Rajini Sivaram created KAFKA-8379:
-------------------------------------

             Summary: Flaky test 
KafkaAdminClientTest.testUnreachableBootstrapServer
                 Key: KAFKA-8379
                 URL: https://issues.apache.org/jira/browse/KAFKA-8379
             Project: Kafka
          Issue Type: Bug
          Components: clients
            Reporter: Rajini Sivaram
            Assignee: Rajini Sivaram
             Fix For: 2.3.0


Test failed with:
{code:java}
org.junit.runners.model.TestTimedOutException: test timed out after 120000 
milliseconds
        at java.lang.Object.wait(Native Method)
        at java.lang.Object.wait(Object.java:502)
        at 
org.apache.kafka.common.internals.KafkaFutureImpl$SingleWaiter.await(KafkaFutureImpl.java:92)
        at 
org.apache.kafka.common.internals.KafkaFutureImpl.get(KafkaFutureImpl.java:260)
        at 
org.apache.kafka.clients.admin.KafkaAdminClientTest.testUnreachableBootstrapServer(KafkaAdminClientTest.java:303)
{code}

Standard output shows:

{code}
[2019-05-17 06:38:01,854] ERROR Uncaught exception in thread 
'kafka-admin-client-thread | adminclient-35': 
(org.apache.kafka.common.utils.KafkaThread:51)
java.lang.IllegalStateException: Cannot send ClientRequest(expectResponse=true, 
callback=null, destination=-1, correlationId=0, clientId=mockClientId, 
createdTimeMs=1558075081853, requestBuilder=MetadataRequestData(topics=[], 
allowAutoTopicCreation=true, includeClusterAuthorizedOperations=false, 
includeTopicAuthorizedOperations=false)) since the destination is not ready
        at org.apache.kafka.clients.MockClient.send(MockClient.java:186)
        at 
org.apache.kafka.clients.admin.KafkaAdminClient$AdminClientRunnable.sendEligibleCalls(KafkaAdminClient.java:943)
        at 
org.apache.kafka.clients.admin.KafkaAdminClient$AdminClientRunnable.run(KafkaAdminClient.java:1140)
        at java.lang.Thread.run(Thread.java:748)
{code}




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