Lianet Magrans created KAFKA-18619:
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             Summary: New consumer topic metadata events should set 
requireMetadata flag
                 Key: KAFKA-18619
                 URL: https://issues.apache.org/jira/browse/KAFKA-18619
             Project: Kafka
          Issue Type: Bug
          Components: consumer
            Reporter: Lianet Magrans
             Fix For: 4.0.0


In the new asyn consumer, application events that require topic metadata should 
overwrite the requireSubscriptionMetadata func defined in the 
CompletableApplicationEvent class (returning false by default). This ensures 
that api calls that trigger those events receive metadata errors that may be 
discovered in the network layer.

We should ensure that AbstractTopicMetadataEvent sets this to true, so that 
topic metadata calls like partitionsFor are aware of metadata errors.



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