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Posted to jira@kafka.apache.org by "Mickael Maison (Jira)" <ji...@apache.org> on 2020/11/12 18:31:00 UTC
[jira] [Updated] (KAFKA-10713) Surprising behaviour when bootstrap
servers are separated by semicolons
[ https://issues.apache.org/jira/browse/KAFKA-10713?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Mickael Maison updated KAFKA-10713:
-----------------------------------
Description:
When creating a Kafka client with bootstrap.servers set to "kafka-0:9092;kafka-1:9092;kafka-2:9092", it has a strange behaviour.
For once, there's no warning or error messages. The client will connect and start working. However, it will only use the hostname after the last semicolon! In this example, it will only have kafka-2 as bootstrap server
assertEquals("kafka-2", getHost("kafka-1:1234;kafka-1:1234;kafka-2:1234"));
I believe semicolon are not valid characters in hostname/domain names, so we should be able to provide better validation.
was:
When creating a Kafka client with bootstrap.servers set to "kafka-0:9092;kafka-1:9092;kafka-2:9092", it has a strange behaviour.
For once, there's no warning or error messages. The client will connect and start working. However, it will only use the hostname after the last semicolon! kafka-2 in this example!
assertEquals("kafka-2", getHost("kafka-1:1234;kafka-1:1234;kafka-2:1234"));
I believe semicolon are not valid characters in hostname/domain names, so we should be able to provide better validation.
> Surprising behaviour when bootstrap servers are separated by semicolons
> -----------------------------------------------------------------------
>
> Key: KAFKA-10713
> URL: https://issues.apache.org/jira/browse/KAFKA-10713
> Project: Kafka
> Issue Type: Improvement
> Reporter: Mickael Maison
> Priority: Major
>
> When creating a Kafka client with bootstrap.servers set to "kafka-0:9092;kafka-1:9092;kafka-2:9092", it has a strange behaviour.
> For once, there's no warning or error messages. The client will connect and start working. However, it will only use the hostname after the last semicolon! In this example, it will only have kafka-2 as bootstrap server
> assertEquals("kafka-2", getHost("kafka-1:1234;kafka-1:1234;kafka-2:1234"));
> I believe semicolon are not valid characters in hostname/domain names, so we should be able to provide better validation.
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