[jira] [Updated] (KAFKA-3829) Warn that kafka-connect group.id must not conflict with connector names

["Ewen Cheslack-Postava (JIRA)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/KAFKA-3829?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Ewen Cheslack-Postava updated KAFKA-3829:
-----------------------------------------
         Priority: Critical  (was: Minor)
    Fix Version/s: 0.10.1.0
          Summary: Warn that kafka-connect group.id must not conflict with connector names  (was: Warn that kafka-connect group.id must not conflice with connector names)

Bumping the importance of this and marking for 0.10.1.0. It's not critical for an 0.10.0.1, but it's pretty bad if there is no indication that there is a conflict, especially when it is obvious to the connect worker that there *will* be a conflict since the worker knows both group names. Any sort of warning & bailing upon conflict would be better than silently ignoring and then failing the way we currently do.

> Warn that kafka-connect group.id must not conflict with connector names
> -----------------------------------------------------------------------
>
>                 Key: KAFKA-3829
>                 URL: https://issues.apache.org/jira/browse/KAFKA-3829
>             Project: Kafka
>          Issue Type: Improvement
>          Components: KafkaConnect
>    Affects Versions: 0.9.0.1
>            Reporter: Barry Kaplan
>            Assignee: Ewen Cheslack-Postava
>            Priority: Critical
>              Labels: documentation
>             Fix For: 0.10.1.0
>
>
> If the group.id value happens to have the same value as a connector names the following error will be issued:
> {quote}
> Attempt to join group connect-elasticsearch-indexer failed due to: The group member's supported protocols are incompatible with those of existing members.
> {quote}
> Maybe the documentation for Distributed Worker Configuration group.id could be worded:
> {quote}
> A unique string that identifies the Connect cluster group this worker belongs to. This value must be different than all connector configuration 'name' properties.
> {quote}



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