showuon commented on code in PR #14352:
URL: https://github.com/apache/kafka/pull/14352#discussion_r1318426217


##########
storage/api/src/main/java/org/apache/kafka/server/log/remote/storage/RemoteStorageManager.java:
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@@ -121,14 +121,17 @@ InputStream fetchLogSegment(RemoteLogSegmentMetadata 
remoteLogSegmentMetadata,
 
     /**
      * Returns the index for the respective log segment of {@link 
RemoteLogSegmentMetadata}.
+     * <p>
+     * Note: The transaction index may not exist because segments created 
prior to version 2.8.0 or non-transactional topics...etc.
+     * In this case, it should still return an InputStream with empty content, 
instead of returning {@code null}.

Review Comment:
   Changed to `The transaction index may not exist because of non-transactional 
topics.`. Thanks.



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