/server/AbstractFetcherThread.scala
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@@ -629,7 +680,9 @@ abstract class AbstractFetcherThread(name: String,
 
       val initialLag = leaderEndOffset - offsetToFetch
       fetcherLagStats.getAndMaybePut(topicPartition).lag = initialLag
-      PartitionFetchState(offsetToFetch, Some(initialLag), currentLeaderEpoch, 
state = Fetching)
+      // We don't expect diverging epochs from the next fetch request, so 
resetting `lastFetchedEpoch`

Review comment:
       Updated




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