Vladimir Porshkevich created KAFKA-5065:
-------------------------------------------

             Summary: AbstractCoordinator.ensureCoordinatorReady() stuck in 
loop if absent any bootstrap servers 
                 Key: KAFKA-5065
                 URL: https://issues.apache.org/jira/browse/KAFKA-5065
             Project: Kafka
          Issue Type: Bug
          Components: clients
    Affects Versions: 0.10.2.0, 0.10.1.1, 0.10.1.0, 0.10.0.1, 0.10.0.0
            Reporter: Vladimir Porshkevich


If Consumer started with wrong bootstrap servers or absent any valid servers, 
and Thread call Consumer.poll(timeout) with any timeout Thread stuck in loop 
with debug logs like

{noformat}
org.apache.kafka.common.network.Selector - Connection with /172.31.1.100 
disconnected
java.net.ConnectException: Connection timed out: no further information
        at sun.nio.ch.SocketChannelImpl.checkConnect(Native Method)
        at 
sun.nio.ch.SocketChannelImpl.finishConnect(SocketChannelImpl.java:717)
        at 
org.apache.kafka.common.network.PlaintextTransportLayer.finishConnect(PlaintextTransportLayer.java:51)
        at 
org.apache.kafka.common.network.KafkaChannel.finishConnect(KafkaChannel.java:81)
        at 
org.apache.kafka.common.network.Selector.pollSelectionKeys(Selector.java:335)
        at org.apache.kafka.common.network.Selector.poll(Selector.java:303)
        at org.apache.kafka.clients.NetworkClient.poll(NetworkClient.java:349)
        at 
org.apache.kafka.clients.consumer.internals.ConsumerNetworkClient.poll(ConsumerNetworkClient.java:226)
        at 
org.apache.kafka.clients.consumer.internals.ConsumerNetworkClient.poll(ConsumerNetworkClient.java:203)
        at 
org.apache.kafka.clients.consumer.internals.ConsumerNetworkClient.awaitMetadataUpdate(ConsumerNetworkClient.java:138)
        at 
org.apache.kafka.clients.consumer.internals.AbstractCoordinator.ensureCoordinatorReady(AbstractCoordinator.java:216)
        at 
org.apache.kafka.clients.consumer.internals.AbstractCoordinator.ensureCoordinatorReady(AbstractCoordinator.java:193)
        at 
org.apache.kafka.clients.consumer.internals.ConsumerCoordinator.poll(ConsumerCoordinator.java:275)
        at 
org.apache.kafka.clients.consumer.KafkaConsumer.pollOnce(KafkaConsumer.java:1030)
        at 
org.apache.kafka.clients.consumer.KafkaConsumer.poll(KafkaConsumer.java:995)
        at 
com.example.SccSpringCloudDemoApplication.main(SccSpringCloudDemoApplication.java:46)
{noformat}

Problem with AbstractCoordinator.ensureCoordinatorReady() method
It uses Long.MAX_VALUE as timeout.



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