[GitHub] [kafka] hachikuji commented on a change in pull request #8579: KAFKA-9930: Prevent ReplicaFetcherThread from throwing UnknownTopicOrPartitionException upon topic creation and deletion.

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hachikuji commented on a change in pull request #8579:
URL: https://github.com/apache/kafka/pull/8579#discussion_r436406760



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File path: core/src/main/scala/kafka/server/AbstractFetcherThread.scala
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@@ -382,6 +382,11 @@ abstract class AbstractFetcherThread(name: String,
                     "that the partition is being moved")
                   partitionsWithError += topicPartition
 
+                case Errors.UNKNOWN_TOPIC_OR_PARTITION =>
+                  warn(s"Remote broker does not host the partition $topicPartition, which could indicate " +
+                    "that the partition is being created or deleted.")

Review comment:
       I don't have a strong opinion on this one. I guess we would most likely see this in startup cases where the remote broker may not have gotten the full metadata yet. If we fixed that common case, then I think there would be a strong case to change this to warn. Otherwise, we'd just learn to ignore them in spite of the higher level.




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