lmr3796 commented on a change in pull request #9435:
URL: https://github.com/apache/kafka/pull/9435#discussion_r533153634
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File path: core/src/main/scala/kafka/server/KafkaApis.scala
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@@ -1250,13 +1251,23 @@ class KafkaApis(val requestChannel: RequestChannel,
metadataResponseTopic(Errors.INVALID_REPLICATION_FACTOR, topic,
true, util.Collections.emptyList())
else
topicMetadata
- } else if (allowAutoTopicCreation && config.autoCreateTopicsEnable) {
+ } else if (!isFetchAllMetadata && allowAutoTopicCreation &&
config.autoCreateTopicsEnable) {
+ // KAFKA-10606: If this request is to get metadata for all topics,
auto topic creation should not be allowed
+ // The special handling is necessary on broker side because
allowAutoTopicCreation is hard coded to true
+ // for backward compatibility on client side.
createTopic(topic, config.numPartitions,
config.defaultReplicationFactor)
} else {
metadataResponseTopic(Errors.UNKNOWN_TOPIC_OR_PARTITION, topic,
false, util.Collections.emptyList())
Review comment:
@ijuma I slightly changed it (and rebased latest) so the processing is a
branch in the middle about `isFetchAllMetadata`.
It's still a `map` and `filter` structure because I don't want to sacrifice
the readability, but it's handled in the middle instead of at the returning
statement, which I think is more elegant and readable than the original version.
Let me know what you think!
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