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Posted to dev@kafka.apache.org by "Manikumar (JIRA)" <ji...@apache.org> on 2017/09/08 17:24:00 UTC

[jira] [Resolved] (KAFKA-2392) Kafka Server does not accept 0 as a port

     [ https://issues.apache.org/jira/browse/KAFKA-2392?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Manikumar resolved KAFKA-2392.
------------------------------
    Resolution: Fixed

Kafka supports port 0 for unit tests. As mentioned in the previous comment,  Curator's TestingServer to run an in-memory Zookeeper,

> Kafka Server does not accept 0 as a port
> ----------------------------------------
>
>                 Key: KAFKA-2392
>                 URL: https://issues.apache.org/jira/browse/KAFKA-2392
>             Project: Kafka
>          Issue Type: Bug
>          Components: config
>    Affects Versions: 0.8.2.1
>            Reporter: Buğra Gedik
>            Priority: Minor
>
> I want to specify 0 as a port number for Zookeeper as well as Kafka Server. For instance server.properties configuration file has a 'port' property, but does not accept 0 as a value. Similarly, zookeeper.properties has a 'clientPort' property, but does not accept 0 as a value.
> I want 0 to specify that the port will be selected automatically (OS assigned). In my use case, I want to run Zookeeper with an automatically picked port, and use that port to create a Kafka Server configuration file, that specifies the Kafka Server port as 0 as well. I parse the output from the servers to figure out the actual ports used. All this is needed for a testing environment.
> Not supporting automatically selected ports makes it difficult to run Kafka server as part of our tests.



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