satishd commented on a change in pull request #11390:
URL: https://github.com/apache/kafka/pull/11390#discussion_r767698400



##########
File path: core/src/main/scala/kafka/server/AbstractFetcherThread.scala
##########
@@ -715,6 +725,58 @@ abstract class AbstractFetcherThread(name: String,
     }
   }
 
+  /**
+   * Handle a partition whose offset is out of range and return a new fetch 
offset.
+   */
+  protected def fetchOffsetAndTruncate(topicPartition: TopicPartition, 
topicId: Option[Uuid], currentLeaderEpoch: Int): PartitionFetchState = {
+    fetchOffsetAndApplyFun(topicPartition, topicId, currentLeaderEpoch,
+      leaderLogStartOffset => truncateFullyAndStartAt(topicPartition, 
leaderLogStartOffset))
+  }
+
+  /**
+   * Handle a partition whose offset is moved to tiered storage and return a 
new fetch offset.
+   */
+  protected def fetchOffsetAndBuildRemoteLogAuxState(topicPartition: 
TopicPartition, topicId: Option[Uuid],
+                                                     currentLeaderEpoch: Int,
+                                                     leaderLogStartOffset: 
Long): PartitionFetchState = {
+    fetchOffsetAndApplyFun(topicPartition, topicId, currentLeaderEpoch,
+      leaderLocalLogStartOffset =>
+        buildRemoteLogAuxState(topicPartition, currentLeaderEpoch, 
leaderLocalLogStartOffset, leaderLogStartOffset))
+  }
+
+  /**
+   * Handle the offset moved to tiered storage error. Return false if
+   * 1) the request succeeded or

Review comment:
       Updated the javadoc.




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