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https://issues.apache.org/jira/browse/KAFKA-7303?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]
Chun Zhang resolved KAFKA-7303.
-------------------------------
Resolution: Duplicate
> Kafka client is stuck when specifying wrong brokers
> ---------------------------------------------------
>
> Key: KAFKA-7303
> URL: https://issues.apache.org/jira/browse/KAFKA-7303
> Project: Kafka
> Issue Type: Bug
> Components: consumer
> Affects Versions: 1.1.0
> Reporter: Chun Zhang
> Priority: Major
>
> {code:java}
> import java.util.Collections;
> import java.util.Properties;
> import org.apache.kafka.clients.CommonClientConfigs;
> import org.apache.kafka.clients.consumer.ConsumerConfig;
> import org.apache.kafka.clients.consumer.ConsumerRecord;
> import org.apache.kafka.clients.consumer.ConsumerRecords;
> import org.apache.kafka.clients.consumer.KafkaConsumer;
> public class KafkaBug {
> public static void main(String[] args) throws Exception {
> Properties props = new Properties();
> // intentionally use an irrelevant address
> props.put(CommonClientConfigs.BOOTSTRAP_SERVERS_CONFIG,
> "issues.apache.org:80");
> props.put(CommonClientConfigs.SECURITY_PROTOCOL_CONFIG, "PLAINTEXT");
> props.put(ConsumerConfig.GROUP_ID_CONFIG, "group_id_string");
> props.put(ConsumerConfig.KEY_DESERIALIZER_CLASS_CONFIG,
> "org.apache.kafka.common.serialization.ByteArrayDeserializer");
> props.put(ConsumerConfig.VALUE_DESERIALIZER_CLASS_CONFIG,
> "org.apache.kafka.common.serialization.ByteArrayDeserializer");
> KafkaConsumer<byte[], byte[]> consumer = new KafkaConsumer<>(props);
> consumer.subscribe(Collections.singleton("mytopic"));
> // This call will block forever.
> consumer.poll(1000);
> }
> }
> {code}
> When I run the code above, I keep getting the error log below:
> {code:java}
> DEBUG [main] (21:21:25,959) - [Consumer clientId=consumer-1,
> groupId=group_id_string] Connection with issues.apache.org/207.244.88.139
> disconnected
> java.net.ConnectException: Connection timed out
> 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:50)
> at
> org.apache.kafka.common.network.KafkaChannel.finishConnect(KafkaChannel.java:106)
> at
> org.apache.kafka.common.network.Selector.pollSelectionKeys(Selector.java:470)
> at org.apache.kafka.common.network.Selector.poll(Selector.java:424)
> at org.apache.kafka.clients.NetworkClient.poll(NetworkClient.java:460)
> at
> org.apache.kafka.clients.consumer.internals.ConsumerNetworkClient.poll(ConsumerNetworkClient.java:261)
> at
> org.apache.kafka.clients.consumer.internals.ConsumerNetworkClient.poll(ConsumerNetworkClient.java:233)
> at
> org.apache.kafka.clients.consumer.internals.ConsumerNetworkClient.poll(ConsumerNetworkClient.java:224)
> at
> org.apache.kafka.clients.consumer.internals.ConsumerNetworkClient.awaitMetadataUpdate(ConsumerNetworkClient.java:156)
> at
> org.apache.kafka.clients.consumer.internals.AbstractCoordinator.ensureCoordinatorReady(AbstractCoordinator.java:228)
> at
> org.apache.kafka.clients.consumer.internals.AbstractCoordinator.ensureCoordinatorReady(AbstractCoordinator.java:205)
> at
> org.apache.kafka.clients.consumer.internals.ConsumerCoordinator.poll(ConsumerCoordinator.java:279)
> at
> org.apache.kafka.clients.consumer.KafkaConsumer.pollOnce(KafkaConsumer.java:1149)
> at
> org.apache.kafka.clients.consumer.KafkaConsumer.poll(KafkaConsumer.java:1115)
> at com.twosigma.example.kafka.bug.KafkaBug.main(KafkaBug.java:46)
> DEBUG [main] (21:21:25,963) - [Consumer clientId=consumer-1,
> groupId=group_id_string] Node -1 disconnected.
> WARN [main] (21:21:25,963) - [Consumer clientId=consumer-1,
> groupId=group_id_string] Connection to node -1 could not be established.
> Broker may not be available.
> DEBUG [main] (21:21:25,963) - [Consumer clientId=consumer-1,
> groupId=group_id_string] Give up sending metadata request since no node is
> available
> DEBUG [main] (21:21:26,013) - [Consumer clientId=consumer-1,
> groupId=group_id_string] Give up sending metadata request since no node is
> available
> {code}
> I expect the program to fail when the wrong broker is specified.
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