[jira] [Assigned] (KAFKA-9216) Enforce connect internal topic configuration at startup

["Randall Hauch (Jira)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/KAFKA-9216?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Randall Hauch reassigned KAFKA-9216:
------------------------------------

    Assignee: Randall Hauch

> Enforce connect internal topic configuration at startup
> -------------------------------------------------------
>
>                 Key: KAFKA-9216
>                 URL: https://issues.apache.org/jira/browse/KAFKA-9216
>             Project: Kafka
>          Issue Type: Improvement
>          Components: KafkaConnect
>    Affects Versions: 0.11.0.0
>            Reporter: Randall Hauch
>            Assignee: Randall Hauch
>            Priority: Major
>
> Users sometimes configure Connect's internal topic for configurations with more than one partition. One partition is expected, however, and using more than one leads to weird behavior that is sometimes not easy to spot.
> Here's one example of a log message:
> {noformat}
> "textPayload": "[2019-11-20 11:12:14,049] INFO [Worker clientId=connect-1, groupId=td-connect-server] Current config state offset 284 does not match group assignment 274. Forcing rebalance. (org.apache.kafka.connect.runtime.distributed.DistributedHerder:942)\n"
> {noformat}
> Would it be possible to add a check in the KafkaConfigBackingStore and prevent the worker from starting if connect config partition count !=1 ?



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