[jira] [Updated] (KAFKA-3100) Broker.createBroker should work if json is version > 2, but still compatible

["Ismael Juma (JIRA)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/KAFKA-3100?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Ismael Juma updated KAFKA-3100:
-------------------------------
    Reviewer: Jun Rao
      Status: Patch Available  (was: Open)

> Broker.createBroker should work if json is version > 2, but still compatible
> ----------------------------------------------------------------------------
>
>                 Key: KAFKA-3100
>                 URL: https://issues.apache.org/jira/browse/KAFKA-3100
>             Project: Kafka
>          Issue Type: Improvement
>          Components: core
>    Affects Versions: 0.9.0.0
>            Reporter: Ismael Juma
>            Assignee: Ismael Juma
>             Fix For: 0.9.0.1
>
>
> Description from Jun:
> In 0.9.0.0, the old consumer reads broker info directly from ZK and the code throws an exception if the version in json is not 1 or 2. This old consumer will break when we upgrade the broker json to version 3 in ZK in 0.9.1, which will be an issue. We overlooked this issue in 0.9.0.0. The easiest fix is probably not to check the version in ZkUtils.getBrokerInfo().
> This way, as long as we are only adding new fields in broker json, we can preserve the compatibility.



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