I have Event Hub Namespace with two Event Hubs (event-hub and event-hub-2). To establish connection I use Kafka - of course namespace is with Standard Tier. When I try to connect to the second EH (event-hub-2 as a Kafka Topic, Connection String as a Kafka Password) I got following stacktrace:
2021-06-17T15:56:04.976Z - WARN: [NetworkClient] [Consumer clientId=consumer-$Default-1, groupId=$Default] Error while fetching metadata with correlation id 11 : {event-hub=TOPIC_AUTHORIZATION_FAILED}
2021-06-17T15:56:04.980Z - ERROR: [Metadata] [Consumer clientId=consumer-$Default-1, groupId=$Default] Topic authorization failed for topics [event-hub]
2021-06-17T15:56:05.007Z - ERROR: [KafkaConsumerActor] [9e1ad] Exception when polling from consumer, stopping actor: org.apache.kafka.common.errors.TopicAuthorizationException: Not authorized to access topics: [event-hub]
org.apache.kafka.common.errors.TopicAuthorizationException: Not authorized to access topics: [event-hub]
My question is: WHY I could got this kind of stacktrace when I didn't even try to connect to topic/EH from stacktrace? It's a weird...
If you are using the same consumer group in both scenarios, your consumer needs read access to all topics used in the consumer group, try changing the group.id and test again.