[jira] [Created] (KAFKA-3622) Kafka throws undescriptive error message if port is missing from url

["Peter Ableda (JIRA)" <ji...@apache.org>]

Peter Ableda created KAFKA-3622:
-----------------------------------

             Summary: Kafka throws undescriptive error message if port is missing from url
                 Key: KAFKA-3622
                 URL: https://issues.apache.org/jira/browse/KAFKA-3622
             Project: Kafka
          Issue Type: Improvement
            Reporter: Peter Ableda
            Priority: Minor


When I try to set up MirrorMaker with *bootstrap.servers* missing the port numbers from the URLs the above error is thrown:
{code}
Caused by: org.apache.kafka.common.config.ConfigException: Invalid url in bootstrap.servers: host-1.com
        at org.apache.kafka.clients.ClientUtils.parseAndValidateAddresses(ClientUtils.java:44)
        at org.apache.kafka.clients.consumer.KafkaConsumer.<init>(KafkaConsumer.java:574)
        ... 12 more
{code}

This message doesn't suggest that the port number is needed in the *bootstrap.servers* configuration which causes confusion for users who try to set this up for the first time.


The above *ConfigException* message should be shown:  
{code}
Missing port in bootstrap.servers: 127.0.0.1
{code}



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