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Posted to dev@kafka.apache.org by "Randall Hauch (Jira)" <ji...@apache.org> on 2019/12/05 02:02:00 UTC

[jira] [Resolved] (KAFKA-9184) Redundant task creation and periodic rebalances after zombie worker rejoins the group

     [ https://issues.apache.org/jira/browse/KAFKA-9184?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Randall Hauch resolved KAFKA-9184.
----------------------------------
      Reviewer: Randall Hauch
    Resolution: Fixed

> Redundant task creation and periodic rebalances after zombie worker rejoins the group
> -------------------------------------------------------------------------------------
>
>                 Key: KAFKA-9184
>                 URL: https://issues.apache.org/jira/browse/KAFKA-9184
>             Project: Kafka
>          Issue Type: Bug
>          Components: KafkaConnect
>    Affects Versions: 2.4.0, 2.3.2
>            Reporter: Konstantine Karantasis
>            Assignee: Konstantine Karantasis
>            Priority: Blocker
>             Fix For: 2.4.0, 2.5.0, 2.3.2
>
>
> First reported here: 
> https://stackoverflow.com/questions/58631092/kafka-connect-assigns-same-task-to-multiple-workers
> There seems to be an issue with task reassignment when a worker rejoins after an unsuccessful join request. The worker seems to be outside the group for a generation but when it joins again the same task is running in more than one worker



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