[jira] [Created] (KAFKA-7808) AdminClient#describeTopic should not throw InvalidTopic if topic name is not found

[Guozhang Wang (JIRA)]

Guozhang Wang created KAFKA-7808:
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             Summary: AdminClient#describeTopic should not throw InvalidTopic 
if topic name is not found
                 Key: KAFKA-7808
                 URL: https://issues.apache.org/jira/browse/KAFKA-7808
             Project: Kafka
          Issue Type: Improvement
          Components: admin
            Reporter: Guozhang Wang


In AdminClient#describeTopic, we have the following logic:

{code}
        if (!cluster.topics().contains(topicName)) {
                        future.completeExceptionally(new 
InvalidTopicException("Topic " + topicName + " not found."));
                        continue;
                    }
{code}

However, {{InvalidTopicException}} is a non-retriable exception and is used to 
indicate that topic contains invalid chars or topic name is too long etc, and 
hence not correct to use. We should, instead, throw the retriable 
{{UnknownTopicOrPartitionException}} instead.

We should make sure any callers on this logic should be cleaned up when fixing 
it.



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