kjaggann opened a new issue #7679:
URL: https://github.com/apache/pulsar/issues/7679


   **Describe the bug**
   We have spinned up new brokers, last week, but there is one topic it is 
still referring to the old broker which is not in the list.
   we get following error
   
   org.apache.pulsar.client.api.PulsarClientException: 
java.util.concurrent.ExecutionException: 
org.apache.pulsar.client.api.PulsarClientException: 
java.util.concurrent.CompletionException: java.net.UnknownHostException: failed 
to resolve 'i-073b64a162d0c2a1dfdadfda.ebiz.abc.com' after 8 queries 
        at 
org.apache.pulsar.client.api.PulsarClientException.unwrap(PulsarClientException.java:873)
        at 
org.apache.pulsar.client.impl.ProducerBuilderImpl.create(ProducerBuilderImpl.java:93)
        at 
com.vz.tx.vmbpulsar.mocks.PulsarMessageProducer.main(PulsarMessageProducer.java:44)
   
   
   i-073b64a162d0c2a1dfdadfda.ebiz.abc.com this is an old broker IP which not 
the part of AWS cluster
   
   
   we tried to unload the namespace but we got the following error
   
   Reason: java.util.concurrent.CompletionException: 
org.apache.pulsar.client.admin.internal.http.AsyncHttpConnector$RetryException: 
Could not complete the operation. Number of retries has been exhausted
   
   **Expected behavior**
   topic should own the new brokers
   
   
   **Desktop (please complete the following information):**
    - OS: [e.g. iOS] : Linux centOs
   Pulsar Version: 2.6.0
   topic: non-persistent topic
   
   
   


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